Timstar - Science

The simplest and cheapest way to observe CO2 release! Ideal for individual student use. These respiration chambers can be part-filled with lime water or bicarbonate indicator solution, the organism or material to be tested placed in the top chamber and the carbon dioxide given off or expired can be observed by change in the solution. Observation is easy due to the transparency of the box. The apparatus consists of an external chamber with an internal sample holder which is perforated to allow the exchange of gases. This holder prevents contact between the sample and solution below. Dimensions (Diameter x H): 35 x 75mm.

Pressed steel blade on a 130 mm handle.

The broad opening of this soil sampler makes it easier to inspect the soil sample while it is still in the auger. Total length of the sampler is 63 cm long and it yields soil sample of approximately 49 cm in length with diameter of 22 mm. Made from electroplated steel.

For any number of easy instant pH checks on soil or compost in the laboratory or garden. Reads direct from soil or compost without sampling. Includes full instructions on adjusting pH to suit individual plants. pH readings for pH 3.5 to pH 9.0 instantly shown on the meter's display.

This meter ensures the right individual light and moisture conditions. Tests the moisture deep down where the roots are.

Provides quick indications of soil moisture pH and light conditions.

Set of six stainless steel nesting sieves in plastic frame. Complete with plastic lid and receiver. Mesh numbers 5, 10, 35, 60, 120, and 230.

This Hanna Soil test kit is ideal for testing and monitoring the quality of the soil. Tests include pH level, nitrogen, phosphorous and potassium. Easy to use a soil sample is mixed with water and combined with one of the chemical reagents supplied with the kit. The resulting solution is compared to the colour chart supplied to determine the concentration of the element being tested, which is indicated as low, medium or high traces (except pH, which is between pH4 and pH9, in 1pH increments). The kit comes with all the necessary components for 10 tests of each of the parameters or 25 tests 4 parameters.

Spirit filled thermometer in aluminium tube -10 to 110°C and 20 to 240°F. Length: 225 mm.

A lightweight angle and height measuring instrument. Point it at the top of building or tree, pull the trigger, and then read the angle on the protractor. Height is easy to calculate using the guide supplied

For survey field work. PVC covered wooden poles with solid steel points. Red and white graduated every 500 mm. Dimensions (L x Diameter): 2 metres 28 mm.

Simultaneously displays dissolved oxygen and temperature. Units of measure are saturation mg/L or ppm for dissolved oxygen and °C or °F for temperature. Advanced features include data hold 25 points memory auto power off automatic temperature compensation salinity and altitude compensation. Careful use and maintenance will provide years of reliable service. Easy to replace screw on membrane cap with optional extension cables. • Oxygen level displayed as Saturation or Concentration (mg/L [ppm]). • Adjustable Altitude Compensation (0 to 20,000 ft in 1,000 ft increments) • Adjustable Salinity Compensation from 0 to 50 ppt • Analogue bar graph indicates trends • Memory stores up to 25 data sets with DO and Temperature readings • Self calibration on power up • Data Hold, Auto power off, Low battery indicator • Waterproof to IP57 • Optional 1 m or 5 m extension cable • Complete with DO electrode, protective sensor cap, spare membrane cap, electrolyte and four 1.5 V batteries.

Detects Nitrate at 0, 10, 25, 50, 100, 250, 500 ppm. Supplied in vial of 50 strips.

A unique design feature gives direct reading of wind speed without the need to count revolutions. The low and high calibrations register m/s and the Beaufort scale. Can be hand held or fixed permanently.

