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Chemistry
Pneumatic Trough, Glass, 200 x 100 mm
Circular pneumatic trough, made from clear soda-lime glass.
194.86 AED
Pneumatic Trough, Glass, 250 x 130 mm
Circular pneumatic trough, made from clear soda-lime glass.
259.28 AED
Pneumatic Trough, Glass, 300 x 130 mm
Circular pneumatic trough, made from clear soda-lime glass.
280.63 AED
Gas Washing Bottle, Dreschel
The head is fitted with 8 mm diameter inlet and outlet tubes.
142.29 AED
Gas Syringe, 100 mL
Ground glass syringe. Marked with 20 mL major graduations, and 1 mL minor graduations. Suba-Seal Stoppers ST14710 or ST14715 can be used as resealable stoppers. For video demonstration, visit timstar.co/SubaSealSyringe
223.71 AED
Delivery Tube, Polypropylene, 90°
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
183.70 AED
Delivery Tube, Polypropylene, Bung Top
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
183.70 AED
Delivery Tubes, Polypropylene, Straight
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
164.30 AED
Delivery Tubes, Polypropylene, Small U-Bend
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
193.00 AED
Delivery Tubes, Polypropylene, Medium U-Bend
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
183.70 AED
Delivery Tubes, Polypropylene, Side Arm U-Bend
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
202.30 AED
Melting Point Apparatus
This Melting Point Apparatus has been designed with safety in mind. A single control knob on the front panel incorporates the mains ON/OFF switch with arbitrary scale of 0 to 10. A rapid heat switch allows higher temperatures to be obtained quickly. Sample tubes are illuminated from behind and magnified through a lens. A selector at the rear of the instrument allows a light or dark background. Ceramic insulation around the aluminium heating block minimises heat transfer to the casing.
1857.68 AED
pH Meter with Interchangeable pH Electrode
The 8000 pH meter features an easy to read, LCD display and is supplied with a budget pH electrode. The 8000 pH meter indicates pH over the range of 0 to 14 pH with a resolution of 0.01 pH and an accuracy of ±0.05 pH. The pH readings are manually temperature compensated over the range of 0 to 60 °C (default 25 °C). The unit will power off automatically after ten minutes, maximising battery life. At the touch of a button, the instrument will automatically re-calibrate itself when used in conjunction with pH buffer solutions. Features: •Easy to use re-calibration feature •±0.05 pH accuracy •2 year guarantee on meter, 6 months on electrode •Operating Temperature 0ºC to 50ºC
632.00 AED
pH Electrode
Budget pH electrode. •Ideal for pH measurement of liquids and semi-solids •Ideal for laboratory applications •Ø12 x 120 mm •Temperature operating range 0 to 60°C
190.51 AED
Unit™ Molecular System Kit
Unit™ Molecular Building System is probably the most versatile and durable large scale molecular model building system for front of class demonstrations. Easily build large large-scale models of organic, inorganic and biochemical molecules for demonstration in lecture halls and classrooms. Show molecular shapes with rotating single bonds and non-rotating double and triple bonds, structural isomers and optical isomers, ring structures, chair-boat 'flip' of cyclohexane and VSEPR theory. You can make models of hydrocarbons, alcohols, amines, organic and inorganic acids and bases, carbohydrates, benzene, chlorinated molecules, inorganic molecules and more that the whole class can see! The system uses large (44mm diameter) spheres in seven colours to represent different atoms plus 25mm diameter white sphere to represent hydrogen atom. versatile peg system allows you to use each large model atom in either tetrahedral (sp3), trigonal (sp2), linear (sp), trigonal bipyramidal (dsp3) and octahedral (d2sp3) geometries. These can then be joined with either rigid aluminium or flexible vinyl tubes. These larger scale models are perfect for lectures and classroom demonstrations. Contents include: 70 Atoms: 18 Carbon (black); 6 Oxygen (red); 4 Nitrogen (blue); 6 Halogen (green); 2 Sulphur (yellow); 2 Metal (silver); 2 Other element (white); 30 Hydrogen (white). 144 Bonding pegs: 48 radial, 24 polar, 72 and coordinate. 90 Bonds: 36 Rigid tube (metal) 65 mm; 40 Rigid tube (metal) 83 mm; 4 Rigid tube (metal) 125 mm; 10 Flexible tube (white) 90 mm. • Structures can be seen from the back of the class • Bonds and atoms are to scale for accuracy at 8.5cm per 100pm • Sturdy pegs join atoms and bonds at any bond angle • Easy to handle, build and take apart • Durable plastic and metal parts enable long • Full range of supplementary atoms, bonds and orbitals available
1842.66 AED
Shapes of Molecules Set
The Molyorbital™ model collection set contains sufficient parts to make the eight atomic models shown in the picture. The different shapes are examples of the orientations of the bonds and cover coordination numbers to 6. Lone pairs are represented by brown spheres or brown pear shaped parts. The extra pear shaped parts are included in the set to enable protonated models to be made. e.g. Acid/Base theory, the formation of H3O+ as result of the migration of H+ from hydrogen chloride. Models: linear, HCl (hydrogen chloride); linear, BeCl (beryllium chloride); Bent, H2O (water); trigonal planar, BH3 (boron trihydride); Pyramidal, NH3 (ammonia); tetrahedral, CH4 (methane); trigonal bipyramidal, PCl5 (phosphorus pentachloride); Octahedral, SF6 (sulphur hexafluoride).
140.71 AED
Delivery Tube, Polypropylene, Bung Top 2
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
193.00 AED
Delivery Tubes, Polypropylene, Large U-Bend
Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.
