T W O Y E A R S I N I N N a O H S E R V I C E without lubrication . . . without freezing
And that's just one typical report on Lab-Crest stopcock-equipped Lab glassware. The big advantage of this revolutionary stopcock is N O GREASE! And by eliminating stopcock lubrication, LabCrest gets at the very heart of most stopcock problems. Add it up yourself! There's never any need for cleaning or greasing stopcocks . . . no chance of leakage or freezing. You can throw your stopcock pullers away. Dry deposits can't ruin titration r e s u l t s . A n d a s v i t a l as t h e s e
Lab-Crest features are in caustic service, they're just as valuable in solvent service, vitamin Bx determinations, chromatography, and other critical use.
seal on burettes, separatory funnels, chromatography columns— wherever convenience, accuracy, and freedom from contamination are important.
Lab-Crest's unique locking nut is another feature. In everyday use handling pressures greater than 60 psi in pilot plant installations, there's no chance of a plug popping under a heavy column of sulfuric acid.
Write for your copy of Catalog 80C100. Fischer & P o r t e r Co., 1559 C o u n t y L i n e Road, Hatboro, Pa.
All these advantages can be yours. Look for the Lab-Crest Circle No. 48 on Readers' Service Card
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ANALYTICAL CHEMISTRY
Lab-Crest
