New Products
Hydrocarbon Analyzer
Whatman
The Model 400 hydrocarbon analyzer first commercial flame ionization analyzer to equal the response speed of infrared instruments. This equipment is designed for both ambient air monitoring and vehicle emissions studies. Full-scale ranges are from 0 to 1 ppm; sensitivity is adjustable in steps of Xl, X10, XlOO, and X1000 plus a continuous span potentiometer to permit setting any full-scale range from 1 to 10,000 ppm. About $2000. Beckman Instruments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634. 714-871-4848 is the
PHASE SEPARATING PAPER
430
Particle Mass Monitor Airborne particle
The world's first, fast-acting,
tions
disposable separatory funnel
a new
Whatman No. 1 PS is a water repellent paper that acts as a phase separator In place of conventional separatory funnels... separates aqueous solutions from water immiscible solutions, quickly and conveniently. Because it’s hydrophobic, No. 1 PS retains the aqueous layer while allowing the organic layer to go through filters out any solid that may be present at the time of filtration... and, because it’s paper, it’s disposable.
can
mass
concentra-
be determined in minutes
by
self-contained instrument. Concentration range is 1 to 100,000 µ-g!m. The instrument is specifically designed for continuous monitoring of suspended
Electrical output particulate matter. suits this system to air pollution applications; a visual output option in available for industrial hygiene or laboratory measurements. Thermo-Systems, Inc., 2500 Cleveland Ave., N., St. 431 Paul, Minn. 55113
...
No. 1 PS makes prior separation of the phases in a separatory funnel completely unnecessary... saves considerable time and effort in solvent extraction. It gives a complete and rapid quantitative separation of the two liquid phases. There is no loss of materials as with ordinary separatory funnels. Can be used with organic solvents that are lighter or heavier than water.
For further information, send for our free Phase Separating Paper Leaflet.
reeve
angel
H. Reeve Angel & Co., Inc.—Sole Distributor in North America 9 Bridewell Place, Clifton, New Jersey 07014 H. Reeve Angel & Co., Ltd.—Sole
Selling Agents
14 New Bridge Street, London E.C. 4 ©Whatman
144A
.
W& R Balston Ltd., Maidstone, Kent, England Circle No. 60 on Readers’ Service Card
is the registered trademark of
ANALYTICAL CHEMISTRY, VOL. 42, NO. 4, APRIL 1970
Solid-state recording spectrophotometer, the Cary 17, covers the wavelength range from 186 nm to 2.65 microns. Two standard modifications of the instrument are the 171 with a range to 3 microns and the 17H with an enlarge sample compartment (it also adapts for high-temperature studies). Introduced with the instrument is a Spectro System/100, a computer system for reducing spectro photometric data. The system Includes a Varían Data Machine 620/1 general purpose digital computer, a teletype, interface, and a package of unique, modular Cary software. The Model 17 sells for about $23,000. Cary Instruments, a Varían Subsidiary, 2724 S. Peck Rd., Monrovia, Calif. 91016. 415-326-4000 432
