Timstar

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

These low cost batteries have 2 year shelf life and are suitable for low drain applications.

Apparatus for measuring rates of absorption or evolution of gases from organisms. Comprises two stoppered boiling tubes with wire baskets to support organisms. Each boiling tube is connected to simple manometer tube via three-way tap. The manometer tube is mounted on scale to measure the position and movement of the liquid level as gas is evolved or absorbed. The organism of interest is placed in the basket of one of the tubes, which also has some potassium hydroxide solution to absorb carbon dioxide. The other tube acts as thermobarometer, to counteract changes in temperature. Full instructions are included.

Spare Wire Baskets for BI180500

Explore the primary, secondary and tertiary structure of proteins with the captivating models and tools in this dynamic kit. This engaging, hands-on protein folding kit makes teaching protein structure basics easy. Students will fold a protein while exploring how the chemical properties of amino acids determine its final structure. Students can use the Amino Acid Starter Kit© to: •Learn that the 20 amino acids all share a common backbone but have different side chains, each with different chemical properties. •Identify the chemical properties of the side chains through a dual colouring scheme guided by the kit’s chemical properties circle, amino acid side chain list and coloured plastic clips. •Group the side chains into one of 5 categories: hydrophobic (nonpolar), hydrophilic (polar), negatively charged, positively charged, and cysteines, which sometimes form disulphide bonds. The coloured clip at the base of each side chain indicates chemical properties while embedded coloured balls in the amino acid side chain model show atomic structure. •Employ the kit’s protein-folding activities to first explore the primary and tertiary structure of proteins by constructing a generic 15-amino acid protein, then learn about the secondary structure of proteins by folding a toober model of the first of 3 zinc fingers of the Zif268 protein. Each 1-group set includes 1 chemical properties circle, 1 amino acid side chain chart, 22 amino acids, 1 mini toober, 22 coloured plastic clips and 6 hydrogen bond connectors.

These versatile modelling Toobers provide hands-on learning experiences in biology and chemistry. Students can model DNA or create protein structures and explore basic protein-folding principles. Toobers are flexible foam rods which have soft wire core that allows them to hold their shape well and they can be simply straightened out afterwards and re-used. Length: 120 cm long. Please note that theses are sold individually and the push pins are not included. See also 'Amino Acid Starter Kit' (MO110150). Also useful for teaching: • How hydrophilic/hydrophobic side-chains influence protein's structure • How structure is critical factor in many protein's function

This life size 2 part human brain is a median section model. The right hemisphere has the cerebellum and the stem with occipital lobe. On base. Numbered with English Key Card. Dimensions 190 x 150 x 150mm (D x W x H).

This 5-part classic brain model is an original anatomic cast of real human brain and comes divided along the midsagittal plane. The components of the brain's left half are: • Frontal and parietal lobe • Temporal and occipital lobe • Encephalic trunk • Cerebellum With integral magnets for easy viewing and hands on learning, the classic brain is great education tool for teaching and learning about the human nervous system and anatomy of the brain. The model comes complete with removable base for mounting and display purposes.

Students will immediately become engaged with this interactive foam model of double-stranded DNA and single-stranded RNA. The DNA Starter Kit© is schematic model that transforms from the familiar ladder shape to the double helix with twist. Students can explore the structure of colour-coded DNA bases showing purines and pyrimidines which connect to continuous sugar-phosphate backbone. Then they can delve into replication and transcription. Using individual nucleotide triphosphates, they can synthesize new strand of DNA one base at time showing the semi-conservative replication of DNA. Finally they can synthesize mRNA one base at time to show the process of transcription. Each kit includes: 51 bases (12 red adenine, 12 yellow thymine, 12 blue cytosine, 12 green guanine, 3 white uracil), 4 continuous grey backbones, 24 grey sugar-phosphates, 12 lavender sugar-phosphates and 48 orange phosphates.

The sky is the limit to what you can teach using these new large-scale, colour-coded foam nucleotides. Begin by teaching the complementary A-T and C-G base pairs and the antiparallel nature of double-stranded DNA. Move on to the flow of genetic information as you teach the basic processes of semiconservative DNA replication and mRNA transcription. You can then stretch students by introducing PCR (polymerase chain reaction) and the Sanger DNA sequencing method -- and much more. 80 Large-Scale Nucleotides: • 20 Red Adenosine • 20 Yellow Thymine • 20 Blue Cytosine • 20 Green Guanine 80 Adhesive-Backed Round Magnets

The model shows DNA and transcription of RNA. Height approx 500 mm. Complete with stand, instructions and model description.

