Can you prepare 1000 ml. 1/10 Ν Sodium Hydroxide for $2.— in 2 minutes ?
ACCÙLUTE for rapid preparation of standardized volumetric solutions. Saves time, dollars and errors in thousands of laboratories. Complete range of concentrates in stock, orders shipped same day as received. Acculute is sealed in convenient polyethylene or glass ampoules and can be kept indefinitely. Sample price list: Acid Hydrochloric
1 Ν $2.25
Iodine
N / 1 0 $2.25
Sodium Thiosulphate. . . N / 1 0 $ 2 . 0 0 " At leading laboratory supply houses across U.S.A. a n d Canada.
For complete price list write to
ANACHEMIA C
H
E
M
I
C
A
L
S
L T D .
CHAMPLAIN, N.Y. Circle No. 117 on Readers' Service Card
132 A
·
ANALYTICAL CHEMISTRY
NEW PRODUCTS action rates can be measured using this system. Bulletin DSP-100 is available. Delmar Scientific Laboratories, 317 Madison St., Maywood, 111. 432
Melting Viscosity Tester conforms to the American Standard ASTM D 1238, ISO 317. It is used for measuring the melting viscosity or the quantity discharged of thermoplastics, es pecially polyethylene of the powdered, granulated, or prepressed type, re spectively, under certain pressure and temperature conditions. Tests not under standardized conditions can also be conducted; at increased load or at temperatures up to 250° C. William J. Hacker & Co., Inc., P. 0. Box 646, West Caldwell, N. J. 433
UV Analyzer Ratio Recording Ultraviolet Ana lyzer Model 254 with a. Series 1000 Automatic Fraction Collector makes it possible to continuously analyze frac tions absorbing between 254 and 340 πίμ. Interchangeable sharp cut off filters select any wavelength; ratio signal compensates for buffer systems with significant absorption. Teflon flow cells with quartz windows coupled with cold cathode UV lamp source give versatility with any make fraction collector. Ratio amplifier provides built-in integrator, and event marker. Wide trace recorder has full 6 in. chart width. Single or double tandem diverter for dual column flow offers four wavelength recordings at 254, 260, 280, and 340 ταμ. The Model 254 analyzes fats, carbohydrates, proteins, nucleic acids, vitamins, serum, dyes, steroids, enzymes, blood, hormones, plasma, bile amines, aromatics, drugs, glycogens, nucleosides, and biologicals. Chroma tography Corp. of America, 7736 Lake St., Morton Grove, 111. 434
MATHESfN AUTOMATfC REGULATOR for Lecture Bottles T h i s n e w s i n g l e stjage regulator iWas designed, for accurate control of delivery pressure o | gases from lecture bottles. Design permits neg ligible loss pf gas in regulator, a feature Ifchat is especially importantlwhen using srnall. lecture bottle quantities of gas. Idealjfor portable 1 fuel cell use. permits accurate control of feises to cell : yet is c o m p a | t and ligbi in weight. T i e N o . 36 Regula tor, illustrated', permits read ing of tank pressures aï all times. Alsjo available |n a single gaufee model, regoramended fcjr liquefied |g^sea. Write for jour 1962 câjalog, " M a t h e s t e Comprjjlsed Gases and l i a s Regulaflrs' Write for catalog
THE MATHESON COMPANY, INC. East Rutherford, N. J.; Joliet, III.; Newark, Calif. MATHKSON OF CANAfJA. Ltd-, Wliilhy. Ontario
