BURRELL CORPORATION

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NEW PRODUCTS cultivated in a petri dish. Products.

Scientific P-35

"For Scientists Everywhere"

BURRELL

C a b i n e t Dehydrators

LABORATORY FURNACE variable temperature range to 2 7 5 0 ° f

A versatile laboratory fur­ nace for reliable operation from the lowest to the high­ est temperatures. From 600° F. to 2000° F., use for ashing, drawing, ig­ niting and tempering, above 2000° F., for sintering, melt­ ing, clinkering, fusing and high-speed hardening.

Disposable cartridge type units in transparent plastic form are designed for static air drying and purifying ap­ plications. Fastened with snap-on clips, they weigh as little as 0.06 lb., are as small as 2.5 by 0.75 inches, and have

moisture capacity of 10 to 35 grains. Said to be suitable for removing water, oil, and fuel vapors from air, nitrogen, oxygen, helium, and other gases. Can be used at differential pressures to 20 p.s.i. and temperatures between —65° and +200° F. Saturated air capacities range from 864 to 3024 cu. in. Robbins Aviation, Inc. P-36 A u t o m a t i c Pipet

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AUTOMATIC TEMPERATURE CONTROL

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SPACIOUS ACCESSIBLE HEATING CHAMBER

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RAPID HEATING M I N I M U M HEAT L O S S

Linson automatic pipet operates by means of a piston pushing a fluid fed into an enclosed cylinder from a stock bottle. The plastic piston and piston chamber are calibrated so that each time the piston traverses the chamber a specific amount of fluid is dispensed.

•ft OPENS FROM FRONT FOR QUICK SERVICING

BURRELL BOX-MUFFLE TYPE FURNACE, Model 30 Heating chamber 7" wide χ 8V4" deep χ 4" high. For use with 230 volt, 50-60 cycle, single phase power supply, or with automatic controller for 115 volt, 50-60 cycle, single phase. Burrell Cat. No. 3 7 - 4 4 2 $1600. F.O.B. Pittsburgh, Pa.

Ask for Bulletin No. 315

BURRELL

CORPORATION

Scientific Instruments and Laboratory Supplies 2223 FIFTH AVENUE, PITTSBURGH 19, PA.

Circle No. 44 on Readers' Service Card

144 A

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ANALYTICAL CHEMISTRY

The pipets are available in sizes from one to 50 ml. at any desired fractional increment. No special technique is re­ quired for operation, and accuracy is said to be ±0.002 ml. for pipets under 10 ml. capacity and ±0.005 ml. for larger sizes. Adjustment screw enables calibration to any fractional volume. Metal parts do not come into contact