THERMOLYNE CORPORATION - Analytical Chemistry (ACS

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NEW PRODUCTS

GC

now, a completely automatic

SUPPORT now in

10

llaboratory furnace THERMOLYNE

MESH

CUTS

Spinner flask is designed for growing cells in suspension. Cells are sus­ pended by the rotation of the Teflon covered magnetic spinning bar at­ tached to a stainless steel fishing swivel. Position of t h e stirrer bar is adjustable. Two flasks of 2 5 0 - and 500-ml. capacity can be centrifuged, and a 1000-ml. flask is also available. Kontes Glass Co. 409

ANAKROM ¥op 3 0 % LESS COST ANAKROM is the first flux-calcined diatomaceous earth support offered in 10-mesh cuts for achieving higher efficiencies in gas chromatographic analysis. It is available from from 50/60 to 160/170 mesh or in special blends tailored to your specifications. Yet Anakrom sells for up to 30% less than other support materials. Check and compare Anakrom types and prices . . . TYPE

PRICE (All Meshes)

ANAKROM U —Untreated ANAKROM A — Acid Washed ANAKROM AB —Acid & Alcoholic Base Washed . . . . ANAKROM ABS —Siliconized

$19/Vi lb. $26/V4 lb. $ 3 2 / % lb. $ 3 7 / % lb.

FREE SAMPLE furnished on letterhead request.

ANALABS ANALYTICAL ENGINEERING LABORATORIES, INC. P.O. Box 5215 · Hamden 18, Conn. · ATwater 8-3400 SPECIALISTS IN CHROMATOGRAPHIC ACCESSORY MATERIALS: SUPPORTS; STATIONARY PHASES; PRECOATED SUPPORTS; PRETESTED AND CONDI­ TIONED PACKED COLUMNS; HAMILTON SYRINGES

THERMOLYNE TYPE 2 0 0 0 Just d i a l desired temperature. This

Thermowell contour heaters for round bottom flasks come in 13 sizes from 10 to 5000 ml. and provide tempera­ tures up to 6 0 0 ° C. - They operate on 120 volt a.c. and draw no more than 950 watts for the 5000-ml. size. The 10-ml. size takes 5 0 watts. Prices range from $ 9 to $ 3 6 . Laboratory Craftsmen. 410

electric furnace, specifically for laboratory

designed

use, automatically

holds preset temperatures within close limits b y means o f a potentiometric control system. Practically immune to vibration, dust, dirt to give long, trouble-free service. Rigid, b r a c e d construction . . . long-life heating elements e m b e d d e d in interchange­ a b l e plates that give fast, even heat distribution. Chamber surrounded

Warburg Flasks

by h i g h - g r a d e , multiple-type insula­

Newly designed Warburg flasks have an alkali trough fused into the vessel wall and connected with a side arm. This permits unrestricted shaking, ac­ cording to the company, in contrast to conventional manometric vessels that contain an alkali well fused directly to the flask bottom. The shape of the vessel is altered to a flat trough, in­ creasing the surface area of alkali ex­ posed to gas and greatly expediting

Circle No. 182 on Readers' Service Card

VOL.

tion. Chamber size 4 " χ 3VA" Χ 9 " . O p e r a t i n g temperatures to 1050°F continuous, 1900°F intermittent. 115 a n d 2 3 0 volts. Price complete, $ 2 4 7 . 5 0 . W r i t e for literature a n d name o f nearest d e a l e r .

THERMOLYNE CORPORATION (Formerly Thermo Electric Mfg. Co.) 478 Huff St., D u b u q u e , Iowa Circle No.113on Readers' Service Card 33, NO. 12, NOVEMBER 1961 • 125

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