28A
ANALYTICAL
CHEMISTRY
Thermostatic Hot Plates
Klett.... Photometers
Compact— 4 1 / Î " in diameter and 2" high. Light W e i g h t Weighs VA lbs. Thermostatic controlSurface temperature up to 550° F. Available in 3 models— (1) as shown
$13.50
(2) Hot plate only $ 9 . 3 5 (3) Hot plate with clamp attached $10.45
• Να. 900-3
Write Dept. AC or phone SHerwood 2-1123 for complete information. •
GENERAL
LABORATORY SUPPLY COMPANY 320 * \ U R K [ - : T
S I K FIE T.
l'A I i : H S( i s .
.;,
SiV-
lf-KSl'>
For determining viscosity of
No. 2070
GASES, LIQUIDS, OILS, Designed for the rapid and accurate d e t e r m i n a t i o n of thiamin, riboflavin, and other substance* which fluoresce in solution. The sensitivity and sta bility are such that it has been found particu larly useful in determining very small amounts of these substances.
PLASTICS, SYRUPS, VISCOUS TARS, etc.
HOEPPLER
KLETT SCIENTIFIC PRODUCTS ELECTROPHORESIS APPARATUS · BIO-COLORIMETERS GLASS ABSORPTION CELLS · COLORIMETER NEPHELOMETERS · GLASS STANDARDS · KLETT REAGENTS
Klett
Manufacturing Co.
179 E A S T 87.TH S T R E E T , N E W Y O R K , Ν . Υ.
VISCOSIMETER
T h e H o e p p l e r Viscosimeter is so sensitive that the difference in viscosity between distilled and tap water can be measured. Direct reading in centipoises (or centistokes). From 0.01 to 1,000,000 centipoises. Accuracy, 0 . 1 % to 0 . 5 % . Falling time of ball multiplied by o t h e r factors shows absolute viscosity. Small sample (30 cc) FALLING BALL required. Results consistent and reproducible. PRINCIPLE O r d e r direct o r from leading laboratory supply dealers. Write today for Bulletin HV-303. Manufactured by FISH-SCHURMAN CORP. 230 E. 45th St., New York 17, Ν. Υ.
Fish-Schurmαn
