N e w Products

Labwareand instruments 201 Dispensers. Semiauto­matic diluters and dispensers handle volumes from 2.5 μL· to 10 mL including corrosive, hot, and high-viscosity fluids. Hamilton

202 Foamer. Small-batch portable foamer for testing ingredients before full-scale miking has capacity of 1 to 80 lb per hour at 0.6 final specific gravity. Oakes Ma­chine

203 Syringe filter. Dispos­able, preassembled unit pro­vides leakproof seal with both standard and Luer-lock syringes, has acrylic housing and cellulose acetate mem­brane filter. Nalge

204 Halogen analyzer. Screening analyzer for or­ganic halogens measures both purgeable and nonpurge-able compounds. Ol Corp.

205 Moisture measurement. Designed for precision mea­surement of moisture in gases or liquids, unit pro­vides direct digital readout over range of -110 to 60 °C and pressures to 5000 psig. Ondyne

206 Water purification. HPLC-grade water of consis­tent purity available on de­mand using organic scaven­ger resin cartridge combined with low-extractable mem­brane filtration. Millipore

207 LC converter. Liquid pump head assembly readily converts pump module from analytical to preparative op­eration. Du Pont

208 Gel destainer. Destain-ing/agitating system me­chanically removes non-bound dyes or stains to sim­plify analysis of proteins in gel electrophoresis. I2R

209 Hydrogen purifiers. Units produce ultrapure hy­drogen from commercial quality gas at capacities of 2 to 100 standard cu ft per hour. Johnson Matthey

210 Filter. Low-pressure inlet filter for HPLC pumps protects pump components from mobile phase particles while introducing little pres­sure drop. Scientific Sys­tems

211 Concentrator. Unattend­ed, low-cost system concen­trates and/or filters macro-molecules of known molecu­lar weight with reusable preassembled membranes. Bio-Molecular Dynamics

212 Metering pumps. Pumps designed for precise control of small liquid flow streams handle many laboratory fluids including slurries, sus­pensions, emulsions, sol­vents, and viscous concen­trates. Fluid Metering

213 Microfilter. System for filtration of extremely small samples from 20 μ\- to 2 mL through centrifugation mini­mizes sample loss. Schleicher & Schuell

214 Hydrocarbon separa­tion. HPLC column features specialized packing that sep­arates saturates, aromatics, and polars in crude oils, syn­thetic fuels, and residual fuel products. Waters

Plant equipment and instruments 215 Feedback transmitter. Built-in transmitter in heavy-duty valve actuator line pro­vides positioning signal for indicating and recording in­struments at remote loca­tions. Foxboro/Jordan

216 Arsine/phosphlne moni­tors. Gas monitors detect ar-sine and phosphine sepa­rately or in combination using photoionization detec­tor with microprocessor-con­trolled gas chromatograph for automatic zeroing and calibration. Airco

217 Control valve. Tempera­ture-actuated control valve senses process fluid temper­ature and regulates flow of steam to tracing lines. Ogontz Controls

218 Nickel stripper. High­speed cyanide-free immer­sion system strips all types of electroless nickel depos­its from ferrous-based alloys. Allied-Kelite

219 Resistivity controller. Digital indicator/controller measures solution resistivity referenced to 25 °C for both deionized and reverse osmo­sis systems. Thornton Asso­ciates

220 Tubing bundles. Stain­less steel tubing bundles provide reliable pneumatic and hydraulic control for pro­cess applications in corro­sive environments. Eaton

221 Pumps. Cartridge rotary vane pumps can draw vacu­ums as low as 0.5 μπι. Gast Manufacturing

Literature 222 Extrusion systems. Newsletter on improving reli­ability and efficiency of ex­trusion systems offers sug­gestions for improving on-stream factors and reducing unscheduled downtime. Wer­ner & Pf leiderer

223 Atomic absorption spectroscopy. Report dis­cusses interferences occur­ring in determination of lead in presence of various an­ions by furnace atomizer atomic absorption spectros­copy. Instrumentation Labo­ratory

224 Microprocessing. Bro­chure describes self-learning package containing 32 taped lectures, single-board com­puter, 4 input/output mod­ules, and power supply for industrial training in micro­processing essentials. Wa­terloo Distance Education

225 Inorganics. Catalog lists high-purity inorganic materi­als, spectrochemical stan­dards, and sample prepara­tion equipment. SPEX Indus­tries

226 Alkanolamides. Com­prehensive technical bulletin includes data on viscosity re­

sponse, foam enhancement, concentration effects, toxici­ty, and storage and handling of alkanolamide surfactants. Henkel

227 HPLC equipment. Cata­log and reference guide de­scribes solvent delivery pumps and variety of detec­tors measuring UV absorp­tion, fluorescence, refractive index, electrochemistry, and conductivity. Anspec

228 Head-space tech­niques. Booklet summarizes literature currently available in head-space gas chroma­tography techniques, includ­ing complete reference and short abstract for each entry. Perkin-Elmer

229 Spectrophotometer cells. Catalog lists standard and special cells such as an­aerobic, micro, water-jack­eted, and others in wide vari­ety of materials. Precision Cells

230 Energy-dispersive x-ray microanalysis. Brochure de­scribes advanced analytical techniques including digital elemental mapping, electron loss, and Auger spectrome­try. Link Systems

Chemicals and materials 231 4,4'-Diaminobenzani-lide. Chemical intermediate can be used to replace ben­zidine in manufacture of di­rect black dyes. Thiokol

232 Boron tribromide. Elec­tronic-grade, water-white 99.9999%-pure boron tri­bromide is packaged in sealed borosilicate glass am­pules. Transene

233 Precious metals. Silver, gold, platinum, palladium, iridium, rhodium, ruthenium, osmium, and rhenium salts available in solid form or in solution. Degussa

For Information on these Items or numbered ads, see Reader Service Card

Dec. 7, 1981 C&EN 65