Pittsburgh Conference
LUFT INSTRUMENTS, INC. Old Winter St. Lincoln, Mass. 01773 Exhibiting: Master controller for au tomation of batch and continuous pro cesses; accessories for time-sharing, servo operation, titrations, Karl Fischer mois ture, etc. MAGNION DIV. VENTRON INSTRUMENTS CORP. 144 Middlesex Turnpike Burlington, Mass. 01803 Exhibiting: Model ER-12X solid state X and Ka-band electron spin resonance spectrometer system with klystron power supply; Model SE-30 solid state 5 to 100 MHz pulsed spin echo N M E spec trometer; Model STC-1055 variable tem perature control ; Model 420 4-inch high performance variable air gap laboratory electromagnet ; Model 1520 high regu lation magnet power supply.
PRESSURE-LOK GAS SYRINGES •
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markedly superior for storing, transporting, and injecting gas samples
MALLINCKRODT CHEMICAL WORKS Second and Mallinckrodt St. St. Louis, Mo. 63160
O LEAKTIGHT... from vacuum ... to 250 psi, and it stays tight. Unique Teflon plunger with an internal 0-ring for a lastingly resilient seal. No cold-flow leakage, as with other Teflon seals. © FRONT LOCKING mechanism. Two turns of the nosepiece-valve handle locks-in the sample for storage, for transport, or for pre-pressurizing to inlet pressure before injecting. Q NO DEAD VOLUME. The Teflon plunger bot toms against the barrel plug at the zero point, insuring accurate measurement. Ο POSITIVE REAR PLUNGER STOP. Plunger cannot blow out of the barrel at high pressures. Stop is threaded for disassembly, hexagonal flats prevent rolling and provide secure finger grip. 0 INTERCHANGEABLE PARTS. Special or re placement needles and other parts are available from stock for on-the-spot maintenance or cus tom modifications. *DuPont Trademark
Exhibiting: ChromAR sheet for ana lytical and preparative chromatography; ScintillAR and other high purity sol vents; new Amberlite ion exchange res ins; AR plastics labware. MATERIALS ANALYSIS CO. 1060 East Meadow Circle Palo Alto, Calif. 94303 Exhibiting: High resolution Model 700 scanning electron microscope; electron microprobe analyzer and scanning elec tron microscope, Model 400S. MATHESON GAS PRODUCTS P. O. Box 85 East Rutherford, N. J. 07073 Exhibiting: Flo-Tronic flowmeter, employs a new thermal technique for low-cost accuracy; linear mass flow meter; high purity helium, minimum purity 99.9999% ; primary standards, ex tremely high accuracy calibration gas mixtures made gravimetrically ; stainless steel high purity regulators.
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PRECISION
Exhibiting: NP-System 1000, consist ing of thirty-three electronic and optical modules for electro- and photo-analytical chemistry, instrument development, and research; introducing a new double beam chopper module, and an all solid state electrometer/operational amplifier. McPHERSON INSTRUMENT CORP. 530 Main St. Acton, Mass. 01720
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McKEE-PEDERSEN INSTRUMENTS P. O. Box 322 Danville, Calif. 94526
P.O. Bo, 1511? · Bâton Rouge, La. 70815 · (504) 924-1720
m NAME
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Pressure-Lolc gas syringes are
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TITLE
COMPANY NO. 306001-A V O L . ι ce. S36.00
STREET CITY STATE
Circle No. 205 on Readers' Service Card
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See ad page 247 ACS Lab. Guide VOL. 4 1 , NO. 2 , FEBRUARY 1 9 6 9
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