MARKING OF LABORATORY MATERIALS m . . made
easy! R i n c o Rotating V a c u u m - T y p e Evaporator
Nylab No. 69730 Price: $4.95 ea.
Speed ity four
This new Laboratory" Fountain Pen is a precision instrument t h a t writes clearly and easily on labora tory materials such as plastic, glass, metal, cellophane, w o o d and porce lain. Conveniently filled direct from ink container. . .no messy dropper required. L i g h t w e i g h t , of standard fountain pen size, the pen is fully guaranteed w h e n used w i t h inks offered by the manufacturer. Inks are free flowing, non-spreading, water and soap-proof.. .resistant to alcohol, alkali, acids and oils. Colors are non-fading and of exceptional permanency. M a y be ordered as listed below: ITEM
SIZE
PRICE
/i oz. jar V« ° z - jar 3 / 4 oz. jar Z /A oz. jar
$.30 ea. .30 ea. .30ea. .30ea.
NYLAB NO.
InkRed Black Yellow White
3
69733 69734 69735 69736
A l l inks opaque and removable.
For all your laboratory needs, w r i t e for our catalog on company letterhead.
NEW YORK NYLAB KEY TO ALL LABORATORY SUPPLIES .
Laboratory Supply
COMPANY INC. 70 Varick Street, N e w York 13, Ν. Y. Telephone:
CAna!
6-6504
Circle No. 73 A-1 on Readers' Service Card, page 61 A VOLUME
2 8 , N O . 4, A P R I L
1956
evaporation or five
of solvents
times—varying
of low with
volatil solvents.
Adaptable for volumes of 1 ml to 500 ml. Utilizes the principle of the spreading out of a thin fdm over large area and subjecting to negative pressure. Can be used in single or multiple units. At 20°C, 30 ml of water will be evaporated in 30 minutes. Especially useful with biological extracts or heat-sensitive compounds; will operate faster with increased temperature, if sample permits. Consists of a monel metal shaft with a f" 19/38 joint at lower end. Shaft rotates on oilite bronze bearings; Teflon ring seals; monel metal hous ing. Use with standard pump and trap, or standard aspirator. Flasks rotate at 93 r.p.m. 39474—Rinco Rotating Vacuum-Type Evaporator, with ~ψ 19/38 joint to accommodate small flasks, such as 50 ml; with induction type motor; for 115 v., 60 cycles, A.C. each $114.50 39475—Rinco Evaporator, with brush-type motor. . $96.50 808 20D—Adapter, "Pyrex" Brand, for adapting J19/38 joint of Rinco Evaporator to larger flasks, having a ~ψ 24/40 joint, each $1.83 N e w Rinco " Solvent Recovery C o n d e n s e r " Valuable accessory to Rinco Evaporator. Connects to flask of Rinco Evaporator with standard taper ground glass joints. Rotates with evaporating flask. Recovers in excess of 75% of solvent. Increases speed of evaporation 2 to 3 times. Easy to cool with cold water or ice. Protects vacuum pump and system from corrosive solvents. 39477—Solvent Recovery Condenser, standard size, 1000 ml, with 500 ml working capacity, ~ψ 24/40 ground glass joints, (Other sizes available on request) E a c h . . . . $1 6.00
ALOE SCIENTIFIC DIVISION OF A. S. ALOE COMPANY 5655 Kingsbury · St. Louis 1 2, Mo. LOS ANGELES · SAN FRANCISCO . PHOENIX · SEATTLE DENVER . MINNEAPOLIS · KANSAS CITY · DALLAS NEW ORLEANS ·> ATLANTA · WASHINGTON. D. C. Circle Nos. 73 A-2, 73 A-3 on Readers' Service Card, page 61 A
73 A
