CRA LAB
THE ALL-PURPOSE LABORATORY TIMER
DO YOU ANALYZE SULFUR IN OIL? ADDlTIVEi . . . ^ G C P ?
COAL ?
COKE?
SARBONS • 1600 Settings • Split-Second Accuracy • Automatic Switching • Giant I " Dial
If y o u e n g a g e i n t h i s a c t i v i t y WRITE IMMEDIATELY
• Portable Models • Panel Mount Models
FOR INFORMATION ABOUT THIS NEW
Every Gra-Lab Universal Timer can be set for any desired time period within an unusually wide range of 3600 possible settings, (ie.—1 sec. to 60 min., 1 min. to 60 hrs., etc.). A t end of preset interval buzzer alarm sounds and external load is automatically switched on or off. Priced at SSI.95 to $26.95. ELECTRIC STOP CLOCKS—GRA-LAB Micro Timers with large 8" dials are available in 1/10 second or 1/1000 minute graduations for accurate measurements of elapsed time in laboratory or production operations. Priced at $37.50.
Contact your laboratory supply house today! . . . or write direct for complete catalog t o
DIMCO-GRAY COMPANY
2 1 0 E. SIXTH STREET DAYTON 2, OHIO
/ f e y - DEVELOPMENT!
From Leco, a completely new procedure for the analysis of s u l f u r in o i l , oil a d d i t i v e s , rubber, coal, coke, hydrocar bons . . . reducing analysis of these materials to a fraction of the time required for conven tional methods. Write today for complete information! LABORATORY EQUIPMENT CORP. St. Joseph 1, M i c h i g a n
Circle No. 48 A-1 on Readers' Service Card, page 37 A
Circle No. 48 A-2 on Readers' Service Card, page 37 A
VISCOSITY α factor in your
product?
Does More Jobs
SAVE MONEY WITH THE H0EPPLER Here's an instrument that pays for it self over and over again! H o w ? By assisting in product development and manufacture — a n d by eliminating costly e r r o r s i n viscosity c o n t r o l . Operating o n the falling-ball principle, the H o e p p l e r Viscosimeter has an accuracy of 0 . 1 % t o 0 . 5 % . Even gases as well as liquids, oils, plastics, syrups, viscous tars, etc., can be measured. Only a small sample (30cc) is required, a n d the results are consistent a n d reproducible. T h e Hoeppler Viscosimeter is n o w serving manufacturers in many fields — food, chemical, ceramic, plastic, etc. It belongs in any laboratory where viscosity is a factor in the manufacture o r sale of a product. Write for Bulletin HV-305, which gives complete details
BETTER Because: IT IS 9 5 % PURE LATEX Safe and non toxic. May be used for food, bacteriolog ical and medical testing purposes. Resistant to most chemicals. May be repeatedly sterilized.
IT IS S T R O N G A N D T O U G H Tested to 4500 lbs. per square inch. Withstands rough usage. ., ... IT I S M O S T E L A S T I C Withstands stretching and usual pressures without losing shape. T h e most elastic type of tubing made.
World Suppliers FALLING BALL
M a n u f a c t u r e d b y FISH-SCHURMAN CORP. 7 2 Portman Road, N e w Rochelle, Ν . Υ.
Fish-Schurman Circle No. 48 A-3 on Readers' Service Card, page 37 A
48 A
Laboratory Tubing
IT IS MOST RESILIENT Soft, pliant, light weight, easy to connect a n d disconnect. Safe to use on the most delicate lab equip ment. Available in 24 sizes from 1/8" χ 1/32" through 1" χ 1/8". Order from your laboratory supplier.
Rubber Latex Products, Inc.,Cuyahoga Falls,Ohio Circle No. 48 A-4 on Readers' Service Card, page 37 λ
ANALYTICAL
CHEMISTRY
