Manufacturers' Literature
Designed for the potential scientist in your family...
Atomic Absorption. Five pages, G-5, describe flame emission techniques in cluding data and a bibliography. Jarrell-Ash. 617-899-4300 626
Chemistry
Chemistry magazine For the high school or college student whose curiosity of chemistry extends beyond required course work. Eleven issues a year, including a special Summer issue, bring the reader . . . experimental projects and inves tigations .. . news items on recent research developments . . . feature articles on theoretical and applied science . .. book reviews . . . chemical puzzles .. . reader's column. All adding up to an exciting opportu nity tb see chemistry in action—out ol the textbook and in the real laboratory. Order CHEMISTRY now and start an exciting adventure for a young member in your family! Yes—start a CHEMISTRY I one year at $6. I I J ι I
subscription
for
Π Canada, PUAS $7.00 Π Foreign $7.50 Payment must be made in U.S. currency, by international money order, UNESCO coupons, or U.S. bank draft; or order through your book dealer. Send CHEMISTRY to:
ι Name | Address City State I Recipient is a Π student. D other ! Π Check enclosed (payable I Chemical Society). | Π Send bill to:
Π to
Zip teacher. American
ι Name | Address City
State
Zip
• American Chemical Society Publications 1155 Sixteenth Street, N.W. I Washington, D.C 20036 1
E2C
Company Periodicals Requests for copies of the following publications should be sent directly to the address shown. Business or pro fessional letterheads are requested. Instrument News. Vol. 21, No. 2, 16 pages, includes an article on testing a dye laser-illuminated absorption spectrophone. Other articles deal with ac cessories for P-E instruments which im prove performance. Also discussed are the thermomechanical analysis of syn thetic fibers, identifying pollution de posits originating from petroleum oils, and the nmr analysis of phenol formal dehyde resins. Perkin-Elmer Corp., 702-G Main Ave., Norwalk, Conn. 06852. 203-762-1000 Isolines. Eight pages announce the company's recent move to Akron, Ohio; two new products (Bioclean X-100 and MultiJet growth medium/reagent dis penser) ; and a list of fluorogenic en zyme substrates and radioactive com pounds which are available. Isolab, Inc., Drawer 4350, Akron, Ohio 44321. 216-825-4528 Current Laboratory Practice. Vol. 3, No. 1, 24 pages, includes articles on procedures for serum hepatitis screen ing, toxicologieal separations by thin layer chromatography. Other new techniques and products are also cov ered. Gelman Instrument Co., Dept. JL, 600 S. Wagner Rd., Ann Arbor, Mich. 4S106. 3Î3-665-0651 Gas-Chrom Newsletter. Vol. 12, No. 1, 8 pages, describes some new O-rings for gc ; unusual lipids; special solvents; phenyl-substituted silicone phases; and explains the nomenclature of gc support materials. Applied Science Laboratories, Inc., State College, Pa. 16801. 814238-2406
Chromatography Notes. Vol. 1, No. 2, 12 pages, contains articles on determining phthalate plasticizers by liquid chromatography; reproducibility of lc; following the curing temperature effects in epoxy resins by gpc ; new le ri detectors; and others of interest to users of liquid and gel permeation chromatography. Waters Associates, Inc., 61 Fountain St., Framingham, Mass. 01701. 617-879-2000. Bio-Radiations. No. 9, 4 pages, describes a new company thermal column, company flangeless chromatography tubing connectors and valves, and instructions for constructing chromatographic systems. Bio-Rad Laboratories, 32nd and Griffin Ave., Richmond, Calif. 94804. 415-234-4130
What's in a Name? like the S&S series of great RIBBON ashfree filter papers "Ribbon" means only one thing to a chemist. It means the S&S trademark for its series of highest grade filter papers for use in quantitative analysis. S&S grades are identified by color on the box. Scientists who use these analytical working tools claim they are the highest quality, best performing, lowest ash quantitative filter papers on the market. Select from these premium Ribbon grades.
No. 589 BLACK RIBBON
No. 589 6REEN RIBBON
Rapid. Soft. Loose texture. For coarse and gelatinous ppts.
Extra thick. Provides in creased retention with out loss of filter speed.
No. 589 WHITE RIBBON
Ko. 589 BLUE RIBBON
Medium speed and retention. Quantitative gravimetric analysis.
Dense. Highly retentive. Filtration of crystalline materials.
No. 589 RED RIBBON
S&S 589 Ribbon Series Ash-Free Filter Papers-world's finest, but no price premium
Λ
High wet-strength. For very fine precipitates. r
SCHLEICHER & SCHUELL CO., KEENE.H.H.
MAIL 1 COUPON FOR FREE , SAMPLER A
Please send the analytical filter paper sampler which includes black, white and blue high grade analytical filter papers; plus Conversion Table. NAME:
ADDRESS:
CI Π: STATE:
ZIP: AC 714
Circle No. 166 on Readers' Service Card
ANALYTICAL CHEMISTRY, VOL. 43, NO. 4, APRIL 1971
·
133 A
