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For measuring and sampling gas given off by aquatic plants e.g Elodea. Comprises a bulb tube graduated 0 to 150 mm into which the cut end of the shoot is inserted. A 5 ml syringe is provided at top to draw gas collected in the burette for analysis. Overall height 300 mm.

220 V,15 W, to replace day-light mirror reflector, fits into microscope body.

Low cost basic microscope for use by school children to study natural science. Its light weight makes it suitable for field work as well. Focussing is by rack and pinion movement. A 84 x 76 mm stage with disc diaphragm and slide holding clips is provided. Illumination is by plano concave mirror reflector fitted under the stage. One Huygenian eye-piece x10 and one achromatic objective x10 are provided to give a sharp image of x100 magnification.

Just the right instrument to take in the field – totally portable, lightweight and almost indestructible. Its simple design, compact size and durable metal construction make it ideal for any weather conditions. This microscope yields 40x or 100x images illuminated by the built-in prism. Threaded, spring-loaded stage clips are secure and easy to use. No gears means it’s virtually maintenance free. 10x Huygenian eyepiece with 4x or 10x achromatic objective produces a 40x or 100x image.

For rotary microtomes fabricated from fine grain special steel, heat treated and tested for microstructure, both sides wedged, supplied with back and handle