PRECISION DISPENSING EVERY TIME
IT DOBS YOUR
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HMYUI ALL-PLASTIC DISPENSER
This one book digs up the facts you need—fast! No plowing through f i l e cabinets of manufactur ers' literature—it's all here, pre-filed, indexed 5 ways, in CHEMICAL MATERIALS CATALOG. More than 500 closepacked pages contain all the data you need on chemicals and raw materials.
*Hec»APPROACH TO REPETITIVE DISPENSING • • • • •
HIGHEST ACCURACY FAST ACTION - TIME SAVING COMPLETE SAFETY WITH CORROSIVES SIMPLE TO ADJUST - EASY TO USE DEPRESS - RELEASE AND PRESTO! YOUR ACCURATE ALIQUOT!
Keep CMC close by—where you can pounce on it in a hurry. It answers your questions almost as soon as you ask. It often leads you to problemsolutions. It aids your thinking.
The MISCOmatic Dispenser, designed to simplify one of the most tedious of labora tory tasks, is resistant to most corrosive liquids, even concentrated sulfuric acid. MISCOmatic is constructed of Kel-F Elas tomer, polypropylene and polyethylene. Plunger spring is coated with polyethylene or Teflon.* MISCOmatic is easy to set —vernier screw regulates ejection from 1 to 10 ml accu rately within 1.0%. Reproducibility accu racy ± 0 . 4 % .
Designed and published exclusively by process men for process men. Use i t ! It does your digging for you.
Catalog No. M-1924 Price $39.00 "Trade name — Du Pont
cmc CHEMICAL
miCROCHCmiCflL SP€C1 flLTICS CO. 1825 EASTSHORE HIGHWAY
MATERIALS
CATALOG
REINHOLD PUBLISHING CORPORATION
BERKELEY 10. CALIFORNIA
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430 PARK AVENUE • NEW YORK 22, Ν. Υ.
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BASIC ELECTRICAL MEASURING and CALIBRATING INSTRUMENTS
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HIGH QUALITY STANDARDS . . . in Optical Crystal Blanks
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Calcium Fluoride Barium Fluoride Lithium Fluoride
Sodium Chloride Potassium Chloride Potassium Bromide
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Prompt Delivery · Large Size Availability · Precision Cutting • Scattering Free · Impurity Absorption Free · Strain Free
. . . in Optical Maser Crystals U+3 · CaF 2 U + s · BaF 2 U + s · SrF 2 Tm+3 · SrF 2
Dy+s · CaF 2 Sm+2 · CaF 2 Sm+2 · SrF 2 Tm+2 · CaF»
Nd+3 · CaF 2 Nd+3 · BaF 2 Nd+3 · SrF 2 Ho+3 · CaF 2
Write today for Bulletin AC 6 0 - 6 3 t-fi"
Also, all other trivalent rare earths in CaF2, BaF2 and SrF2. Indicative of our quality, most of the above "wer.e first mased in Optovac grown crystals.
OPTOVAC, NORTH
B R O O K F I E L D
142 A
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ANALYTICAL CHEMISTRY
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J A M E S G. B I D D L E
CO.
Electrical Testing and Speed Measuring Instrument
INC
M A S S A C H U S E T T S
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PLYMOUTH MEETING, PENNSYLVANIA Area Code 21 5 -'Mitchell 6-9200
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