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Manufactured in the U.K., the QWS4 combines performance and reliability with exceptional value for money. This new water still incorporates a number of operational and safety features that make this still the ideal choice for your laboratory. • Output capacity 4Litres/Hour pyrogen free* single distilled water • Distillate quality complies with European Pharmacopoeia for Purified Water & A.S.T.M. Type 4. • Pyrex® glass boiler and condenser minimise potential contamination of distillate from the leaching effect of distilled water on metal components • Distillate pH5.0-6.5 • Distillate conductivity 3.0-5.0uS/cm • 3kW chromium plated heating element with 2 independent re-settable thermostats protect the still in the event of water supply failure • Easy to clean. No glassware dismantling is required • Available in 230V, 220V and 120V versions. Output capacity of 120V model is around 2.4Litres/Hour • Can wall or bench mounted • CE marked by independent testing agency • Supplied with an instruction/operating manual • All of the major components are available as spare parts *We recommend that the distillate is tested before use
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Gentian violet slightly stains the nuclei of the leucocytes. The blood specimen is diluted 1:20 in a WBC pipette with the diluting fluid and the cells are counted under low power of the microscope by using a counting chamber. The number of cells in undiluted blood is reported per cumm (µl) of whole blood.
The Home LED Microscope is an excellent value and wonderful choice for beginners and students of all ages! With this home microscope, you’ll get the same quality and features as other fine high-school-level microscopes, but at a much more affordable price. Its ease-of-use and high-quality components make it a great choice for students, science-lovers, and hobbyists of all ages!
7- inch color touch- screen
Direct concentration display (Don’t cover FP-I640)
Automatic calculation of correlation coefficient (Don’t cover FP-I640)
Pre-selection of flame sizes
Flameout protection device
Measuring range changing
Concentration units selectable
Multilingual user interface
Air compressor provide
Haemometers are used for the determination of blood’s content of haemoglobin. The Marienfeld Superior haemometer according to Sahli is supplied as complete set consisting of:
polystyrene support with 2 coloured rods and opal glass plate
comparator tube
haemoglobin pipette 20 μl acc. to Sahli
silicone tubing of approx. 16 cm length
white mouthpiece
dropping pipette with rubber teat
stirring rod
acid vial
cleaning brush
directions for use
without CE – mark, only for sale and application outside EC
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