NEW PRODUCTS Laboratory "Standard" Cells Industrial Instruments, Inc., has a new series of laboratory "standard" cells for checking "working" conductiv-
new...
BETHLEHEM SEAL-CRIB for Glass Tubing
• T h e Filter-Seal door k e e p s o u t all d u s t — e v e n dust d e p o s i t e d b y " a t m o s p h e r i c breathing." • Divided c o m p a r t m e n t s f o r e a s y classification. • Holds tubing of a l l s t a n d a r d sizes a n d l e n g t h s . • S a v e s s p a c e in t h e l a b o r a t o r y . Write ity cells. The interchangeable cells and chambers provide cell constants of Viooi Vioi a n d 1» a s well a s convenient setups for immersion and flow. P-25 Precision Flow Stopcock The new glass stopcock by Wilmad Glass Co. is constructed of a precisionground cylindrical barrel and a matching cylindrical plug. Rotation of the plug causes it to move axially in the barrel. The axial travel of the plug
for Bulletin
SC-54
BETHLEHEM Suspend from
%
ceiling
Apparatus Company, Inc. HELLERTOWN, PENNSYLVANIA
For further information, circle number 67 on Readers' Service Card, page
Matheson Gas Mixtures for Nuclear Counting Matheson offers prompt delivery on standard and custom mixed gases for all Nuclear Plow Counter requirements. Close quality control assures stable operating characteristics and optimum performance.
PLUG |
The following standard mixtures are available from our three plants in four cylinder sizes : PROPORTIONAL C O U N T I N G MIXTURES 9 0 % A r g o n , 1 0 % Methane 96 %
BARREL
Helium, 4 %
Isobutane
GEIGER C O U N T I N G MIXTURES 1 . 3 % n-Butane, 9 8 . 7 %
Helium
0 . 9 5 % Isobutane, 9 9 . 0 5 %
Helium
Special mixtures compounded to your specifications
thus controls the flow according to the alignment of the groove with the inlet and outlet of the stopcock. Flow rates are independent of the stopcock size and one stopcock covers the range of 0 to 4 mm. I t is suitable for pressure applications up to 25 p.s.i.g., as the plug cannot pop under pressure. P-26
Matheson offers a complete line of Automatic Pressure Regulators, Valves, Flowmeters and Special accessories for the accurate flow control vital to counting operations. Our Sales Engineering Department will be glad to help you choose the proper components for your requirements.
The Matheson Company, Inc. Compressed Gases and Regulators
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East Rutherford, N. J.; Joliet. HI.; Newark, Calif.
V O L . 3 1 , N O . 1 , JANUARY 1 9 5 9
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6 7 A