Comprising abstract shaped colour coded parts to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate parts required to make the Double Helix model of DNA. The model can be displayed on its stand or untwisted into either flat or ladder form. The kits are designed so that only complimentary bases can be joined together. Scale 10 mm 2 Angstroms, 12 layer. The kit comes with stand and full instructions.

Comprising abstract shaped colour coded parts to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate parts required to make the Double Helix model of DNA. The model can be displayed on its stand or untwisted into either flat or ladder form. The kits are designed so that only complimentary bases can be joined together. Scale 10 mm 2 Angstroms, 22 layer. The kit comes with stand and full instructions.

Human ear, enlarged approx. 4 times and dissected into 5 parts, showing external, middle and internal portion. Ossicles and labyrinth can be taken out. Mounted on base, numbered and with Key Card. Dimensions 370 x 240 x 190mm (L x W x D).

Colourful representation of the outer, inner and middle ear including: removable eardrum with hammer and anvil, 2-part labyrinth with stirrup, cochlea and auditory/balance nerve. Comes with base and photocopiable key to parts in 4 languages.

Classic model of the human eye with highly accurate and detailed colourful components. Dissects into 6 parts: a two-part sclera with cornea and eye muscle attachments, both halves of the choroid with iris and retina, lens and vitreous humour. Comes with detachable base and photocopiable key to parts in 4 languages. Dimensions 205 x 130 x 150 mm.

This innovative functional eye model is an open design model, offering high visibility, which does not involve the injection of liquid*! It is composed of a flexible lens with an adjustable focal length, which constitutes the crystalline lens for comprehensive visualisation. The adjustment of the crystalline lens is made by mechanical stress on the flexible lens, which is similar to the action of the ciliary muscles. The screen represents the retina that can slide along the optical axis to simulate vision problems (myopia, hyperopia). The lens holder is placed in front of the eye to allow corrective lens to be put in place. The crystalline lens is equipped with an adjustable focal, without the need for further injection of liquid*, which enables the study of vision problems and their correction. Contents: eye model and kit of corrective lenses. *a one-time injection of liquid is required when setting up the apparatus for the first time only.

Clearly demonstrates how the heart pumps blood around the body. Comes with complete instructions. Assembly required. Size approximately 280 x 220 mm.

Highly detailed 2-part human heart model. The front heart wall is detachable to reveal the chambers and valves inside the human heart. The classic heart model just slightly smaller than life-size with exquisite anatomical detail throughout. Great model of the anatomy of the human heart. Stand included with this high quality heart.

Human heart 3 times life size. Model is cut by vertical line towards level of ventricular septum and separates into parts after the arch of aorta and superior venacava have been removed. Both atria and ventricles with bicuspid and tricuspid semilunar valves as well as sigmoid valves can be seen. Separates into 7 parts. On base. 23 structures are numbered with an English key card. Dimensions 280 x 230 x 330mm (L x W x H).

Natural size, front heart is removable to view the chambers. Mounted on base. Numbered with English Key Card. Dimensions 140 x 140 x 200mm (L x W x H).

This model shows the Kidney with an adrenal gland as well as renal and adrenal vessels and the upper portion of the ureter. removable front half of the kidney to show cortex medulla and vessels as well as renal pelvis. Mounted on base. Numbered with English Key Card. Dimensions 120 x 120 x 280mm (L x W x H).

Large, detailed model of flower, with the pistil and anthers shown in section to show the egg and pollen inside their cases. Dimensions: 220 x 330 mm.

Proteins become real in your students' hands with this as they fold Mini-Toober ß-Globin fragments and discover the primary, secondary and tertiary structure in this model. Maps guide your students in folding the Mini-Toobers into ß-Globin's 3-D shape. This Kit is the next step in helping your students understand proteins, after engaging in the Amino Acid Starter Kit© activities. The Mini-Toober ß-Globin Folding Kit© includes Mini-Toobers, folding map guides, amino acid side-chains, haeme group, iron atom, oxygen atoms, and an assortment of parts to mark and connect the fragments. The Folding Kit can be used successfully by to students working in teams. Available as kit for self-construction, or ready-made, pre-folded model.

Half scale model of the human skeleton. Produced in lightweight and durable synthetic material. All of the main joints move including the shoulder, elbow, wrist, hip, knee, jaw and ankle. Comes with metal stand and photocopiable key to parts in 4 languages. Size 850 mm.

Human Skeleton Model-Life size model of human skeleton with stand, made of plastic material, finished in natural colour with plastic cover. Mounted on base. Numbered with English Key Card. Dimensions (Height): 1.7 m.

Compact desktop model skeleton on a sturdy stand. Size 460 mm.