211.60 AED
Chemical Jigsaw, Key Stage 3 Kit
Chemical jigsaws offer highly effective method of teaching chemical formulae and equations. It uses number of interlocking pieces with plus signs and arrows that enable students to build representations of covalent and ionic compounds and also to model equations. Advantages: • More effective understanding of formulae • Enhanced motivation • Use of OHP for demonstrations. Covalent jigsaw:- In the covalent jigsaw, atoms are represented by coloured disks with cut-outs corresponding to the positions of atoms in the periodic table. Atoms are joined by clear bonds representing electrons shared between atoms. The covalent jigsaw is available in two boxed sets. Ionic jigsaw:- The ionic jigsaw pieces build on the popular method of using squares and rectangles to aid the determination of ion ratios when constructing formulae. The parts are translucent and can be placed on an OHP for projection. The formulae can be identified by shape, colour and identifying symbols/formulae can be written on them in felt-tip pen. Please Note: the KS3 kit is required prior to the KS4-upgrade kit.
124.50 AED
Magnetic Sodium Chloride Molecule Kit, 4 x 4 x 4 Lattice
This 3D Molecular Designs Magnetic Sodium Chloride Model will help students to understand the structure and properties of ionic compounds. Each ion has embedded magnets to simulate ionic bonding. The 4 x 4 x 4 Lattice contains 64 ions (32 Sodium and 32 Chlorine). Lattices do not include water molecules, which are available, if required, in the magnetic water molecule kits. The models will help students gain an understanding of: Ionic structure and bonding, The cubic nature of salt crystals, Efficient lattice packing, High melting temperature, and Brittleness Cleavage planes.
1438.71 AED
Hoffman Voltameter, PTFE Stopcock
Comprises three parallel tubes, joined at the bottom with a horizontal tube. The central tube has a funnel for filling with water, and the side tubes have open ends at the bottom to allow bungs that hold electrodes to be fitted, and jets with stopcocks at the top for collecting gas in test tubes. The side tubes are graduated 0-50 x 0.2 mL so that the volume of gas in each can be measured. Clamps and support base (sold separately) are recommended so the unit can be mounted on retort rod.
545.05 AED
Organic and Inorganic Set - Student
Consisting of: Spheres: 6 Carbon, 7 Oxygen, 3 Nitrogen, 2 Sulphur, 6 Halogen, 11 Metal, 2 Phosphorous, and 14 Hydrogen. Links: 20 medium grey, 12 long grey and 5 medium purple. Packed in plastic box with instructions.
147.82 AED
Organic Set - Student
Consisting of: Spheres: 12 Carbon, 6 Oxygen, 2 Nitrogen, 2 Sulphur, 4 Halogen, 1 Metal, 1 Phosphorous, and 20 Hydrogen, and 2 Pyramidal Nitrogen. Links: 26 short white, 26 medium grey, and 12 long grey. Packed in plastic box with instructions.
149.40 AED
Crystal Structures Kit
This kit contains sufficient atom parts to make the Quartz structure. It is supplied in a plastic container with full self assembly instructions.
149.40 AED
Melting Point Tubes 100 mm, Sealed One End
Soda Glass. Outside diameter 1.8-2.0 mm. Wall thickness 0.28-0.32 mm. In packs of 100.
90.91 AED
pH Electrode Storage Bottle 12 mm
Plastic bottles, air-tight with gromit to stop pH electrodes from drying out.
81.40 AED
Atomic Structure Kit, Student Version
These new atomic structure kits from Bright of Sweden are an award-winning, hands-on teaching aid for students. The unique models, based on Bohr's atomic model, allow students to make their own atoms, isotopes and ions and give them great hands-on experience of the structure of atoms. Each kit includes: Box with lid; electron shells on the lid and at the underside of the box; 30 protons; 30 neutrons; 30 electrons; smart storing of subatomic particles inside the box.
282.21 AED
Chromatography Sheets, Whatman Grade 1, 115 x 213 mm
Pattern 'CRL'. Eleven 3mm wide slots. Supplied as box of 100 sheets.
742.67 AED
Electrodes, Round, Copper, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
37.15 AED
Electrodes Round, Iron, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
33.20 AED
Electrodes Round, Zinc, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
49.80 AED
Electrodes, Platinum, with Screw Terminals
Platinum electrodes, with screw terminals. Manufactured in borosilicate glass. Length from tip of foil to tip of terminal, 114 mm.
679.83 AED
Pocket pH Meter, PH-5011A
This pocket pH meter is easy to use, giving fast, accurate and repeatable measurements of pH values. It has the unique feature of a retractable electrode. The LCD display has large digits making it easy to read and the protective cap allows the inclusion of a small sponge to keep the electrode moist to help prolong its life. Dimensions (L x W x D): 158 x 40 x 34 mm. • 0 to 14.0 pH 0.01pH (MPH-5011A) • Impact-resistant ABS case • Splash-proof membrane keypad • Electrode can be extended up to 80 mm • Manual calibration via screw trim pot • Pocket clip moulded on the rear of the case • Supplied with electrode, protective cap, calibration screwdriver, 50 mL calibration solution and carry case • Powered by 9 V PP3 battery • Weight: 120 g • Warranty: 6 months
509.87 AED
Buffer Solution Capsules, pH 10
These buffer solution capsules for use with pH electrodes are convenient and easy to use. Simply split the capsule in two and add to 100 mL of deionised/distilled water and mix. No minimum shelf life, so will keep for years!
127.67 AED
