Manufactured in the U.K. the QWS4 combines performance and reliability with exceptional value for money. This water still incorporates a number of operational and safety features that make this still the ideal choice for yours laboratory. QWS4 is the only water still to feature an original high quality Pyrex® glass boiler and condenser.Features:High Quality Distillate - The QWS4 water still will produce 4litres per hour of pyrogen-free single distilled water complying to ASTM and ISO standards.Safety First - The UK manufactured chromium plated double earthed heating element is fitted with two independent re-settable thermostats to protect the still from overheating should the water supply fail.Keeping Cool - The highly efficient Pyrex® glass coil condenser ensures that the distillate is cooled ready for use.Easy Cleaning - Cleaning the still could not be simpler. Just add the cleaning solution via the funnel on the Pyrex® boiler. No glassware dismantling will be required.Specification:Distillate quality complies with European Pharmacopoeia for Purified Water & A.S.T.M. Type 4.Distillate: pH5.0-6.5.Distillate: conductivity 3.0-5.0uS/cm.Pyrex® glass boiler and condenser minimise potential contamination of distillate from the leaching effect of distilled water on metal components.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.Can be wall or bench mounted.CE marked by independent testing agency.Supplied with an instruction/operating manual.