UNIFORM PARTICLE SIZE
NEW PRODUCTS
L C O W I-A Y
PLUS
ionXchange
RAPID GRINDING FOR SPECTROGRAPHIC AND WET ANALYSIS WITH THE N E W
LABORATORY SIZE CARTRIDGE DE-IONIZER GIVES mineral-free WATER
PITCHFORD SELECTIVE UNIFORM PARTICLE SIZE GRINDER
MODEL 3900
ADVANTAGES: •
Particle size uniformity assured with mixtures of hard and soft materials
•
Hard materials grind readily (ex. silicon carbide) as do problem materials (ex. vermiculite)
•
Particle size selection down to minus 4 5 0 mesh
•
Easily cleaned
•
In some cases, formerly impossible spectrographs analyses of pow dered samples are now feasible and practical
PITCHFORD SCIENTIFIC INSTRUMENTS CORP. 501 Castle Shannon Blvd. Pittsburgh 34, Penna. Circle No. 7 on Readers' Service Card
Electrolytic trace oxygen analyzer pro vides continuous analysis of uncombined oxygen in a wide variety of gases and gas mixtures. Standard adjustable full scale range is 10 to 1000 p.p.m., with special models available for ranges from 1 p.p.m. to about 1 % . Lockwood & McLorie, Inc. P-8
D. C. Power Supplies Units available in two scries- provide continuously variable output voltages in the 0- to 50-volt range, drawing from a 105- to 125-volt, single phase, 48- to G2-cyele line. Maximum output cur rent ratings of two, five, ten, and 15 amp. can be obtained. Specifications for Series Y are: regulation, line and load, ± 0 . 1 % ; stability, ±0.25% for 8 hr. after 30-min. warm-up; maximum ripple, 2 mv. ; output impedance, 0.03 ohms. Specifications for Series Ζ are: regulation, line and load, ±0.01% ; sta bility, ±0.05% for S hr. after warmup; maximum ripple, 1 mv.; output impe dance, 0.003 ohms. Both series have 50-jusec. response time and are designed
The ILLCO-WAY Throw-Away Cartridge De-Ionizer consists of a clear plastic column containing mixed-bed ionXchange resins. The mixed-bed ionXchange process will re move all dissolved solids (including, in our Research Model, silica and CO2) so that the effluent is pure enough for the finest analytical purposes. The Cartridge is used also to reduce the interfering ions often found in distilled water. The column is clamped in a bracket, as shown, with tubing and valves to connect to any tap or other water supply. ILLCO-WAY Resins used contain a color indicator which changes from purple to yellow as the resins become exhausted, showing when a fresh Cartridge is needed. RESEARCH MODEL Removes all ionizablc solids including silica and CO2. Average in effluent less than 0.5 ppm. total solids. Capacity, 450 grains as CaC03. Flow Rate, 5 gph. max. Price, $12.50 Bracket, extra, $7.50
UNIVERSAL MODEL Removes all îonizable solids, except silica and C02.Suitablefor general pure water needs. .. Λ nnn Capacity, 900 grains as CaCOa. p | o w Rate, 5 gph max. p r i c e ( $9.75 Bracket, extra, 57.50
Order from your Laboratory Supply House or Write to . . .
ILLCO-WAY
ILLINOIS WATER TREATMENT CO. 8 4 0 Cedar SI. Rockford, III.
NEW YORK OFFICE: 141 E. 44th St., N e w York 17, N.Y. C A N A D I A N DIST.: P u m p l & Softeners, Ltd., London, C a n . Circle No. 45 on Readers' Service Card
144 A
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ANALYTICAL CHEMISTRY
