THE LΑΒΟRATΟRY SUPPLY CENTER
1
THE LΑΒΟRATΟRY SUPPLY CENTER Celite 521 Celite* 521 is specially processed to remove acid soluble components. Negligible iron content eliminates darkening when filtering tannin compounds. Thus, Celite 521 is par- ticularly well adapted to filtration of whiskey. Also highly effective in dilute sul- furic acid filtration for peroxide manufac- ture, and in production of tannic acid. For samples and complete details about Celite 521, write Johns-Manville, Box 14, NewYorkl6,N.Y.InCanada,565 gsga LakeshoreRd.,E., Port Credit, Ont. ΪΙΛ1 •Reg. U.S. Pat. Off. CLARK MICROANALYTICAL LABORATORY CH, N, S, Halogen, Fluorine, Oxyyen, Alkoxyl, Alkimide, Acetyl, Terminal Methyl, etc., by specialists in organic microchemical analysis. P.O. Box 17 Howard S. Clark, Director Urbane, III. 1 r^flflflPfllOE" TRADE-MARK ORGANIC SCINTILLATORS from ARAPAHOE "POPOP" (Scintillation Grade) M.P. 245-846° C. Fluorescence Max. 4200A 2,5-DIPHENYLOXAZOLE (Scintillation Grade) M.P. 70-72° C. Fluorescence Max. 3800A ALPHANAPHTHYLPHENYLOXAZOLE (Scintillation Grade) M.P. 104-106° C Fluorescence Max. 4050A p-TERPHENYL (Scintillation Grade) M.P. 211-212° C Fluorescence Max. 3460A 1,1,4,4-TETRAPHENYLBUTADIENE (Scintillation Grade) M.P. 104-106° C Fluorescence Max. 4320A PHENYLBIPHENYLYL0XADIAZ0LE (Scintillation Grade) M.P. 167-169° C Fluorescence Max. 3700A CADMIUM PROPIONATE, Anhydrous M.P. 182-185° C Solubility: 12s per 100 ml of 1:9 metha- nol-toluene Distributed by TRAOERLAB, INC. ARAPAHOE CHEMICALS, INC. 2800 PEARL STREET · BOULDER, COLORADO PRODUCERS OF FINE ORGANIC CHIMICAIS GAS CHROMATOGRAPHY High Temperature Apparatus Suitable for operation to 350° C for the analysis of thermally stable materials such as wax components, petroleum fractions, plasti- cizers, fatty acid esters and alcohols, polycyclic aromatics and other materials boiling to 450°. Apparatus described by S. Dal Nogare and L W. Safranslci at ACS-ISA Meeting, Memphis, Dec. 6, 1956. Also reported and pictured in Anal. Chem. 29, 82A (June 1957), and re- ported in Anal. Chem. 29, 26A (February, 1957). Direct inquiries to: Κ S M SCIENTIFIC GLASSWARE CO. 1001 Kendall Road, Wilmington 5, Delaware Phone: Wyman 44427 SPECIAL LIGHT SOURCES by GATES • Raymaster Blacklight (Ions and short wave ultraviolet) • Sodium Vapor • Mercury Vapor • Zirconium Concentrated Arc Lamps • Mercury Point Sources • Imported Spectral Lamps • Photochemical or High Intensity "Uviarcs" • Auxiliary Operating Equipment for Above Writ» '°' FREE Catalog or Contact π I l i e youI Laboratory Supply Dealer. Rox 216, Franklin Square, L.I..N. Y. 4HffLT&-TOXICITY TESTS vte^J^eg^La^J following FDA procedures, for ^^!^Ss"^ v chemicals, foods, drugs, cosmetics, pesticides, additives. Biological assays. Screeningtests.Complete research and develop- ment services. No obligation for estimates. Call or write Arthur D. Herrick, Director. NEW DRUG INSTITUTE 130 East 59 St., New York 22 · Mu 8-0640 «WW MICROSPLITTER ^ \ * SUPPLY ^^•7 P.O. Box 645 - Panama City. Florida LABORATORY SAMPLERS • · · Vi" Microsplitter • · 14" and V4" Riffle Samplers • VIBRA-PAD • Hy-Back Pans Sampler Pans -*— Se ndforliterature SPECIAL LaMOTTE REAGENTS for simplified COLORIMETRIC ANALYSIS For IRON—use LaMotte TIRON (Yoe & Jones) Sensitivity—1 part Iron in 100,000,000 parts solution For TITANIUM—use LaMotte TIRON (Yoe or Armstrong) Sensitivity—1 part Titanium in 100,000,000 parts solution For MOLYBDENUM—use LaMotte TIRON (Yoe & Will) Sensitivity—1 part per million Molyb- denum For ZINC—use LaMotte ZINCON (Yoe & Rush) Sensitivity—1 