THE ULTIMATE STOPCOCK
has a built-in needle valve
AU the advantages of this famous Teflon°pIug stopcock· . . . all the advantages of a fine, high quality needle valve. You get fantastic control over liquid flow through burets, separatory funnels, chromatographic columns . . . with no fuss, no mess. Stopcock and needle valve never need grease— never freeze—never leak. Put the Kimax* needle valve stopcock to work right now! Two sizes replace Kimax regular bore Teflon plugs, sizes 1, lVi, 2, 3, and 4. And be sure to specify it on every important piece of laboratory glassware you order from Fischer & Porter's complete labware line. Write for literature. Fischer & Porter Company, 1511 County Line Road, Warminster, Pa.
Fp
Manufactured by Kimble Glass Co. under licenses granted by Fischer & Porter Co. • Reg. T . M . Kimble Glass Co. o R e g . T . M . E. I. D u P o n t Circle No. 53 on Readers' Service Card
