MANUFACTURERS' LITERATURE
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ionXelmitge LABORATORY SIZE OF CARTRIDGE DE-IONIZER GIVES MINERAL-FREE WATER The latest development in ionXchange equipment is the mixed-bed de-ionizer, which combines both anion and cation resins in one vessel or tank. The unît shown below is a miniature model of such a de-ionizer, made up in such a manner as to be an ideal accessory in any laboratory where mineralfree water is wanted occasionally in comparatively small quantities. The ILLCO-WAY Cartridge De-Ionizer consists of a plastic tubular column containing 3 lbs. of mixed resin. When the resins are exhausted, as shown by a change in color, the entire cartridge can be discarded and a fresh one substituted. N o electrical connections are needed. The column can be clamped, as shown, in any convenient location or manner. RESEARCH MODEL Produces water comparable to that obtained by triple distillation. Removes all ionizable solids, including silica and CO2.
CAPACITY - 4 5 0 grains
FLOW RATE - 5 g P h PRICE (FOB Rockford) — $12.50 BRACKET (Extra) — $5.00 UNIVERSAL MODEL Produces water comparable to that obtained by single disfiliation. Removes all ionizable solids except silica and CO2. CAPACITY — 900 grains FLOW R A T E - 5
gPh
PRICE (FOB Rockford)-$9.75 BRACKET (Extra) — $5.00 Write for fully descriptive literature Bulletin CA-254
ILLINOIS WATER TREATMENT CO.
ion 'ilinr'i
Xchange '|i
835 CEDAR ST. ROCKFORD, ILLINOIS
NEW YORK OFFICE. H I Ε. 44TH ST., NEW YORK 17. N.Y. CANADIAN OIST: PUMPS i SOFTENERS. LTD. LONDON, ONT.
Circle No. 54 A-1 an Readers' Service Card, page 45 A
54 A
polarographic measurements designed for use of students. Leeds & Northrup Co. (Data Sheet E-954 [1 ]). 26 Pellet Press. Two-page specification sheet describes features and operation of hand-operated laboratory press with interchangeable punch and die sets for compressing granular or powdered ma terials into pellet form. Parr Instru ment Co. (Spec. 2811). 27 Tubes for Healing Jackets. Bulletin of 8 pages describes properties and use of borosilicate glass tubes with trans parent, electrically conductive film bonded to outside surface useful for laboratory heating jackets. Corning Glass Works (E-C Coated Tubes). 28 Thermocouple Standard. Pamphlet of 14 pages contains tentative standard on temperature-e.m.f. relation for ironconstantan thermocouples prepared by Recorder-Controller Section of Scientific Apparatus Makers Assoc. 29 Thermoelements. Six-page folder discusses noble metal and base metal thermoelements, as well as porcelain and metal thermocouple protection tubes and lead wire. Charles Engel hard, Inc. 30 Water Baths. Constant temperature serological water baths for temperatures to 60° and 100° C. cataloged in 8-page bulletin. Chicago Surgical & Electrical Co. (Sec. 3, Cat. 100). 31 Radiation Measuring Equipment. Catalog of 40 pages describes line of radiation measuring instruments, in cluding scalers, count rate meters, Geiger counters, proportional counters, scintillation counters, and other equip ment. Nuclear Instrument & Chemi cal Corp. 32 Hand Calculator. Booklet of 16 pages describes small size calculating machine made in Liechtenstein that will add, multiply, divide, and extract square roots. Curta Calculator Co. 33 Gas Regulators. Bulletin of 16 pages catalogs various types of high pressure, corrosion resistant units for regulating gas pressures. Victor Equipment Co. (Bull. SU). 34 Timers. Line of 60 different stop watches with coil spring shock absorbers for heavy duty service described in 12page catalog. Arthur S. La Pine & Co. 35 Motors. Four-page folder describes small geared motors suitable for labora tory applications with stirrers, pumps, timers, feeders, and other equipment. Merkle-Korff Gear Co. (Model SGI5). 36 For further information, see coupon on page 45 A
FOR YOUR MOST EXACTING REQUIREMENTS V I T R E O S I L ® (vitreous
silica)
tubing has numerous de sirable characteristics so i m p o r t a n t for produc tive laboratory applica tions. These
include:
chemical and catalytic inertness, usefulness to 1000° C and over, a n d under extreme thermal shock, homo geneity, absence of metallic impurities, unusual cal
electri
resistivity,
and
maxi
mum
ultra-
v i o l e t transmis sion (in trans parent qual ity).
VITREOSIL is a v a i l a b l e f r o m stock in four dependable types:
• • • •
TRANSPARENT GLAZED SAND SURFACE SATIN SURFACE
Stock sizes (transparent) up to 3 2 m m . b o r e ; o p a q u e to 4W bore a v a i l a b l e immediately. Larger diameters supplied on special order. OBTAINABLE IN ALL STANDARD LENGTHS
Bulletin No. 18 with specifications and prices, sent upon request.
THE THERMAL SYNDICATE LTD. 14 BIXLEY HEATH LYNBROOK, Ν. Υ. Circle No. 54 A-2 on Readers' Service Card, page 45 A
ANALYTICAL
CHEMISTRY