This high-quality robust skeleton stand can be used to hold almost any skeleton model, and allows it to be transported easily from room-to-room over variety of surfaces. The base is made from cast iron and is very heavy to prevent tipping. The six heavy-duty castors have brakes. A set screw holds the skeleton rod in place. The inner diameter is 12.5 mm. It measures 52 x 52 x 95 cm approx. with weight of 17.4 kg.

The hook accessory can be used to hang a life-sized skeleton using the base, SK180000. It is 117 cm long, 12.5 mm in diameter, with hook that is approx. 20 cm.

Half sized, 11 piece dissectable anatomical torso, consisting of realistically coloured and detailed body parts in the correct proportion and location. Comes complete with a photocopiable key to parts, ideal for pupils to learn about the major organs and the physical relationship between them.

This hand painted torso model consists of 13 parts. The following parts are removable: eye with optical nerve, half brain, lung (2 parts), heart (2 parts), liver, stomach, front portion of the kidney, half of the bladder, large and small intestines, with appendix flap opening. All parts are labelled and come with a key card. Dimensions 380 x 240 x 890mm (W x D x H).

Torso without Open Back 21 Parts. Life size showing the head with nasal and buccal cavity, half brain, eye with optic nerve. Removable 2-lung halves, heart in parts, liver with gall bladder, 2-part stomach, large and small intestines with appendix flap opening and cover, and half of Kidney. Male genital organs in 4-parts and female genital organs in 2-parts with embryo in the 3rd month of pregnancy. Mounted on a base. Numbered with English Key Card. Dimensions (W x Dx H): 380 x 240 x 890 mm.

Life size human torso model with open front and back sections. This life size 3D model of the human torso is ideal for studying the structure and fuctions of the organs. The model is extremely detailed and provides an excellent overview of the human torso. Contains the following parts: Head, Brain (4 parts), Eye, Torso, Lungs (2 parts), Heart (2 parts), Liver, Stomach (2 parts), Intestines (4 parts), Kidney, Artery and Vein, Male Genital Organ (4 Parts), Female Genital Organ (3 parts), Vertabra, 7th Vertabra. Some parts are removable and dissectable.. Dimensions 380 x 240 x 900mm (W x D x H).

This 12 part anatomically correct unisex human torso is hand-painted true to detail and made of high-quality plastic. Developed and modelled in Germany this is ideal for teaching and understanding human anatomy, offering hands-on experience. Supplied complete with Torso Guide. The following components of this unisex torso are removable: • 2-part head • 2-part heart • lungs • Stomach • Liver with gall bladder • 2-part intestinal tract • Front half of kidney

This classic 18-part unisex human torso model is hand-painted true to detail and made of high-quality plastic. Developed and modelled in Germany this is ideal for teaching and understanding human anatomy, offering hands-on experience. This human torso model has the unique feature of an open neck and back section going from the cerebellum to the coccyx. Vertebrae, intervertebral discs, spinal cord, spinal nerves, vertebral arteries, and many other features are represented in detail in this colourful replica of the human anatomy. Supplied complete with torso guide. 18-part unisex human torso model includes the following removable parts and organs: • 7th thoracic vertebra • 6-part head • lungs • 2-part heart • Stomach • Liver with gall bladder • 2-part intestinal tract • Front half of kidney • Front half of urinary bladder

This deluxe dual-sex, 28-part human torso from 3B offers everything you need for detailed demonstration in human anatomy. The model comes complete with removable male and female genital inserts, opened neck and back section to study vertebrae, intervertebral discs, spinal cord, spinal nerves, vertebral arteries etc., deluxe head with 4-part brain and much more. Ideal for advanced demonstrations in biology or medical settings and supplied complete with torso guide. The following parts of the 28-part deluxe human torso are removable: • 7th thoracic vertebra, female chest wall • 6-part head • Female breast covering • 2 lungs • 2-part heart • 2-part stomach • Liver with gall bladder • 4-part intestinal tract • Front half of kidney • 4-part male genital insert • 3-part female genital insert with foetus

DNA sequence information is being compiled by various genome initiatives and numerous research groups around the world. The management of this data is known as bioinformatics. This information is stored in various DNA sequence databases which can be readily accessed via the internet. In this experiment, students read x-rays containing DNA sequences which represent segments of important cellular genes. Using bioinformatics databases, students compare and extrapolate database information and identify the gene product. Kit includes: instructions, 3 sets of 4 autoradiograms. All you need: white light visualization system, computer access to the internet. For 12 Groups. Complete in 45 minutes.

