MANUFACTURERS' LITERATURE
BEL-ART PLASTIC
for
safety products TîetoÎ WITH SNAP-ON CAP à
Eye injuries treated on the spot . . . fast and effectively. Just apply pressure on flexible bottle. Can be used in stand ing or supine position. Completely redesigned . . . a captive snap-on cap keeps cup clean and ready for use. The side air-vent, below the cup, acts as a valve for air re-fill of free space in the bottle. This prevents draw-back of contaminated wash into bottle. In two sizes . . . 16 oz. and 32 oz.
at your
laboratory
supply
Send for our c a t a l o g supplement
house.
A-4
Balances. High sensitivity, precision analytical balances feature digital readout from 0.0000 to 1.1000 gram. Weights above 1 gram to a maximum of 200 grams can be obtained with any standard set of weights. Request liter ature on Models 340-D and 640-D. Voland Corp., 27 Centre Ave., New Ro chelle, Ν. Υ. 10802 625
Electrophoresis. Procedure for sepa ration and staining of serum glycopro teins is the subject of Technical Bulle tin 143. E-C Apparatus Corp., 222 S. 40 St., Philadelphia, Pa. 19104 627
listing
many NEW items . . . ;'ust off the press.' Write Dept.
Thermocouple Kit. This kit contains all components necessary to construct thermocouple probes for cryogenic through high temperature service. Micro-miniature, standard, and heavy duty thermocouples can be built. Re quest Product Bulletin 695. Omega Engineering, Inc., P. 0. Box 47, Springdale, Conn. 06879 624
Chronoamperometry. Application Data Sheet EC-8109 describes a potential-sweep chronoamperometry method which uses the Electroscan 30 to detect fumaric acid that has been added to foods as an acidulant. Beckman Scientific and Process Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 626
I
Avoid delay—hang this half gallon bottle within easy reach above eye level. Gravity feed in sures that eye is cleaned with wash at a fixed pressure. Impossible for high pressure j e t to strike the eye. Available
Fluoride Analysis. Specifications for the Anafluor Continuous Fluoride Ana lyzer are included in an illustrated 6-page brochure, Specification 17S4000. Fischer & Porter Co., 142 Jacksonville Rd., Warminster, Pa. 18974 622
Latest Scientific Facts/ 47™ EDITION
CRC
HANDBOOK OF
CHEMISTRY AND
PHYSICS
Infrared Spectrometry. Internal re flection spectrometry (ATR) attach ment, Model 7, is discussed in Data Sheet No. 18. Wilks Scientific Corp., South Norwalk, Conn. 06854 623
POLYETHYLENE EYE WASH BOTTLE
Polyethylene GRAVITY EYE W A S H
Micro-Volume Gas Valves. Microvolume valves for sampling and switch ing operations in gas chromatography are described in 4-page Bulletin 6602. Applications, illustrations, price list, and ordering instructions are included. Carle Instruments, Inc., 532 S. Rose St., Anaheim, Calif. 92805 621
for your FREE copy.
BEL-ART PRODUCTS PEQUANNOCK, N. J. 0 7 4 4 0 Circle No. 111 on Readers' Service Card
Infrared Spectrometry. Data Sheet 017 lists prices for the company's NaGl and KBr infrared windows. Harshaw Chemical Co., 1945 E. 97 St., Cleve land, Ohio 44106 628
l
'»-iVsias
Make sure you have ready access to t h i s v a l u a b l e r e f e r e n c e ! Here is t h e latest e d i t i o n of t h e w o r l d ' s " m o s t r e a c h e d f o r " scientific s o u r c e book for over half-a-cent u r y ! This b r a n d new v o l u m e of t h e c o m p l e t e l y revised and ex p a n d e d h a n d b o o k brings y o u : • Over 1800 pages of u p d a t e d c h e m i s t r y , physics a n d m a t h e matical tables! •
110 newly added pages!
•
Up-to-date data o n : G r a v i m e t r i c F a c t o r s — Ele mentary particles—Magnetic Materials — Electron A f f i n i t i e s — H e a t Capacity of A q u e ous S o l u t i o n s — D i m e n s i o n less Groups . . . a n d M u c h More:
Get your storehouse tion
copy
of
this
of scientific
valuable Informa
now!
Cat. No. AC 741
$17.50 each
(Outside U.S.A. add 50c)
CRC THE
C H E M I C A L R U B B E R CO. 2310 Superior Avenue C l e v e l a n d , Ohio 4 4 1 1 4
Circle No. 33 on Readers' Service Card V O L . 3 9 , N O . 4 , APRIL 1 9 6 7
·
155
A