Pestiquality MeOH
Don't inventory all those grades of a solvent when ONE from B&J will do the j o b . . . better • Fewer bottles m e a n greater safety — fewer hazards. • Fewer bottles mean less storage s p a c e — more lab space. • Fewer bottles m e a n lower inventory costs. You get the best when you order high purity solvents from Burdick & Jackson Laboratories, Inc. All solvents are available in either gallons or quarts. Send for BJ-25.
BURDICK & JACKSON LABORATORIES, INC. MUSKEGON, MICHIGAN 49442
(616)726-3171
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ULTRAPURE chemicals
When you simply can't tolerate impurities or uncertainties in your reagents Over 100 of the purest reagents and chemicals available anywhere in the world. Every product is accompanied by a detailed Certificate of Analysis of the actual lot supplied. In terms of spectrochemically detectable impurities, ULTREX products are typically 99.995% to 99.99995% pure. And the extremely low content of all impurities (often at the parts per billion level) satisfies the most rigid use requirements. Whenever your requirements for purity and product definition are stringent, ULTREX ultrapures can indeed insure against loss of time, effort, and other expenses. Consider ULTREX when you just can't afford to gamble with impurities or uncertainties.
"Beautiful catalog for reference and purchasing? R.L. Walter The Aerospace Corporation Los Angeles, Calif.
ULTREX Write for new ULTREX ultrapure Reagent brochure.
J. T. Baker Chemical Co. Phillipsburg, N.J. 08865 201 859-5411
JXBaker Use reader service number for your free copy.
CHEMICALS
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ANALYTICAL CHEMISTRY, VOL. 50, NO. 3, MARCH 1978 · 383 A