Your students use primers for 300 base pair Alu insertion in chromosome 16 (PV92) to determine their own genotype! They can then compare their class results with others around the world over the internet. For 25 Students. Time required: Set up 30 min. PCR 2 hours or overnight Electrophoresis 45 min. Kit includes: instructions, proteinase K, PCR beads, control DNA and primers, microtubes, chelating agent, agarose, DNA ladder, practice gel loading solution, gel loading dye, electrophoresis buffer, gel stain. All you need: micropipettes to measure between and 50 µl, tips, waterbath, thermal cycler, electrophoresis tank and power supply.

In this experiment, students learn how to apply the gas laws to the function of the microrespirometer. Students will observe cell respiration of germinating seeds and describe the effects of temperature on the rate of cell respiration. Kit includes: instructions, 1 mL pipet, glass beads, peas, potassium hydroxide solution, cork stoppers, absorbent cotton, nonabsorbent cotton, plastic vials, parafilm. All you need: thermometers, trays (at least 14"" long), silicon glue, cork borer, tape, timers For: 10 groups.

Refill for FO91850 Blood Typing Kit.

When normal cells are grown in culture they stop growing when they become overcrowded. This is called contact inhibition. Cancer cells in culture grow in an uncontrolled way because they have lost this property. This helps tumors to form in the body. In addition, many different cell types can be present in single tumor. This experiment allows students to see the differences between normal and cancer cells in both their growth and cell types. Kit includes: instructions, multispot slides (2 cell types each), fixing agent, eosin and FlashBlue™ stain, mounting medium, cover slips, transfer pipets, immersion troughs. All You Need: Microscope for 400x magnification. For 6 Lab Groups. Complete in 35 minutes.

Cell Culture is vital technology used in life science research and in biotechnology laboratories. The study of basic cell biology, diseases and cancer, the development and testing of new therapeutics, and the production of new drugs relies on using the techniques introduced in this experiment. Students will learn how to grow eukaryotic cells in culture, basic cell staining and how to count cells. The techniques used in these experiments will provide the student with skill set desired in both academic research and industry. Kit Includes: instructions, growth media, flasks, Giemsa stain, trypan blue dye, sterile T25 flasks, sterile culture dishes, sterile large pipets, small pipets, cell counting chambers, Sf9 insect cells. All you need: microscope and spray bottle with 70% ethanol or methanol. For 6 Lab Groups. Basic cell culture techniques 30 min., Examination of insect cell cultures 30 min., Maintenance of insect cell cultures 1 hour, Cell Viability using trypan blue 30 min., Differential staining using giemsa stain overnight.

In this lesson, students explore how DNA technology can be used to explore the relationship between genotype and phenotype using one of two exciting scenarios (medical diagnostics or alien genetics). Fluorescent dyes simulate DNA fragments, eliminating post-electrophoresis staining and saving you valuable classroom time. Kit includes: instructions, Ready-to-Load™ dye samples, agarose powder, practice gel loading solution, electrophoresis buffer, microtipped transfer pipets. All you need: electrophoresis apparatus, power supply, microwave or hot plate, and black light (BI130920 recommended). For: 10 Groups

DNA electrophoresis equipment for the whole class! Discover how easy electrophoresis can be with this classroom set. Features: • Fast 20 minute gel run • Easy gel casting • Reliable excellent results Kit includes: • 1 x HexaGel Electrophoresis Tank (for gels) • 6 x gel trays with GelCaps and combs • 1 x DuoSource™ 150 Power Supply • 6 x 40 µL minipipettes tips

The latest in electrophoresis design! This MV10 gel tank is designed for easy separation of proteins on polyacrylamide gels utilizing the Edvotek unique gel support cassette clip. It allows gels to be easily inserted or removed and holds them in place securely. The MV10 unit holds one 9 x 10 cm gel cassette and can accommodate most precast polyacrylamide gels.• Sleek new design improves run speed• Improved support clip holds gel securely• Push tabs for easy lid insertion removal• Color-coded for fool proof setup• Stabilising feet improve balance cooling

The DuoSource™ is our most popular electrophoresis power supply and runs gels quickly - in only 20-30 minutes at 150 V! Features: • Max Voltage: 150 Volts • Voltage Steps: 75 or 150 Volts • Max Current: 300 Milliamps • Output Type: Constant Voltage • Lead Inputs: 2 Sets, Recessed, Colour Coded • Fuse: 1.0 Amp 250 V Glass Fuse • Input Power: 60 Hz, 110 V

Power any combination of EDVOTEK® electrophoresis units with this mighty power supply! Features an easy-to-use, full programmable interface for setting voltage, current or timer control with each parameter displayed in real-time. Programs may be paused or resumed at any point. Run experiments in the least time possible with this powerful and versatile unit! 2-year warranty. • Max Voltage: 300 Volts • Voltage Steps: 10-300 Volts • Max Current: 500 Milliamps • Output Type: Variable Voltage • Lead Inputs: 4 Sets, Recessed, Colour Coded • Input Power: Universal Voltage • Dimensions 150 x 150 x 90 mm (L x W x H).

