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NEW PRODUCTS

HOW YOU CAN B E A

Chances are you can substantially reduce the high cost of the epoxy resins you use —without reducing quality. Piccolastic A-5® resin extends epoxies 20 to 30% (at half the RMC) and improves them for many applications. One improvement, for example, is greatly increased pot life, better control of exotherm and more warning before gellation. Beat epoxy's high cost by finding out about the advantages of extending epoxy with Piccolastic A-5 resin. Mail the cou­ pon below for latest technical informa­ tion, including several formulations.

NEW LOW COST

SUPER-INSULATED products from Hofman's complete line* of CRYOGENIC equipment!

HERO If Your Company Uses Epoxy (or would like to) ••••••*•****•

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Electrophoresis system shown can separate and quantitate proteins in eight samples of serum in 9 0 minutes. It employs the thin-film agar tech­ nique which substitutes ultraviolet light absorption for time-consuming protein staining. Called the Spectrophor I, the system separates hemo­ globins, enzymes, and special pro­ teins such as lipo or glyco proteins. Spinal fluids and urines can be ana­ lyzed directly without prior concentra­ tion. Bausch & Lomb Inc., Rochester 2, Ν. Υ. 425

PENNSYLVANIA INDUSTRIAL CHEMICAL CORPORATION

PLASTIC DEWAR FLASK • 25% more holding time than steel! • Priced below the cost of steel! High-impact-proof, all thermo-set plastic con­ struction. Transfers and stores liquid air, oxygen, nitrogen, argon with highest thermal efficiency. 10~5mm Hg hard vacuum between super-insulated double walls. Low cool-down loss. A lab economizer with the strength of steel. Below the price of steell Available in diameters of 3 to 12 inches; lengths of 5 to 26 inches. Write for Bulletin #3022

RUGGED NITROGEN REFRIGERATOR P I C C O , 182 State Street, Clairton, Penn. Please send PICCO Technical Bulletin PPN-038 on "Piccolastic A-5-Modifier for Epoxy Resins"

Name Position Company Type of business Address

City

State

Circle No. 197 on Readers' Service Card 142 A

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ANALYTICAL CHEMISTRY

Tritium air monitor, the JLI Model 755 TRITON, is designed to eliminate the difficulties and inaccuracies us­ ually associated with monitoring gase­ ous t r i t i u m , especially in water. It achieves high, inherent sensitivity with a large volume ionization cham­ ber allowing the use of a stable hybrid transistorized amplifier. The effect of background gamma radia­ tion is eliminated with a second ion­ ization chamber of similar dimensions connected in opposition to current flow in the tritium ionization cham­ ber. The instrument may also be used as a low level gamma area moni­ tor by simply switching the two ion­ ization chambers such that the pri­ mary currents are additive. William H. Johnston Laboratories, 3 6 1 7 Wood­ land Ave., Baltimore 15, Md. 426

• Withstands roughest handling! • Stores contents at —320 F ! Super-insulated Hofman Nitref transports, stores biological tissues with maximum safety, minimum heat loss. Ideal for small quantities of liquid nitrogen, oxygen, argon. Available in heavy-duty stainless steel or aluminum. Sup­ plied with six 1-inch diameter, low heat inleak canisters. Specify if ordering for oxygen service. Available in 10 and 40 liter sizes. Write for Bulletin #3023 * Hofman's complete line includes liquefied gas transport and pumper trucks, high-pressure oxygen/nitrogen vaporizers, high-vacuum pumping stations and many other types of specialized cryogenic equipment.

Hofman LABORATORIES

THE COMPLETE LINE OF CRYOGENIC EQUIPMENT

225 PARKHURST ST., NEWARK, N.J. West Coast Facility: Paul Chemical Co., 6750 Caballero Blvd., Buena Park, Cal. Circle No. 204 on Readers' Service Card