part Zinc in 70,000,000 parts solution For COPPER—use LaMotte ZINCON (Yoe & Rush) Sensitivity—1 part Copper in 70,000,000 parts solution Literature will be sent immediately on request Also familiarize yourself with LaMotte Colorimetric Methods (portable) for pH— CHLORINE—PHOSPHATES and POLY- PHOSPHATES—CHROMATES, etc. Ask for illustrated catalog, with prices LaMOTTE CHEMICAL PRODUCTS COMPANY Dept. A.C., Chestertown, Md. LABORATORY SERVICES for the FOOD, FEED, DRUG and CHEMICAL INDUSTRIES Analyses, Biological Evaluation, Toxicity Studies, Insecticide Testing and Screening, Flavor Evaluation. Project Research and Consultation Write for Price Schedule P. O. Box 2217 · Modison 1, Wis. moke Spectrogram Interpretations in a matter of minutes! get the / ] I CADRER/ ; midget edition / ι of standard spectra { You'll get answers in minutes to difficult organic problems by comparing your spectrogram with one or more spectrograms of the SADTLER MIDGET EDITION. Approx. 10,000 spectra printed three to a page ο η δ Ά " χ Π" sheets, indexed by ASTM on IBM cards. Standard edition also available. Write, wire or call. j LOcust . [4-Ο835' SADTLER RESEARCH LABORATORIES 1517 VINE ST. PHILA. 1, PA. ANALYTICAL GRADE ION EXCHANGE RESINS Processed from Dowex Materials Send for Technical Bulletin λ BIO-RRD ^ct6<nett<nte^ %>&t6elecf 9 > (?αίφ*«£Λ PIPETTE PUMP Ccmveru&y>é fet NEW! Delicate control of fluids. SAFE for handlinj radio isotopes & disease germs! Turn knob to fill pipette and reverse to empty. Made of aluminum & nylon. $2.50-Guaranteed Micro-Fine Instruments. Box 2122. Des Moines 10, la 1 02 A · ANALYTICAL CHEMISTRY ACID WASHED Mitei \\û WISCONSIN ALUMNI ((SEARCH «UNDATK»
Transcript of THE LΑΒΟRATΟRY SUPPLY CENTER
THE L Α Β Ο R A T Ο R Y SUPPLY CENTER
Celite 521 Celite* 521 is specially processed to remove acid soluble components. Negligible iron content eliminates darkening when filtering tannin compounds. Thus, Celite 521 is particularly well adapted to filtration of whiskey. Also highly effective in dilute sulfuric acid filtration for peroxide manufacture, and in production of tannic acid.
For samples and complete details about Celite 521, write Johns-Manville, Box 14, NewYorkl6,N.Y.InCanada,565 gsga LakeshoreRd.,E., Port Credit, Ont. Ϊ Ι Λ 1 •Reg. U.S. Pat. Off.
CLARK MICROANALYTICAL LABORATORY CH, N, S, Halogen, Fluorine, Oxyyen, Alkoxyl, Alkimide, Acetyl, Terminal Methyl, etc., by specialists in organic microchemical analysis.
P .O . Box 17 Howard S. Clark, Director
Urbane, III.
1 r^flflflPfllOE" TRADE-MARK
ORGANIC SCINTILLATORS from ARAPAHOE
"POPOP" (Scintillation Grade) M.P. 245-846° C. Fluorescence Max. 4200A
2,5-DIPHENYLOXAZOLE (Scintillation Grade)
M.P. 70-72° C. Fluorescence Max. 3800A
ALPHANAPHTHYLPHENYLOXAZOLE (Scintillation Grade)
M.P. 104-106° C Fluorescence Max. 4050A
p-TERPHENYL (Scintillation Grade) M.P. 211-212° C Fluorescence Max. 3460A
1,1,4,4-TETRAPHENYLBUTADIENE (Scintillation Grade)
M.P. 104-106° C Fluorescence Max. 4320A
PHENYLBIPHENYLYL0XADIAZ0LE (Scintillation Grade)
M.P. 167-169° C Fluorescence Max. 3700A
CADMIUM PROPIONATE, Anhydrous M.P. 182-185° C Solubility: 12s per 100 ml of 1:9 metha-nol-toluene
Distributed by TRAŒRLAB, INC.
ARAPAHOE CHEMICALS, INC. 2800 PEARL STREET · BOULDER, COLORADO PRODUCERS OF FINE ORGANIC CHIMICAIS
GAS CHROMATOGRAPHY High Temperature Apparatus
Suitable for operation to 350° C for the analysis of thermally stable materials such as wax components, petroleum fractions, plasti-cizers, fatty acid esters and alcohols, polycyclic aromatics and other materials boiling to 450°.
