Timstar - Science

Prepared slide, angiospermae - dicot leaves, prunus lauro-cerasus TS leaf.

Prepared slide, angiospermae - monocot leaves, allium leaf epidermis 'E' with stomata.

Prepared slide, angiospermae - monocot leaves, zea mays (Maize) TS leaf.

Prepared slide, angiospermae - monocot leaves, ammophila TS xerophyte.

Prepared slide, angiospermae - anther and pollen development, lilium anthers TS mature pollen.

Prepared slide, coniferophyta (conifers) pinus 'E' stem showing xylem tubes.

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.

The complete package! This whole class set contains one Atomic structure Demonstration kit and eight Atomic Structure Student Kits, along with lesson plan/working sheet which has been developed together with science teachers; use it for studying activities, for tips and guidance or as tests for the students.

Student version spare particles, consisting of 30 protons, 30 electrons and 30 neutrons.

Economical clear acrylic burette, white graduations. TPX/Teflon stopcock.

Economical clear acrylic burette, white graduations. TPX/Teflon stopcock.

A clamp consisting of two plastic coated spring clips mounted 50 mm apart on stainless steel plate with rod. Dimensions 150 x 8 mm (L x Diameter).

Economical die cast metal burette holder with integral boss. Simple clamping action for use with one burette.

Economical die cast metal burette holder with integral boss. Simple clamping action for use with two burettes.

Strong burette holder with alloy cast jaws with plastic ends to clamp single burette. Suitable for burettes up to 100 mL.

Hardwood complete with base and rod. All parts are interchangeable. Burette clamps are cork lined.

A one piece clamp moulded from acetal homopolymer to hold a 50 mL burette. Suitable for 12 mm diameter retort rods only.

Polypropylene.

A pattern unit comprising high strength alloy casting with plastic jaws. Suitable for all burettes up to 100 mL capacity.

Glass stopcock Class A with blue graduations.

Complies with ISO 385. Graduations in white enamel for increased visibility with dark solutions. Grease-free interchangeable PTFE key with 1.5 mm bore. 0.1 mL graduations.

Hardwood complete with base and rod. All parts are interchangeable. Funnel holder is slotted.

To BS 846 Class B, permanent amber stain graduations.

This Class B burette is made from precision bore borosilicate glass for improved accuracy along the entire length. It has an interchangeable PTFE stopcock and a replaceable glass jet. This burette has blue graduations every 0.1 mL and has a tolerance of +/- 0.1 mL. Manufactured in accordance with BS EN ISO 385: 2005.

Spare 50 mL tube with 0.1 mL graduations. For BU03765.

Spare stopcock and jet. For BU03765.

Spare jet for BU03765.

Class B burette with PTFE stopcocks and white 0.1 mL graduations.

Class B burette with PTFE stopcocks and black 0.1 mL graduations.

Class B burette with glass stopcock and white 0.1 mL graduations.

Resistant to most chemicals and stable from 40 °C to 200 °C.

To BS 846. Class B with permanent blue graduation.

To BS 846 Class B. Blue graduations.

White enamel back, PTFE stopcock, blue graduations.

To BS 846 Class B. Amber graduations.

With 'Rotaflo' stopcock and porosity 'O' sintered disc. Stopcock bore 3 mm. Socket 19/26. Dimensions (L x Diameter): 300 x 20mm.

A mixture of cyan, magenta and yellow inks which appears black when combined but separates out into bright constituent colours when spotted on chromatography card and separated using solvent, (water) or by electrophoresis. Provides sufficient for approximately 500 ink spots.

An ink which uses isopropyl alcohol, instead of water, as solvent, so it dries by absorption instead of evaporation. When paper with Quink becomes wet, the ink will run into its separate components. The bottles have low centre of gravity to reduce the risk of tipping over. Supplied in 57 mL bottle.

Scarlet chromatography ink

Green chromatography ink

Blue/Black chromatography ink

Supplied as box of 100 sheets.

Supplied as box of 100 sheets.

Pattern 'CRL'. Eleven 3mm wide slots. Supplied as box of 100 sheets.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.