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face groups (carboxyl, hydroxyl, amino, and avidin), and tagged with different fluorophors. Applications include parti cle concentration fluorescence immu noassay, solid phase for RIA or EIA, nephelometry, and turbidity standards. Pandex 419
MCl's New CA-10Portable Moisture Meter. Wherever you have to take a measurement, the handy CA-10 Portable Moisture Meter makes it easy. This advanced AC/DC unit features a rechargeable battery pack, with battery alarm, that enables 10 hours of continuous field operation. Coulometric Karl Fischer titration and automatic electrolysis con trol assure reliable high precision and speed. Contact MCI today for more information on the efficient new CA-10 Portable ^ ^ ^ J Moisture Meter. * ^ ^ ™ ' •*v-
Endotoxin removal Detoxi-Gel is an affinity chromatogra phy support designed to remove endo toxins from aqueous and physiological solutions. It uses a special ligand covalently bound to an agarose matrix and has a high capacity for endotoxins. Pierce Chemical Co. 420
SRM SRM 1618, vanadium and nickel in re sidual fuel oil, is intended for use as an analytical standard for the accurate de termination of high V and Ni in fuel oils or materials of similar matrices. It con sists of 100 mL of a No. 6 residual fuel oil with nominal concentrations of V and Ni of 423 Mg/g and 75 Mg/g, re spectively. NBS 421
MITSUBISHI CHEMICAL INDUSTRIES LIMITED Instruments Dept., Mitsubishi Bldg., 5-2, Marunouchi 2-chome, Chiyoda-ku, Tokyo 100, Japan Telex: J24901 Cable Address: MBISHICHEMiCAL TOKYO Tel: (03) 455-4220
Prostaglandin E2 kit 125
CIRCLE 139 ON READER SERVICE CARD
Chemists and cooks get better reactions with Experiment with a Chemist aprons. For soup or synthesis, this practical, versatile apron is a winner. Sturdy and handsome heavyweight 100% cotton fabric makes it as useful at the barbecue pit as at the bunsen burner! "Experiment with a Chemist" design in navy and red on natural background, one size fits all. $12.50 each (write for quantity discounts). Phone (202) 872-4588 for credit card orders. American Chemical Society P.O. Box 57136 West End Station Washington, D.C. 20037 Please send m e . "Experiment with a Chemist" aprons @ $12.50 each. Please add $1.90 postage and handling charge per order. In Calif, please add 6% State Tax. Foreign shipment surcharge is $0.75 per apron to Canada; other countries. $1.75 per apron. : I Check e n c l o s e d I I C h a r g e my: LI VISA Π Mastercard I , A C C E S S L l Barclay C a r d A c c o u n t No. Interbank C o d e (MasterCard Only) Exp. Date
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438 A · ANALYTICAL CHEMISTRY, VOL. 57, NO. 3, MARCH 1985
I-RIA kit for measurement of prosta glandin E 2 in biological samples is a se quential overnight assay that allows readings below 2.0 pg/tube using a simple second-antibody procedure. The assay requires 100 μ ι of sample, and the kit contains 100 tubes with stan dard, tracer, antisera, buffer, second antibody, and instructions. Seragen, Inc. 422
Software X-ray fluorescence XRF4 and Corset, designed for IBM PC, Apple I, and CP/M computers, provide data reduction models and fundamental parameters, respectively. XRF4 calcu lates 6 elements for 50 analyses, and Corset manages up to 10 elements. Disk file management routines and sample data files are included. Re search Corporation 424 Signal processing DT/ILS-PC 1, compatible with IBM PC computers, is an interactive digital sig nal-processing package that includes on-line help or prompting. It supports continuous data acquisition to disk at up to 27,500 samples per second. Data analysis features include file manage ment, waveform display and editing, and spectral analysis. Data Translation 425
