Only Taylor Comparators Provide ^ H N E LABORATORY ° I AMD EQUIPMENT FURNITURE AND t « „
PERMANENTLY GUARANTEED COLOR STANDARDS for testing
p H , CHLORINE, PHOSPHATE :
Simply place reagent treated sample in middle tube in base, move Color Standard until colors matcH and . . .
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T h e r e ' s no d a n g e r of mechanical inaccuracy w h e n you use Taylor Comparators for d e t e r m i n i n g p H , chlorine or p h o s p h a t e , because all Taylor liquid color standards carry an unlimited guarantee against fading.
From coast to coast, leading laboratories recognize Peterson's reputation f o r quality furniture for laboratory, and library. Whatever your requirements may be, call on Peterson's experts for an economical solution to your problems . . . No o b l i g a tion is incurred.
One sturdy plastic slide houses all color standards necessary for any one determination. No fragile single standards to handle! Each complete set includes base, slide, reagents and accessories. The utility of these sets is high, but their cost is low. S £ E y o U R „ E A L E R F O R T A Y L O R S E T s . . W R I T E DIRECT FOR FREE DATA B O O K Gives 96 pages of helpful technical d a t a on " M o d e r n pH a n d Chlorine Control" in 34 basic manufacturing processes. W r i t e t o d a y if this valuable reference is not a l r e a d y in your l i b r a r y .
Distributors located throughout the United States
W . A . TAYLOR A N D C O
LEONARD P E T E R S O N & CO., INC. 1830 FULLERTON AVENUE
C H I C A G O 14.
7302 YORK RD. • BALTIMORE 4, MD
Photoelectric Colorimeter M O D . 4 0 1
for accuracy, ease, and speed of operation in colorimetric and turbidimetric analysis With
For use with
W i t h sliding tube carrier and sealed photocell For operation from power line and battery In rigid metal housing with Plexiglas cover
For Production Control Analytical
Write for Bulletin §409 to
Price, complete with 6 color filters $ 1 5 8 . —
PHOTOVOLT CORP. 95 Madison Ave.
New York 16, N. Y.