solvents are present. Suggested ap plications are in potting and en capsulating, and as a caulking and sealing compound. Dept. IEC, Emerson ir Cuming, Inc., Canton, Mass. 405
NOW A LOW COST METERING
PUMP FOR
Micro Mica
Powders
Muscovite mica is used in the manufacture of Scintilux micro mica powders. T h e mica is charac terized by its lustrous green appear ance and soft texture which renders it particularly suitable for grind ing. T h e fluid energy micronization process is used to prepare the mica. Suggested uses include rein forcing agent, sealing agent, and suspending agent in paints. Dept. IEC, Mica Products & Insulation Co. (Pty.), Ltd., P.O. Box 70, Ladysmith, Natal, South Africa. 406
SULPHURIC ACID AND OTHER
STRONG OXIDIZING AGENTS
NOW a
special formulation of Hypalon makes the dependable SIGMAMOTOR Pump applicable for metering sul phuric acid or other strong oxidizing agents. Liquid is forced through Hypalon tubing by wave-like action of steel fingers. Never contacts metal. Model T6SH opens to pcrmil change of tubing easily — quickly.
Asbestos-Polyester Insulation A new asbestos-polyester electri cal laminate developed by JohnsManville is far stronger both elec trically and mechanically than any NEMA Grade A or AA laminate made. Called Quinterrabord No. 880, it is recommended for applica tions to 50 kv. at temperatures in
SIGMAMOTOR Inc. 67
NORTH MAIN STREET
·
MIDDLEPORT,
NEW
YORK
Circle No. 44 on Readers' Service Card
SAFE
AND
ECONOMICAL ELECTROLYTIC PLANT for the PRODUCTION
OF HYDROGEN
99.5-0/0 PURE
the 155° to 180°C. range. It will re tain its high dialectric strength over long periods when exposed to high temperatures and humidities. It is easy to fabricate and has the strength to support equipment weights without yielding. It has high chemical and fire resistance, and twice the arc resistance of glass polyester laminates. Dept. IEC, Johns-Manville, 22 East 40th St., New York 16, Ν. Y. 407 (Continued
on page 94 A)
Illustration shows plant recently installed in Spain and consists of 256 18f000 ampere cells producing 2,100 cu. meters per hour.
Knowles Electrolytic plant produces hydrogen of a constant high s t a n d a r d of purity, together with oxygen 9 9 . 8 % p u r e . T h e p l a n t is uniquely simple and safe and requires no highly skilled labour. P l a n t s of all sizes u p to a single installation absorbing 25,000 k W are in operation in all p a r t s of t h e world.
THE INTERNATIONAL SANDYCROFT U. S. A . Agents:
ELECTROLYTIC CHESTER
PLANT
CO. LTD. ENGLAND
AIR PRODUCTS, INC., P. O . Box No. 538, Allentown, Pa. Circle No. 22 on Readers' Service Card VOL. 53, NO. 12 ·
DECEMBER 1961
H O 43 93 A
