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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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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
Simple & clear keyboard operation provides auto 0% & 100% adjustment, Error free T-A transformation, faster setting and direct concentration readout functions.
Imported Tungsten (W) Lamp, long service life.
Spacious sample compartment, suitable for various dimensions optical path rectangular cells(100mm max).
OptiMelt provides a fast and accurate means of automatically determining the melting points and melting ranges of chemical substances. With microprocessor controlled temperature ramping, a built-in digital camera, and a selling price that is half that of competing models, OptiMelt offers the best value of any commercially available melting point apparatus.
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!
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