Run the full spectrum of horizontal electrophoresis experiments with this versatile package! Our newly reimagined M12 Complete™ supports one or two student groups in two standard length gel trays for experiments that require less separation, or one long gel tray for experiments that require more. Produces excellent results in 15-30 minutes and includes a lifetime warranty. Features: • Includes DNA DuraGel™ for pipetting practice! • Large colour coded push tabs for easy lid insertion & removal • Pour spout for buffer disposal • Improved ventilation reduces lid condensation • User replaceable electrodes • Chamber reverse compatible with previous Edvotek® accessories Kit Includes: • (2) 7 x 7 cm Gel Trays • (1) 7 x 14 cm Gel Tray • (2) 6/8 Tooth Combs • (4) Rubber End Caps • (1) DNA DuraGel™

Designed for six groups of students to load their own individual gels and the six gels are run together in 30-40 minutes giving excellent results! • Includes DNA DuraGel™ for pipetting practice!• Contoured lid for enhanced gel visualization• Large colour coded push tabs for easy lid insertion removal• Pour spout for buffer disposal• Improved ventilation reduces lid condensation• User replaceable electrodes• Chamber reverse compatible with previous Edvotek® accessories. Kit includes: • (6) 7 x 7 cm gel trays • (6) 6/8 tooth combs • (12) rubber end caps • (1) DNA DuraGel™

Drinking water is routinely tested for contamination. If a screening tests positive, more sophisticated tests are required. One such test uses PCR in multiplex format. In this experiment, students will test for the presence of three separate, classroom-safe organisms in a water sample using a single PCR reaction. Kit includes: instructions, control DNA and primers, DNA ladder, proteinase K, PCR EdvoBeads, gel loading dye, agarose, electrophoresis buffer, InstaStain® Ethidium Bromide and FlashBlue™ stain. All you need: Automatic micropipets (5 - 50 µl) and tips, waterbath, ice, balance, microcentrifuge, thermal cycler, electrophoresis apparatus, power supply, microwave or hot plate, UV transilluminator. For: 25 Students

Caenorhabditis elegans is soil nematode that has great potential for educational research, partly because of its rapid (3-day) life cylce, small size (1.0 mm long adult), and ease of laboratory growth cultivation. Thousands of animals can grow on single petri dish seeded with lawn of Escherichia coli as the food source. Students will engage in an environmental toxicity scenario and will use pre-diluted concentrations of heavy metal solution to determine the effect on the worms. Kit includes: instructions, C. elegans-normal, C. elegans-Toxicity mutant, petri dishes, NGM medium, E. coli 0P50 Bactobeads™, cell counting chambers, buffer, pipets, sterile loops, tubes and heavy metal compounds. All you need: ethanol, timers, microscopes, covered box. For: 10 groups.

Give your students the opportunity to carry out PCR in the classroom! This kit provides easy to follow instructions for your students to develop various crime scene scenarios independently. Plasmid DNA, when amplified by PCR, provides products that represent individual DNA profiles. Your students can then solve a crime! Kit includes: instructions, PCR EdvoBeads, DNA templates, primers, DNA ladder, ultrapure water, wax beads, agarose, loading dye, electrophoresis buffer, InstaStain® Blue, and FlashBlue™ stain. All you need: micropipets to measure between 5 and 50 µL, tips, thermal cycler, electrophoresis apparatus, power supply, microwave or hot plate, UV transilluminator. For: 25 Students working in 5 groups

Gold leaf, pack 6.

When DNA is subcloned in the pUC polylinker region, ß-galactosidase production is interrupted, resulting in the inability of cells to hydrolyze X-Gal. This results in the production of white colonies amongst background of blue colonies. This experiment provides DNA fragment together with linear plasmid and T4 DNA Ligase. Following the ligation to synthesize the recombinant plasmid, competent E. coli cells are transformed and the number of recombinant antibiotic resistant white and blue colonies are counted. ß-galactosidase activity is assayed from blue and white bacterial cells. This experiment can be broken down into three modules: ligation, transformation, and assay of ß-galactosidase. Kit includes: instructions, Linearized pUC plasmid DNA fragment, T4 Ligase, bacterial LyphoCells™ for transformation, reconstitution buffer, XGal in solvent, IPTG, calcium chloride, antibiotic, ReadyPour™ Luria Broth Agar, Luria broth media for recovery, growth media, assay components, plastic supplies All you need: incubation oven, two waterbaths, shaking incubator or shaking waterbath, microwave or hot plate, automatic micropipet and tips, spectrophotometer, balance, centrifuge, microcentrifuge, glassware and cuvettes, distilled water, ice. For: 5 groups.

