NEW PRODUCTS
THROW-AWAY CARTRIDGE
DE-IONIZER PRODUCES CHEMICALLY-
PURE WATER
the fastest, most accurate, most dependable laboratory apparatus you can use for determination of C02-02-C0-N2 in ultra-micro samples is the
RIGHT FROM THE TAP
Thermal precipitator, Model MIC 501, collects particles from air directly on a glass cover dish, electron micro scope grids, or any other thin sub strate. The air is sampled at a rate of 5 to 6 cc./min. The small quantity of heat used does not damage parti cles. Oil droplets and tobacco smoke, for instance, are readily collected. Numinco, Apollo, Pa. 15613. 418
NATELSON MICROGASOMETER A n d n o w . . . α new Gas Injec tor attachment can be used with any standard Gas Chromatograph for complete gas analysis
INSTANT PURIFIED WATER O p e n the tap o r unclamp the tubing — you get chemically-pure water at once. R u n only as much as you need — a few ounces o r a bottle-full.
CHEMICALLY EQUIVALENT TO TRIPLE-DISTILLED Thin Layer Chromatography Equipment
(e.g Pcrki'n Clmer Model 8201.
Complete thin layer chromatography kits featuring precoated plates are available. Directions and necessary material for typical separations of known compounds are included. Cus tom Service Chemicals, P. 0 . Box 566, Wilmington, Del. 419
N o t e the purity of effluent shown in speci fications below. De-ionized water is ac cepted by U S Pharmacopoeia as equiva lent for all but injection solutions.
USED ONLY WHEN NEEDED W i t h this Cartridge De-Ionizer, your pure water is actually " o n t a p . " You can come back for more at any time — it's always available. Flow rate is generous — 5 g p h .
CONVENIENT— EASY TO INSTALL You snap the Cartridge into the Wall Bracket, o r clamp it into the Mounting Fixture. T h e resin changes color as ex hausted — a clear line shows h o w much capacity remains. Write for Bulletin CD161 giving full details.
Ask VCIUI labur.ituiv ΜψμΙν ( I I M I I U
for a demonstration of this easily learned technique...or write t o :
Scientific In dust ries INC. f M. Dept. AC864, 220-05 97th AVENUE QUEENS VILLAGE 29, NEW YORK Circle No. 149 on Readers' Service Card 102 A
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ANALYTICAL CHEMISTRY
| : i •
Speegrav is a direct reading instrument for specific gravity determination of urine and other body fluids. Less than 10 ml. of sample are re quired and 50-60 determinations can be made in an hour. These photo electric determinations are presented I with an accuracy of ±0.0005 in the range of 1.000 to 1.070. Aloe Sci entific, 1831 Olive St., St. Louis, Mo. 63103. 420
UNIVERSAL MODEL RESEARCH MODEL Removes all ionizable Removes all ionizable solids including silica solids, except silica and and CO2. Average in ef COi. Suitable for general fluent less than 0.5 ppm pure water needs. total solids. Capacity, 1000 grains as Capacity, 500 grains as CaCOa. CaC0 3 . Flow Rate, 5 gph max. Flow Rate, 5 gph max. Price, $9.75 Price, $12.50 WALL BRACKET with slip-on connection to water $7.50 MOUNTING FIXTURE, clamp-in type for lineti2.no
Order from Your Laboratory Supply House
: ILLINOIS WATER TREATMENT CO. 8 4 0 Cedar St., Rockford, III. | Circle No. 48 on Readers' Service Card
