LOW PRICES O N QUALITY
ABSORPTION CELLS Fully Fused — No Cemented Seams to Dissolve in Acid.
N E W APIEZON anti-seize greases stop costly laboratory glassware breakage A P - 1 0 0 is a h i g h v a c u u m Completely effective in tests grease for use d o w n to against a wide range of a g 5 x 1 0 - 1 1 torr at 1 5 ° C , with a gressive solvents over peri softening point of 3 0 ° C . ods of 72 hours and more. A P - 1 0 1 is a n a l l - p u r p o s e Also—Apiezon Oils—low va stop-cock grease for moder por pressures—very s t a b l e — ate vacuum use down to 1 0 - 1 ideal as vapor-diffusion pump torr and a softening point of fluids. 185°C. Apiezon C o m p o u n d Q a These greases are resist putty-like, versatile, low cost ant to organic solvents and sealant. will not leach out of ground Apiezon Waxes for more glass joints or stop-cocks. permanent vacuum joints. Write for Bulletin 43-AC.
B1D01L
520 types Cuvettes available in Glass, Special Glass. Quartz. Matched Sets, specials to order
CUVETTE WASHER-DRYER
tlcciricdl .inn Speed Medsuring Instruments PLYMOUTH MEETING. PENNSYLVANIA 19462 l l i ' i .'!•> Ml· 1 »?»
PRECISION CELLS, INC. 2 2 1 P a r k Ave. · (516)
Circle No. 19 on Readers' Service Card
CLIP A N D A T T A C H T O Y O U R LETTERHEAD
New
with
Send a copy of Catalog 1124 and see if it will change my thinking.
control
For rapid a n d accurate B.t.u. and calorific value determi nations with coal, oil, jet fuels, foods a n d other solid or liquid samples.
A new solid-state automatic controller eliminates m a n u a l t e m p e r a t u r e adjustments, im proves t h e repeatability a n d speeds all calorific tests.
Ask for our latest calorimeter .
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catalog
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. State & Zip
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PARR INSTRUMENT 2 1 1 Fifty-Third St.
COMPANY
M o l i n e , Illinois 6 1 2 6 5
Circle No. 111 on Readers' Service Card 134 A
·
automatic
temperature
Name & Title.
City
PARR ADIABATIC CALORIMETER
LET US SEND YOU A COPY
PACKARD INSTRUMENT COMPANY, INC. Becker Chromatography Division 2200 Warrenville Road, Downers Grove, Illinois 60515
Address_„
H i c k s v i i l e , Ν. Υ. 1 1 8 0 1 938-7772
used for adding smelt volumes of emyme solution to reaction mixtures in spectrophotometer cuvettes $2.50 ea.
Circle No. 115 on Readers' Service Card
This new, 16-page catalog could change your thinking about GAS CHROMATOGRAPHS
Company
CUVETTE ADD-A-MIXER
It hole Ctll Storage Rack 18.50 ea. NEW CATALOG 70/1 AVAILABLE
JAMES G. BIDDLE CO.
Packard
The only last
way to wash and dry cuvette; without scratching or breaking. Completely assembled (without filtering Hfk) S16.ÛO ea. '
ANALYTICAL CHEMISTRY, VOL. 4 2 , NO. 1 3 , NOVEMBER 1 9 7 0
Circle No. 113 on Reader's Service Card
