New Products Torrgett getter-ion vacuum pump with built-in stall resistance has a speed of 2750 I./sec or more. Completely stable pumping of noble gases, even at 10"4 torr is provided by continuous coating of cathodes. This pump is lightweight and easily installed, and is economical compared to conventional sputter-ion pumps. Veeco Instruments, Inc. 516681-8300 408
neuu I U ^ strip chart
Algotronic programmable printing-cal culating system has 64 memory reg isters of which 32 may be used as pro gram registers giving an internal program capacity of 320 steps. Special function keys for log, sin, cos, arc tan, exponential, and square root are in cluded. Programming is from the key board, and the jump and three condi tional jump keys permit looping and branching decisions to be executed. The calculator can be used with the company's dilector punched tape reader for external entry of programs and constants. $3250. Diehl Calculating Systems. 212-751-7374 409 Gas purifying traps for removing water and hydrocarbons combine indicating molecular sieve with high activity char coal in a disposable cartridge. Traps will withstand pressures to 100 psi, are fabricated from machined aluminum ends, heavy wall lA'm- lucite tube, and provided with V^-in. Crawford fittings ($42.50 for 3) or y 8 -in. pipe thread ($39.50 for three). Guild Corp. 412921-1670 410 Detector multiplier increases the sensi tivity of gas chromatography detectors by a factor of 20. The instrument multiplies the signal with built-in stray and random noise rejection. The in creased sensitivity also permits opera tion of a thermal conductivity detector at lower filament currents resulting in extended filament life. $640. SKC, Inc. 412-921-4344 411 Counterbalance scales for weighing up to 20 grams feature a rapid end-point weighing. Maximum capacities (rated, unextended) are 10 mg, 100 mg, 1 gram, and 10 grams. Each model (eight in all) is available in both digital and analog readout. With special ex tender, capacities are doubled. The 10-mg unit gives 5-^ig accuracy; the 10gram unit is accurate to 5 mg. Prices start at $375. August Sauter of Amer ica, Inc. 212-685-6659 412 Stabil-Therm laboratory ovens with 25in. W χ 20-in. D X 19y 2 -in. H work chambers offer a temperature range to + 2 6 0 ° C . Control tolerance is ± 0 . 5 ° C ; stability is ± 1 . 0 ° C . $539 t o $726. Blue M Electric Co. 312-385-9000 4 1 3
VOM 11 $1245 A full $200 less than competition
records the output from a spectrophotometer directly 1 in percent Transmittance ! or Absorbance units! I ι I j I
One operating feature stands out: Any 10% part of the full scale output from the Spectrophotometer can be expanded to the full 10" chart width! This fine critical resolution is only one feature of the Model 11. Designed to provide flexibility for the widest possible variety of recording applications, the unit provides a five chart speed range from .05 to 20 in/min. and a built-in event and speed marker. BRIEF SPECIFICATIONS: » High input impedance l *
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New disposable fibre tip pen
/2 second full scale pen response
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Zener reference supply
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1 mv full scale sensitivity
Remote pen and chart control
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Full price: $1245.
1
Write tor VOM 11 Bulletin
houston
instrument
houston instrument
European Office
DIVISION CFBAUSCH&LOMB
Johannesklrchner Strasse 17
8043 Unterfohrlng, MiJnchen.W. Germany
0Θ11 97-1673
CIRCLE 7 1 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 43, NO. 10, AUGUST 1971 ·
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