CARL
ZEISS
The famous
ABBE REFRACTOMETER Made in West Germany
is available incorporating the following features : • Range of measurements: no 1.3 to nD 1.71 and sugar percentage scale 0% to 95%. For liquids and solids by transmitted and reflected light. • Measuring surface of index prism always at horizontal position. • Observation telescope mounted stationary at an in clined position to carry out measurements at a re laxed posture. • Border line of total reflection and scales are observed simultaneously in telescope. • Measuring prism in heating mount can be easily inter changed. • All movable parts are fully protected by being entirely enclosed within the housing. • Special index prism in heating mount available for measurements up to nD 1.85 (on special order only). • For highest - accuracy - measurements, an UltraThermostat with different constancy of temperature ±0.01° is available as an accessory. Free detailed literature sent upon request
C A R L
Z E I S S ,
I N C . ,
485 Fifth Ave., New York 17, Ν. Υ.
Guaranteed uninterrupted repair service For further information, circle number 25 A-1 on Readers' Service Card, page 39 A
LABORATORY TIME SAVERS... Eastern Midget Pumps and Laboratory Stirrers are designed to perform dozens of laboratory mixing and pumping operations. They are available in a variety of powers, capacities, and specifications. Eastern engineers will help you by making recommendations to solve your particular equipment problems.
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Eastern INDUSTRIES, 100 SKIFF ST. ·
là
INC.
HAMDEN 14, CONN.
Write for Eastern Bulletins Β-15Ί0 and B-400. charts, standard models and prices are
Performance illustrated.
For further information, circle numbers 25 A-2, 25 A-3 on Readers' Service Card, page 39 A
VOLUME
2 7, N O .
12, D E C E M B E R
19S5
25 A
