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JEOL
235 Birchwood Ave., Canford, NJ 07016 201-272-8820
cotaP lete CIRCLE 129 ON READER SERVICE CARD
A new computerized spectrophotometer for The Mark V, a fully programm a b l e CD system has pre-prog r a m m e d d a t a acquisition, baseline correction, a n d d a t a manipulation routines. Its Basic programming language allows the user to customize the Mark V for his analytical needs with a minimum of effort.
CIRCULAR & LINEAR DICHROISM
MIS 150/200 is a monochromatic illu mination system which can employ a xenon, xenon-mercury, or mercury high-pressure arc lamp up to 200 W. A grating monochromator designed into the system permits the discretely vari able selection of output light wave length. The monochromator can be equipped with an optional motor drive for automatic wavelength scanning at speeds of up to 400 nm/min. Kratos 415
Accessories for UV/Visible Spectrometers Two accessories are available for the company's Models 552 and 559 UV/ Visible Spectrophotometers. SAFE MEMORY, a microprocessor-based ac cessory, provides nine separate memo ry locations for nonvolatile storage of all keyboard operating parameters. The user can, therefore, recall all operating conditions for up to nine different analy ses through a single keystroke opera tion. The other accessory, the INFOMATE printer, can also be used with the Lambda 3 UV/Visible Spectrophotome ter. The INFOMATE printer can provide, on a 5-in tape, a list of every spectro photometer keyboard parameter. Perkin-Elmer 424
Chemicals Activated Support REACTI-GEL (25DF) is an activated sup port for affinity chromatography and en zyme immobilization. Chemically, it is 1,1 '-carbonyldiimidazole activated crosslinked beaded dextran. Its bed vol ume is 3-4 mL/g with an activation level of 100 μηιοΐββ^. It can be direct ly added to protein solution in dry form without prior swelling. $50/5g package. Pierce Chemical Co. 426
Organometallic Salt Standards
Π Stray light 0.005% at185nm. Π Sensitivity 0.01 millidegrees at 220nm. Instruments SA, Inc., J-Y Optical Systems Division, 173 Essex Avenue Metuchen. N.J. 08840 (201) 494-8660, Telex 844516. In Europe, Jobin Yvon Division d'Instruments SA. 16-18 Rue du Canal, 91160 Lonaiumeau, France Tel. 909.34.93 Telex JOBYVON 842- JOBIN Instruments SA, Inc. 692882. J-Y Optical Systems Division
YVON
CIRCLE 94 ON READER SERVICE CARD 1178 A • ANALYTICAL CHEMISTRY, VOL. 5 2 , NO. 1 1 , SEPTEMBER 1980
Twenty-four different organometallic salts in powdered form are available for formulating spectrochemical standard solutions in nonaqueous media. The salts are soluble in various organic sol vents for the analysis of petroleum products for trace-wear metals, crude oils, synthetic oils, fuel and motor oil additives, lubricating oils, food fats and oils, and greases. Each standard is sup plied in 5-g quantities in a glass vial with certification of metal content traceable to NBS values. Chemplex In dustries, Inc. 427