The Green Fluorescent Protein from the jellyfish Aequorea victoria is used extensively in all areas of science. Many organisms have been transformed with the GFP gene, the gene responsible for bioluminescence in jellyfish. It has proven to be so useful that scientists have mutated it to produce Blue Fluorescent Protein (BFP). In this simple experiment your students will transform bacteria either with GFP, BFP or both! Kit includes: instructions, cells, plasmid DNA, IPTG, ampicillin, transformation solution, ReadyPour agar, Luria broth, petri dishes, sterile pipettes, BactoBeads™ and loops. All You Need: Waterbath, 37˚C incubation oven, microwave or hot plate, long wave UV lamp. For 10 Lab Groups, complete in 50 minutes and grow overnight.

The MP-100 measures the melting point of chemicals from ambient to 250°C. Samples need to be placed in a sealed end capillary tube and located in the heating block. Up to three tubes can be tested at one time. The heating rate can be adjusted manually between 1 to 20°C/min, and for rapid heating 10°C/min, to obtain an accurate melting point range. The sample and melt process can be viewed via the magnifying lens, which is illuminated by bright LEDs. Record the melt temperatures from the thermometer, positioned horizontal to the samples to allow simultaneous viewing. The lens can be detached for cleaning and simple to follow instructions are printed directly on to the unit, making it easy for students to use. For 220/240V. Dimensions (L x W x H): 370 x 140 x 110 mm.

Designed with safety and ease of operation in mind making it ideal for use in education. Two samples can be tested simultaneously. Built-in illumination and viewing magnifying lens give clear viewing of samples. Temperature range: Ambient to 300°C. Three digit LED display. Resolution is to 0.1°C and temperature to melt is variable from 1-10°C. For 220/240 V. Dimensions (L x W x H): 160 x 220 x 170mm.

Designed with safety and ease of operation in mind making it ideal for use in education. Two samples can be tested simultaneously. Built-in illumination and viewing magnifying lens give clear viewing of samples. •Temperature range: Ambient to 300°C. •Three digit LED display. •Range rates: 20°C/min to plateau and 2°C/min to melt. •For 220/240V. •Dimensions (L x W x H): 160 x 220 x 170 mm.

A mains operated ultraviolet light source ideally suited to demonstration use. Comes complete with on/off switch. The tube is 450 mm long and is housed in powder coated steel with back reflector. Suitable for showing the fluorescing properties of chemicals (eg. washing powder) and for work in the new Forensic Science part of the syllabus. Emits UVA light.

An aluminium block with an angled hole drilled to accept thermometer (not included). Dimensions (Diameter x H): 65 x 50 mm.

A glass apparatus with side tube to allow stirring by convection of heating liquid. Dimensions: 182 x 84 mm. I.D. 16 mm.

Spare thermometer, spirit filled, to 250 °C.

Designed with microprocessor-controlled dual thermocouples, this stirring hot plate offers accurate temperature control and protection from overheating. The analogue models feature a coloured LED indicator which surrounds the heat control knob illuminating the actual surface temperature in real time. Powerful magnets and motor provide stirring speeds of up to 2000 rpm and mixing capability of up to 15 L of liquid. The square plate design allows flexibility of vessel sizes and combinations. Up to four 250 mL beakers can easily fit on the surface at the same time. To keep you safe, a “hot” warning light flashes whenever the plate surface temperature is above 50°C and continues to flash until the temperature drops below 50°C, even when unplugged. The unit includes BioCote antimicrobial protection which reduces the presence of odour and stain causing microbes such as bacteria, mould, and fungi on the product surface by up to 99.99%. Formulated from silver ion additives, BioCote provides built-in antimicrobial protection to support a more hygienic laboratory environment. This model includes an integral fitting for a retort rod and allows the retort base to slide underneath. Featuring a coated aluminium top plate for rapid heating and better temperature uniformity. Please Note: BioCote® technology does not protect users or others against disease causing bacteria, germs, viruses, or other harmful organisms. This technology is not a substitute for good hygiene and/or cleaning practices.

