SURE ITS PURE! BUT WHO NEEDS WATER THIS PURE? It's essential if you're using AA or HPLC. Or tissue culture media. Or enzymology. But even if you're not, it doesn't make sense to risk your results on the undependable purity of distilled water . . . not when Milli-Q Reagent Grade Water is vastly superior, costs less, and virtually eliminates maintenance. Water quality from a still deteriorates without periodic cleaning and scale removal. And distilled water routinely contains chloramines, organics and significant levels of heavy metals. But Milli-Q Reagent Grade Water consistently exceeds the strictest published standards — on demand, at your point-of-
use. And an in-line resistivity meter provides a continuous visual check on output quality, so there's never any doubt. Millipore systems are also backed by our complete network of support centers and field service engineers. For more information on our full line of water systems, write Millipore Corporation, Water Systems Div., Bedford, MA 01730. Or call toll-free. In the U.S.A., call 800-2251380 (in Mass., 617-2759200). In Canada, call 800-268-4881.
CIRCLE 144 ON READER SERVICE CARD
MILLIPORE ANALYTICAL CHEMISTRY, VOL. 50. NO. 12. OCTOBER 1978 · 1121 A
