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W i t h a Barnstead W a t e r Still in your own plant or laboratory you are assured of a constant supply o f the purest distilled water obtainable — in its freshest, safest state. For Barnstead Distilled W a t e r is free f r o m organic and inorganic solids, volatile impurities and bacteria. Its unvarying purity makes it a constant t h a t chemistry can rely on t o achieve laboratory perfection in process p r o d u c t i o n . There are Barnstead W a t e r Stills f o r all needs. They operate on Steam, G a s o r Electricity —
deliver
f r o m !/2 t o 500 gallons of consistently pure distil late per hour. Easy t o install, clean, operate and maintain, they are built f o r l o n g , safe, dependable, economical service. For
more
than
sixty
years,
modern,
compact
Barnstead Stills have p r o v i d e d a t low cost the priceless quality o f purity i n water — so basically essential t o the world o f chemistry.
Kariistead MÊLJ
STILL & STERILIZER CO. Inc.
19 LANESVILLE TERRACE, FOREST HILLS, BOSTON 31, MASSACHUSETTS 2074
CHEMICAL
AND
ENGINEERING
NEWS