Designed with microprocessor-controlled dual thermocouples, this stirring hot plate offers accurate temperature control and protection from overheating. The analogue models feature a coloured LED indicator which surrounds the heat control knob illuminating the actual surface temperature in real time. Powerful magnets and motor provide stirring speeds of up to 2000 rpm and mixing capability of up to 15 L of liquid. The square plate design allows flexibility of vessel sizes and combinations. Up to four 250 mL beakers can easily fit on the surface at the same time. To keep you safe, a “hot” warning light flashes whenever the plate surface temperature is above 50°C and continues to flash until the temperature drops below 50°C, even when unplugged. The unit includes BioCote antimicrobial protection which reduces the presence of odour and stain causing microbes such as bacteria, mould, and fungi on the product surface by up to 99.99%. Formulated from silver ion additives, BioCote provides built-in antimicrobial protection to support a more hygienic laboratory environment. This model includes an integral fitting for a retort rod and allows the retort base to slide underneath. Featuring a chemically resistant glass ceramic top plate that stays cool around the edges to help prevent burns. Please Note: BioCote® technology does not protect users or others against disease causing bacteria, germs, viruses, or other harmful organisms. This technology is not a substitute for good hygiene and/or cleaning practices.

Designed with microprocessor-controlled dual thermocouples, this stirring hot plate offers you accurate temperature control and protection from over-heating. Actual surface temperature is displayed in real time on an easy-to-read digital screen. Powerful magnets and motor provide stirring speeds of up to 2000 rpm and mixing capability of up to 15 L of liquid. The square plate design allows flexibility of vessel sizes and combinations. Up to four 250 mL beakers can easily fit on the surface at the same time. To keep you safe, a “hot” warning light flashes whenever the plate surface temperature is above 50°C and continues to flash until the temperature drops below 50°C, even when unplugged. The units also include BioCote antimicrobial protection which reduces the presence of odour and stain causing microbes such as bacteria, mould, and fungi on the product surface by up to 99.99%. Formulated from silver ion additives, BioCote provides built-in antimicrobial protection to support a more hygienic laboratory environment. Includes an integral fitting for a retort rod and allows the retort base to slide underneath. Features a coated aluminium top plate for rapid heating and better temperature uniformity. Please Note: BioCote® technology does not protect users or others against disease causing bacteria, germs, viruses, or other harmful organisms. This technology is not a substitute for good hygiene and/or cleaning practices.

Constructed with powerful magnets and motor, this compact stirrer provides you with stirring speeds of up to 2000 rpm and mixing capability of up to 15 L of liquid. The square plate design allows flexibility of vessel sizes and combinations. Up to four 250 mL beakers can easily fit on the surface at the same time. For safety, this unit is designed to direct spills away from the user controls. The stirrer also features BioCote® antimicrobial protection which reduces the presence of odour and stain causing microbes such as bacteria, mould, and fungi on the product surface by up to 99.99%. Formulated from silver ion additives, BioCote provides built-in antimicrobial protection to support a more hygienic laboratory environment. Features a chemically resistant glass ceramic plate.

Designed for general lab applications requiring only rough vacuum and moderate pressure. The pump is housed in tough, lightweight, plastic housing with an integral carrying handle and can be run continuously permitting use in applications such as filtering, drying, aerating and gas sampling. Easy to connect to apparatus via the hose connection on the side of the unit. Not recommended for organic, basic and acidic vapours. Vacuum to 292 mbar (219 Torr/21.3 in. Hg) and pressure to 2.3 bar (33 PSIG). Quiet, oil-free technology. Please note this pump is not suitable for ""Bell in Jar"" experiments.

The SM5 mini stirrer is a powerful magnetic stirrer, capable of stirring up to 1 litre with an adjustable stirring speed up to 2,000 rpm. The unit is made from robust polypropylene with chemically resistant polycarbonate top. Features: • Lightweight stirrer • Capable of stirring up to 1 litre • Universal power adaptor • With BioCote antimicrobial protection • Dimensions (L x W x H): 143 x 143 x 64 mm

The HI-190M-0 is a compact and lightweight mini magnetic stirrer with plastic cover and can stir up to 1 litre. The compact size of this stirrer allows users to maximise bench space for efficiency and safety The internal Speedsafe™ mechanism ensures that the maximum speed of 1,000 rpm is never exceeded. The ABS housing will resist the most harmful chemicals in the classroom. Supplied with; •ABS cover •Micro stir bar •Instructions

A cost effective hotplate/stirrer, the 'MS-Series has the following features and specification: • Case construction: Steel, with chemical resistant coating • Stage area: 180 x 180 mm • Temperature: Up to 400 °C (max) • Speed range: 100 - 1500 rpm • Power Supply: 220 AC

Constructed from chemically resistant ceramic coated steel, the MS-200 analogue magnetic stirrer delivers excellent reliability with reproducible results at a sensible price. A screwed 12.5 mm screwed thread is included for the addition of a retort rod (not included).

