The HANOVIA ANALYTIC MODEL QUARTZ LAMP

METAL FILTER HOLDER # 7 4 4 8

A powerful 325 watt ver­satile unit. 9" χ 12" lamp housing accommodates one or two 6Ά" sq. fil­ters. High pressure quartz mercury-vapor lamp pro­vides ultraviolet radiation in near middle and far re­gions. Flexible .. . direc­tional adjustment affords full light beam intensity toward any point.

115 volts, 60 cycles, A.C. WRITE FOR COMPLETE DA TA

on these and other Hanovia fused quartz lamps for laboratory application.

• ENGELHARD HANOVIA. INC. · HANOVIA LAMP DIVISION

100 CHESTNUT STREET, NEWARK, NEW JERSEY

Circle No. 178 on Readers' Service Card

FLUID & GAS PRESSURE TANKS STAINLESS & CARBON STEEL TANKS

(GOVERNMENT SURPLUS BARGAINS) Steel tanks for the handl ing, storage and t ransportat ion of gases, bever­ages, fue ls , hydraul ic f lu ids and other l iqu ids . Stainless steel tanks for corrosive ac ids and gases.

IDEAL FOR:

ACCELERATED FADING

A N D BLEACHING TESTS.

FLUORESCENCE

ANALYSIS

V ITAMIN D STUDIES

LUMINESCENT

PHOTOGRAPHY

PHOTOCHEMICAL

REACTIONS

J-1 P R E S S U R E T A N K Stain­less steel , surp lus aircraft oxygen tank. 48" l ong , 24" d ia. Rated for 400 P.S.I, work ing pressure, 18,000 cu . i n . vo l . , 77.9 ga l . capacity. %" pipe thread f i t t ing at each end . New con­d i t i on . Sh ipp ing weight 247 lbs . F.O.B. Ch icago. No. AB83Z $99 5 0

G-1 T A N K Sta in less s tee l . Capacity 21 OOcu. i n . (9 gals.) 450

P.S.I . %" pipe thread port at each end . 24" l ong , 12* d ia. Shipping weight 19 lbs. F.O.B. Chicago. (Two for $27.00.) ΝΟ.ΑΒ63 Each $149 5

N O N - S H A T T E R A B L E C O z C Y L I N D E R Th is type of pres­sure bott le was used by the A rmed Forces for inf lat ing life raf ts . 18%" l o n g , 3%" d ia . Has y2" pipe thread opening at one end . Capacity 2.98 lbs . of C O Î — a t 1800 P.S.I . Sh ipp ing weight 10 lbs . F.O.B. Ch icago . No. AB303 $25 0

F R E O N T A N K Capacity 22 oz. of Fréon F22, 6 cc Methyl A l c o h o l . 18%" l ong , 2" d ia. %" pipe thread opening at one end . Equipped wi th brass valve. Shipp ing weight 3 lbs . F.O.B. Ch icago. (Six for $8.00). No . AB834 Each $ 1 5 0

rv i/

D - 2 A I R T A N K Carbon steel . Capacity 500 c u . i n . (approx.2 gals.) 450 P.S.I . X " pipe thread port at each end . 24" long , 6" d ia . Postpa id . (Two for $8.50). No . AB391 Each $4 9 5

CORNELIUS HIGH PRESSURE (1500-2000 P.S.I.)

A IR COMPRESSOR

Three cyl inder, 3-stage compressor , c o m p l e t e w i th 27

volt , D.C. 20 amp. motor , wi th f a n . Rated 1500 P.S.I , cont inuous duty, 2000 P.S. I , in termit tent . Pressure switch in base. A s released by A i r Force, in used, serviceable cond i ­t i on . Covered by our 30 day G U A R ­ANTEE. 1 1 % " l ong , 7" h igh , 9" w ide . Shipp ing weight 12 lbs. F.O.B. Ch i ­cago. Limited quant i ty .

No . AB549 $35 0 0

Write today for FREE CATALOG of other EQUIPMENT BARGAINS I

GROBAN SUPPLY COMPANY U39 SOUTH WABASH AVE., DEPT. AB-3, CHICAGO 5, ILL., WEbster 9-3793

Circle No. 57 on Readers' Service Card

Circle Να. 163 on Readers' Service Card

Oxygen Bomb Sulfur Apparatus For rap id combustions w i t h oxygen in a sealed bomb, p repara to ry to determin ing Sulfur, Halo­gens, Arsenic, etc., in solid or l iqu id samples. Recommended especial ly for :

Sulfur in Petroleum Products ASTMD129-58 Sulfur in Coal and Coke ASTMD271-58 Chlor ine in Lubr icat ing Oils and Greases ASTM D808-57T

Consists of a Parr self-sealing oxygen bomb w i t h v/ater ba th , f i l l i ng connect ion, igni t ion unit and al l accessories.

Order from any Parr Dealer, or write direct for Spec. 1900

P A R R I N S T R U M E N T G O . MOLINE, ILLINOIS

Circle No. 152 on Readers' Service Cam

VOL. 33 , N O . 3, MARCH 1961 · 1 5 3 A

WILL CORPORATION a n d subs id iar i e s

• Rochester 3, N.Y. · New York 52, N.Y. · Buffalo 5, N.Y. • Atlanta 25, Ga. · Baltimore 24, Md. · So. Charleston 3, W. Va.