22 A
ANALYTICAL
0?
CHEMISTRY
f\et» Duo- Sea I Vacuum Pump Faster Pumping - Larger Capacity HIGH
CAPACITY
5 Cubic Feet Per Minute (140 Liters Per Minute)
GUARANTEED
VACUUM
0.0001 mm Hg or 0.1 Microns
QUIET OPERATION
VISIBLE OIL LEVEL
COMPACT DESIGN Overall dimension for pump and motor Ί 5 Η " high and U " wide χ 19%" long
No. 1402-B
This new two-stage Duo-Seal p u m p is constructed with the same care and precision as its fore-runners in the Duo-Seal line. T h e extremely quiet operation, so much appreciated in the other models, is also char acteristic of this unit. A positive oil seal prevents the oil from backing into the exhaust line. Oil may be changed in a few minutes due to the conveniently located oil drain. Available
W.
for Immediate
M. W E L C H
Each $190.00
1402B. DUO-SEAL PUMP, M O T O R DRIVEN. A No. 1402 Pump mounted on a base with a "y^ H.P. 115-volt A.C. motor. Complete with pulleys, belt, a n d cord.
Shipment.
Each $ 2 5 0 . 0 0
SCIENTIFIC £STABLISHED
1515 S e d g w i c k S t r e e t
1402. DUO-SEAL TWO-STAGE V A C U U M PUMP. Pump unit only, not mounted on α base r but with a 10 inch g r o o v e d pulley, a supply of oil, a n d directions for use.
Dept. A
COMPANY
1880
Chicago, Illinois,
U.S.A.