This digital xenon stroboscope is a lightweight, sturdy and compact instrument which features digital, variable flashing rate adjustment and external triggering facility. The bright xenon tube makes it ideal for educational uses such as wave, motion and vibration experiments. Supplied with a mains lead. Specifications: 60 to 18,000 rpm, to 300 Hz, External triggering signal, Power supply: 240 V AC, 50 Hz. Dimensions (L x H x W): 215 x 140 x 150 mm.

This Sonometer pickup contains a single guitar-type magnetic pickup. When placed under a moving steel wire, such as on Sonometer, an emf is induced in the pickup which can be displayed on an oscilloscope. Period, frequency and amplitude measurements can then be taken from the oscilloscope screen. The whole unit, constructed in clear acrylic, measures approximately 90 x 40 x 20 mm and comes with integral 4 mm sockets and instructions for use.

A generator for producing mechanical vibrations when used with function generator. The input is fed to coil which is mounted within the field of cylindrical permanent magnet. The unit is fuse protected. Locking mechanism protects from shock during transit and when changing accessories. Max input 6V/1A. Dimensions (L x W x H): 100 x 100 x 120 mm.

This 4W, 8 Ohm Mylar-cone loudspeaker comes mounted on an acrylic base, so that it can be used either vertically or horizontally. The front of the speaker has a hard protective cover with drilled holes. Dimensions (Speaker Dia.): 60 mm. Overall Dimensions (H x W x D): 120 x 90 x 40 mm.

For use with SI30825. A thin layer of sand is spread over the plate and resonance patterns (""Chladni"" figures) can be observed at certain frequencies. The plate resonances are audible.

Steel strips giving six vibrating lengths. For use with SI30825. Fundamental frequencies at 11, 15, 21, 36 and 50 Hz can be readily observed. Interesting standing waves can be seen up to 300 Hz and heard up to 900 Hz.

For use with SI30825. A thin layer of sand is spread over the plate and resonance patterns (""Chladni"" figures) can be observed at certain frequencies. The plate resonances are audible.

For use with SI30825 for demonstrating the relationship between frequency and the number of vibrational nodes. Dimensions (Dia.): 290mm.

Aluminium. Boxed set of 8. Range C.256 Hz to C512 Hz.

This wave machine, which comes in kit form and must be self-assembled, is designed to demonstrate the theory of waves. The kit comprises: transverse wave machine with 80 arms spaced on nylon line with detachable weights to provide an example of transverse wave propagation in which movements of the rods create the waves; Two loaded elastic cords to illustrate transverse wave motion; An extension spring with weights, for the propagation of both longitudinal and transverse waves; teacher's book which describes the experiments and gives detailed quantitative analysis.

To demonstrate form and propagation of longitudinal and transverse waves. This simple wave demonstrator rotates a set of cams that raise and lower 24 vertical rods with plastic highlighted tips for easy viewing. It is 480 mm long, strong, and almost silent in operation. Lubrication is not required and students can see from both sides. Eight of the rods are turned at 90 degrees to simulate transverse wave motion. The handle is fitted with a circular scale marked in degrees of rotation.

This vibration generator is a sturdy, user-friendly tool for providing electronically controlled waves. Ripples can be created for the study of wave motion. (Recommended for use with square wave generator). Dimensions: 140 mm, overall diameter: 114 mm. The amplitude is +/- 3 mm.

A Slinky-type spring for wave demonstration, with a wooden storage stand. Stand helps protect the spring in storage and keep it in good condition. Closed Spring Dimensions (Dia. x L): 72 x 220 mm. Base Dimensions (L x W x H): 150 x 150 x 355 mm.

This quality spring is ideal for producing longitudinal waves with vibration generator connected to a signal generator. Spring constant 4.7 N/m. Closed Dimensions (L x Dia.): 155 x 27 mm.

An economical alternative to pure squirrel brushes. Softer hair ideal for shading and softening edges.

For use with SI30825. For demonstrating standing waves. Dimensions (L): 2 metres.

Bristle, loop form on wooden handle.

Flat section steel wire in helical coil.

J Cloth' strong, durable cleaning cloths, suitable for washing, dusting and polishing. Rapid drying hygienic wipes. Sold as a pack of 50.

Nylon with cotton tip on wire handle.

Non-absorbent white. In packs of 500g.

Fan shaped end on wire handle.

Absorbent white. Hospital quality.

Bristle on wire handle, to fit all size burettes.

Fan shaped end on wire handle.