This multifunction meter measures number of environmental conditions, as well as wide range of electronics measurement, making it an excellent general purpose meter for school science departments. Featuring auto-range, data hold, relative measurement, backlight, auto power-off, and IEC1010 CatII 1000 V Conformity. • DC voltage: 0.4 V/4 V/40 V/400 V/600 ±0.7 % • AC voltage: 4 V/40 V/400 V/600 ±0.8 % • DC current: 40 mA/400 mA ±1.2 %, 10 A ±2.0 % • AC current: 40 mA/400 mA ±1.5 %, 10 A ±3.0 % • Resistance: 400 R/4 k/40 k/400 k/4 M ±1.2 %, 40 ±2.0 % • Capacitance: 4 nF/40 nF/400 nF/4 μF/40 μF/200 μF ±3.0 % • Frequency: 10 R/100 R/1 k/10 k/100 kHz ±2.0 % • Duty cycle: 0.1 ~ 99.9 ±3.0 % • Temperature: -20 °C 400 °C ±3.0 (0.1 °C), 400 °C 1000 °C ±3.0 (1 °C) • Humidity: 30 % ~ 95 % RH ±5.0 %RH • Light: 4000 lux/40000 lux ±5.0 % • Sound level: 35 - 100 dB ±4 dB • Continuity test • Power: 9 V (6F22) x1 • Size: 185 x 85 x 44 mm

A combined temperature and humidity meter ideal for environmental monitoring. The large LCD is easy to read at distance. Simultaneous display of humidity in RH and temperature in °C or °F; 63 x 80 mm large digit LCD; Min/max memory since last reset; Impact-resistant ABS case with desk stands and wall mounting; Supplied with battery. Dimensions (L x W x D): 138 x 95 x 20 mm. • Temp range: -10°C to +50°C • Humidity Range: 25% to 98% RH • Resolution: 0.1°C, 1% RH • Power: x 1.5V AA battery (supplied); • Weight: 143g

Though the use of blood type in forensic investigation is not enough to prove guilt, it may aid in exonerating potential suspect. In this activity, students act as lab technicians and assist investigators by examining evidence collected at crime scene. Students first use a presumptive blood test to determine if a substance on a stained piece of cloth may be blood, and then determine the blood type of a sample collected at the scene. Students then compare their results to those of samples provided from two suspects. Kit contains enough materials for 10 groups. Teacher's Manual and Student Study Guide copymasters are included. Kit includes: • 40 Blood typing trays • 10 Cotton swabs • 1 Cloth • 1 bottle 70% ethanol • 1 bottle Blood detection reagent #1 • 1 bottle Blood detection reagent #2 • 4 Simulated blood samples: Victim, Suspect #1, Suspect #2, Crime Scene Evidence • 1 bottle Simulated anti-A serum • 1 bottle Simulated anti-B serum • 1 bottle Simulated anti-Rh serum

Blood typing is a method of classifying blood based on the presence or absence of specific proteins (erythrocytes), on the surface of red blood cells. Blood type, an inherited characteristic, is valuable to know in that it affects medical procedures, such as surgery and transfusions, paternity testing, as well as serving as evidence in criminal investigations. Determining blood type can help provide supporting evidence or eliminate a possible suspect's involvement in crime. This activity includes a teachers manual and a student guide and analysis copy-masters. There is enough material for 15 groups. Note: This activity uses Innovating Science Simulated Blood and is safe for classroom use. Kit Contents: • Blood typing trays • 4 Simulated blood samples: Victim, Suspect #1, Suspect #2, Crime scene • 1 set ABO/Rh blood typing anti-sera • 1 pack mixing sticks

Crime scene investigators examine the scene of possible violent crime for evidence, such as fingerprints, hair, fibre, etc. After collecting the evidence, they notice there is no visible blood. Someone sprays the area with a liquid then turns out the lights. A strange, faint glow appears in certain areas of the scene. Learn how Luminol is used in scenes like this everyday. The special Luminol formulation does not require a separate hydrogen peroxide catalyst. Simply re-hydrate and use with the simulated blood haemoglobin to show your class. This activity includes an instruction manual with suggested activities. There is enough material for several demonstrations. Kit Contents: • 1 bottle Luminol • Re-hydrating Solution • 1 bottle Luminol powder • 1 bottle simulated blood haemoglobin

ABO typing of blood left at the scene of crime can help to narrow down a list of suspects. In this experiment your students will use agglutination to identify the blood group of unknown blood samples as a step to identify a criminal. Kit Includes: instructions, control ABO simulated blood samples, unknown simulated blood samples, transfer pipettes, microtitre plate. All You Need: automatic micropipette (5-50 µL) with tips (optional). For 10 Lab Groups. Complete in 45 minutes.