Apparatus described by S. Dal Nogare and L W. Safranslci at ACS-ISA Meeting, Memphis, Dec. 6, 1956. Also reported and pictured in Anal. Chem. 29, 82A (June 1957), and reported in Anal. Chem. 29, 26A (February, 1957).
Direct inquiries to:
Κ S M SCIENTIFIC GLASSWARE CO. 1001 Kendall Road, Wilmington 5, Delaware
Phone: Wyman 44427
SPECIAL
LIGHT SOURCES by GATES
• Raymaster Blacklight (Ions and short wave ultraviolet)
• Sodium Vapor • Mercury Vapor • Zirconium Concentrated Arc Lamps • Mercury Point Sources • Imported Spectral Lamps • Photochemical or High Intensity "Uviarcs" • Auxiliary Operating Equipment for Above
Writ» '°' F R E E Catalog or Contact π I l i e y o u I Laboratory Supply Dealer.
Rox 216, Frankl in Square, L . I . . N . Y.
4HffLT&-TOXICITY TESTS vte^J^eg^La^J f o l l o w i n g FDA procedures , for
^ ^ ! ^ S s " ^ v c h e m i c a l s , foods, drugs, cosmetics, pesticides, additives. Biological assays.
Screeningtests.Complete research and development services. No obligation for estimates. Call or write Arthur D. Herrick, Director.
NEW DRUG INSTITUTE 130 East 59 St., New York 22 · Mu 8-0640
« W W MICROSPLITTER ^ \ * SUPPLY ^ ^ • 7 P.O. Box 645
- Panama City. Florida
L A B O R A T O R Y S A M P L E R S
• · · Vi" M i c r o s p l i t t e r
• · 14" and V4"
Riffle Samplers •
VIBRA-PAD •
Hy-Back Pans Sampler Pans
-*— Se nd for literature
SPECIAL LaMOTTE REAGENTS for simplified
COLORIMETRIC ANALYSIS For IRON—use LaMotte TIRON
(Yoe & Jones) Sensitivity—1 part Iron
in 100,000,000 parts solution For TITANIUM—use LaMotte TIRON
(Yoe or Armstrong) Sensitivity—1 part Titanium
in 100,000,000 parts solution For MOLYBDENUM—use LaMotte
TIRON (Yoe & Will) Sensitivity—1 part per million Molyb
denum For ZINC—use LaMotte ZINCON
(Yoe & Rush) Sensitivity—1 part Zinc in
70,000,000 parts solution For COPPER—use LaMotte ZINCON
(Yoe & Rush) Sensitivity—1 part Copper
in 70,000,000 parts solution Literature will be sent immediately on request
Also familiarize yourself with LaMotte Colorimetric Methods (portable) for pH— CHLORINE—PHOSPHATES and POLYPHOSPHATES—CHROMATES, etc.
Ask for illustrated catalog, with prices
LaMOTTE CHEMICAL PRODUCTS COMPANY
Dept. A.C. , Chestertown, M d .
LABORATORY SERVICES for the FOOD, FEED, DRUG and
CHEMICAL INDUSTRIES Analyses, Biological Evaluation,
Toxicity Studies, Insecticide Testing and Screening, Flavor Evaluation. Project Research and Consultation
Write for Price Schedule P. O. Box 2217 · Modison 1, Wis.
moke Spectrogram
Interpretations in
a matter of minutes!
get the / ] I
CADRER/ ; midget edition / ι of standard spectra {
You'll get answers in minutes to difficult organic problems by comparing your spectrogram with one or more spectrograms of the SADTLER MIDGET EDITION. Approx. 10,000 spectra printed three to a page ο η δ Ά " χ Π " sheets, indexed by ASTM on IBM cards. Standard edition also available. Write, wire or call.
j L O c u s t . [ 4 - Ο 8 3 5 '
S A D T L E R RESEARCH LABORATORIES 1 5 1 7 VINE ST. PHILA. 1, PA.
ANALYTICAL GRADE ION EXCHANGE RESINS
Processed from Dowex Materials Send for Technical Bulletin λ
BIO-RRD ^ct6<nett<nte^ %>&t6elecf 9 > (?αίφ*«£Λ
PIPETTE PUMP Ccmveru&y>é fet
NEW! Delicate control of fluids. SAFE for handlinj radio isotopes & disease germs! Turn knob to fill pipette and reverse to empty. Made of aluminum & nylon. $2.50-Guaranteed Micro-Fine Instruments. Box 2122. Des Moines 10, la
1 0 2 A · ANALYTICAL CHEMISTRY
ACID WASHED Mitei \\û
WISCONSIN ALUMNI
((SEARCH «UNDATK»
