Product Capsules Titrators. A u t o m a t i c unit provides t o t a l coordination of operations in cluding sample transport, autopipetting, measurement, calcula t i o n , and print-out. A 131 Ultrasonic instruments. Ultrasonic probe has internal heat s e n s i n g circuit to monitor heat in probe, t r a n s d u c e r assembly, generator. A 127 Viscometer. Data o b t a i n e d directly in centipoise units f r o m dial of portable unit. Literature. A 22 Volumeter. U n i t accurately deter m i n e s t a p densities and p a c k i n g v o l u m e s in m i n u t e s . Data s h e e t . A 194 Ware, plastic. Leakproof, nonc o n t a m i n a t i n g , easy-to-clean bottles in 30 styles a n d 22 sizes f r o m one ounce to 13 gallons. A 148 Washing machines. Unit makes contaminated vessels reusable. One liter of solvent, which can be used several t i m e s , will decon t a m i n a t e 140 c o u n t i n g vials in 90 minutes. A 13 Water analyzers. Paper on water qualities and their effect on research and production. A 5
LABORATORY
SUPPLY CENTER
2-Acetyl Furan · N-Acetyl Thiourea · AdipoyI Chloride · DL-Alanine Allylurea · 4-Aminohippuric Acid · Anisoin · Benzhydryl Bromide a-Benzoinoxime · Benzyl Bromide · Carbanilide · Cesium Chloride Chalcone · 2,5-Diethoxytetrahydrofuran · 2,7-Dihydroxy Naphthalene 2,4-Dinitrophenylhydrazine · 2,6-Dipicolinic Acid · Dulcitol Glucose-1-Phosphate Disodium Salt · Hydroxylamine HCI & Sulfate Hyodesoxycholic Acid · o-lodobenzoic Acid · Malonic Acid · Orcinol Salicin · Sodium Succinate · Triphenyltetrazolium Chloride · Xylose Write for list K-72 of other chemicals TWX:
Tel.: 516-273-0900
EASTERN CHEMICAL Division of GUARDIAN CHEMICAL CORP.
510-227-6230
BOX 2 5 0 0 Κ H A U P P A U G E . Ν . Υ. 117Α7
STAR-TRONICS
INORGANIC ANALYSIS Refractories
Rocks & Minerals
Trice Contaminants Major S Minor Elements Consultation
Micro-techniques
SOUTHWESTERN ANALYTICAL LABORATORIES 17311 El Camlno Real, Houston, Tx. 77058
(713) 488-3744
INDUSTRIAL A N D G O V E R N M E N T ELECTRONIC S U R P L U S PARTS & PIECES FOR SCHOOLS, SHOPS. HAMS & HOBBYISTS
S E N D FOR OUR LATEST ALL DIFFERENT MONTHLY PICTURE CATALOG. N O W !
Box 17127, P o r t l a n d . O r e . 9 7 2 1 7
r— Do you need? ECONOMY GRADE NMR SOLVENTS Acetone ck 99% 50g $37.50 Benzene d„ 99% 50g $45.00 Chloroform d 99.6% 500g $34.00
BIO-RAD Laboratories
3?nd & Griffin Ave.. Richmond, CA 94804
CABLE ADDRESS: SACTEX
PROMPT
SHIPMENT
TETRAMETHYL- & TETRAETHYLAMMONIUM COMPOUNDS:
Water analyzers. 94-page catalog on water t e s t kits with specs, ap plication info, prices. A 97
Bisulfat e - Bromide - Chloride - Fluoborate - Hydroxide
Water analyzers. S i m p l i f i e d water tester in h a n d y carrying case, ready for 27 different tests. A 98
Iodide - N i t r a t e - Sulfate From technical and industrial grades to highly purified polarographic grades.
SOUTHWESTERN ANALYTICAL CHEMICALS • r BOX 4SS — AUSTIN, TEX
Water pollution. Booklet f e a t u r e s t e s t kits for aquatic ecology and pollution studies. A 99
L H C f V l l C A L b ARIA 512 444-3626 —literature on request
Water purifiers. Guide shows how t o choose t h e right cartridge t o m a k e pure water. A 17 X-ray analysis. New hardcover tutorial book on contemporary energy dispersive x-ray analysis. A 64
Product Capsules . . . an AC service for subscribers Presenting Short "'refreshers" on last month's ads in order to help you obtain free information of value to both you and your company
GAS ANALYSES Mats Spectrometry · Gaa •Chromatography Leak Detection Vacuum and Inert Gaa ANALYTICAL Fusion
GOLLOB
SERVICE INC.
47 lalustrill Mat, I t r t i l n H«i|Ml, Κ. Ι. Ι7Ι1Ι Ml «4-1131 _ _ _ _ _ ^ _
ASA TAKES MOSSBAUER TO EXTREMES 4.2°K to 100Q°K Everything for Mossbauer Spectroscopy: • Cryogenics
Rates Available on Request
ANALYTICAL CHEMISTRY D o n n a C. Bifano Production Assistant
· Super Conducting Magnets
• Vacuum Furnaces
· Research & Educational Systems • Backscatter Detectors · Consulting Services
Austin Science Associates, Inc. P.O. Box 7728 Austin, Tx 78712 Phone 512-327-1297
142 East A v e . Norwalk, Conn. 06851 203-853-4488
ANALYTICAL CHEMISTRY, VOL. 44, NO. 14, DECEMBER 1972
89 A