High quality, non-adhesive plastic tape printed with the words 'CRIME SCENE DO NOT ENTER'. This tape is ideal for crime scene protection or other areas where forensic work needs to be carried out or is still ongoing. Simply unroll the plastic tape and it can then be tacked, stapled, wrapped or tied around suitable objects to create an instant and highly visible barrier. Dimensions (W x L): 75 mm x 100 metres.

Disposable protective suits suitable for forensics work. Size large. Sold individually.

Disposable, blue PVC over-shoes, to protect feet and help prevent cross contamination. Supplied as pack of 10.

Correctly packaged evidence is essential if reliable scientific results are to be obtained. Preserving the chain of custody is important because it maintains the integrity of the evidence. Whenever person comes in contact with piece of evidence, the contact must be documented to prove that the evidence was always accounted for and that no one tampered with it. These specially manufactured bags have many tamper-evident features, including unique bag number and printed label. These bags also have the added benefit of being leakproof.

These plain inch (15 cm) sterile dry swabs on plastic shafts, for specimen/evidence collection, come labelled for inclusion of details such as date, site and time references. Each swab comes in its own polypropylene tube for transport back to the laboratory. Sold as pack of 10 DNA-free swabs, each in its own tube.

An ultra violet 'security' type pen where the ink is invisible under normal light, but shows up under UV light.

These small economy pads leave crisp, clear imprint and dry almost instantly. Only slight residue is left on the fingers which can be removed by rubbing them together or wiping them with towel or cloth. These small pads will give you approximately 1000 individual inked impressions. Dimensions (Dia.): 50 mm.

Pre-cut, uniform quality lifting tape for the ultimate preservation of latent fingerprints, ready cut for convenience. It will conform and stretch and allow fingerprints to be lifted from doorknobs, wooden surfaces, light bulbs etc. Supplied with protective backing sheet. Dimensions (L xW): 120 x 65 mm.

A high quality, dome headed, hand made brush, manufactured by blending up-to-date technology with traditionally crafted skills. These brushes permit even the faintest print to be developed with minimal distortion. Made with soft pony hair, this is a very popular and also economical, fingerprint brush. Each brush is supplied in a clear plastic tube to assist storage and avoid damage to bristles.

A very useful kit designed for students investigating fingerprinting, easily adaptable to suit your needs and lesson plans. Including an information booklet explaining fingerprinting and instructions for use. Kit Contents: • user manual and carry case • Fingerprint powders (4 magnetic, fluorescent and white) • 12 hinge lifters (4 of each black, white and clear) • magnetic wand • fingerprint brushes • 1 pair of protective gloves • protective apron • protective face mask.

Evidence left behind at a crime scene can identify a potential culprit. Even in this age of DNA, fingerprints and blood stains are still important at helping to identify a criminal. In this experiment, your students will solve crime by dusting for fingerprints and use fluorescent dust (not included) to search for and identify trace amounts of blood. Kit Contents: • instructions • brushes • magnifying lens • fingerprint cards • black dusting powder • fingerprint lifters All you need: alcohol, fluorescent dust, and long wave U.V. light. For 10 lab groups. Complete in 50 minutes.

Quartz, battery operated with sweep second hand.

Ideal for storing irregularly shaped items securely, this Gratnells trays insert has scored squares, which can be removed to form the shape required.

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Shallow Gratnells Tray. 427 x 312 x 75 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)

Deep Gratnells tray. 427 x 312 x 150 mm (L x W x D)