New Products SCALE-UP TO PREP HPLC :
The Resolver SepTech ST/Lab 8 0 0 A
DMS 200 U V-vis spectrome ter is suitable for use in phar maceutical and industrial ap plications. The system fea tures a small cassette that provides an applications-ori ented soft-key menu from which the analyst establishes data and mathematical rou tines to be used in calculating the final result. Varian 403
up to four polychromators at the same time, and a computer-controlled system provides video and printed output of an alytical results. Spectro 421
Particle size analyzer
• Ca, CA, Ce, Cie, HIC, Silica Packing Media
Model 2010 combines a scanning laser measurement system with an image analysis system and measures particles from 0.7 μΓη to 1200 μιη in all media. Compatible with an augmented IBM PCXT, the analyzer provides data that can be presented in terms of statistics, den sity and distribution, volume, and num ber. An optional image analysis acces sory includes all hardware and software needed to acquire images of the sam ple. Brinkmann Instruments 422
» 1 , 2 , 3, or 4-inch I.D. MACROBORE Columns
Solvent delivery system
> Multi-Gram Sample Loads > 1 8 0 0 p.s.i. Capability > Double Diaphragm Pumps for Sample Protection • Continuous Gradient Formation • 1 6 0 0 mL/min. Capability
• Automation Module Available
SepTech SEPARATIONS TECHNOLOGY
SM-90 can mix four solvents, allowing rapid HPLC method development and optimization. Solvent mixing and flow are controlled by the keyboard or an RS-232C computer interface. A threehead pump design provides precise flow control with minimal pressure pul sations. The Anspec Co. 423
Your Prep/Process HPLC Company
Chemicals P.O. Box 6 3 , 2 Columbia Street Wakefield, R.I. 0 2 8 7 9 (401) 789-5660
CIRCLE 189 ON READER SERVICE CARD
meters. It is certified for the wave lengths of 14 spectral transmittance minima between 240 and 650 nm, with an estimated uncertainty of 0.1 nm. NBS 424
XRF standards Standards for the XRF determination of chlorine, sulfur, lead, and bromine are made in a low-viscosity oil and are available in concentrations of 0.0025-0.4% for chlorine, 0.05-1.0% for sulfur, 0.1-0.9 g/L for lead, and 0.1-0.9 g/L for bromine. Other concen trations can be made to order. Micro graphics 425
Software Laboratory management VG Manager, a modular laboratory man agement software system, can collect and process data from a number of chromatographs as well as from a wide range of analytical instruments. Fea tures include software developed in col laboration with chemists and continually updated, DEC-supplied and supported hardware, and automatic or manual peak processing. VG Instruments 428
SRM
NMR
SRM 2034, Holmium Oxide in Perchlo ric Acid Solution, is designed for use in checking the accuracy of the wave length scale of spectrophotometers in the UV and visible ranges. It consists of a solution of 4 % holmium oxide in 10% perchloric acid, sealed in a stan dard 10-mm light path silica cuvette and compatible with standard spectrophoto
VNMR data-processing package runs on VAX or MicroVAX computers. With VNMR, several users can simultaneous ly process, display, analyze, and plot NMR data from terminals connected to a central VAX or MicroVAX. VNMR re sponds to the same set of commands as those found on Varian NMR instru ments. Varian 429
670 A • ANALYTICAL CHEMISTRY, VOL. 58, NO. 6, MAY 1986
