BECKMAN DK RECORDING SPECTROPHOTOMETERS Accenting the growing trend toward faster chemical analyses • • • • • •
Automatic recording with accurate double-beam system Complete ranges: ultraviolet, visible, and near-infrared Wavelength range—200 to 3,000 mu Recording in percent transmittance or linear absorbance Differential recording for nearly identical samples High resolution in the increasingly important near-infrared region • A design which accepts a variety of accessories
. . . offering
a choice of two
models— Full view flat chart M o d e l DK-2
The b u i l t - i n recorder uses 11 χ 17 f l a t c h a r t paper, preprinted in wavelength. Can be used for Ozalid reproductions. Con venient horizontal reading of complete range while recording. Linear wavelength accessory available. Available complete, and at a substantial saving, by the use of your present DU.
Same superior features as DK-2 but with strip chart presen tation for un limited chart expansion, linear wavelength.
Tracer31
Spectrophotometer. Eight^page bulle tin contains features, specifications, ap plications, operation, and bibliography on recording spectrophotometer. Gen eral Electric Co. (GEC-307B). 32 Tetrahydrofurfuryl Alcohol. Booklet of 28 pages includes physical data, chemistry, uses, safety information, and physiological data for tetrahydrofur furyl alcohol. Chemicals Department, Quaker Oats Co. 33 Spectrochemical Analysis Circuit Systems. Eight-page catalog describes self-contained unit which furnishes com plete range of circuits for spectrochemi cal analyses. Jarrell-Ash Co. (Cat. XX V 2-56). 34 Molybdenum Carbides and Nitrides. Six-page bulletin summarizes applica tions; physical and mechanical proper ties; and preparation of molybdenum carbides and nitrides. Climax Molyb denum Co. (Bull. Cdb-7). "35 Inductronic Instruments. Twentj'page bulletin reprints seven technical articles on company's line of inductronic amplifiers and instruments. Weston Electrical Instrument Corp. 36 Nuclear Instruments. Four-page bul letin describes meters, counter tubes, and assayers for use in nuclear measure ments. Anton Electronic Laboratories, Inc. 37
Automatic Control Equipment. Nineteen-page catalog presents com plete picture of company's products and services offered for field of automation. Automatic Temperature Control Co., Inc. (Cat. D-31). 39 N o w standard with
Nylab maintains a qualified technical and servicing organisation. We invite inquiries on your spectrophotometric problem.
NEW YORK Laboratory Supply
76 Varick Street, New York 13, Ν. Υ.
LABORATORY SUPPLIES
For further information, circle numbers 64 Λ-1,
64 A
company's three laboratories. lab, Inc.
Glass Pipe and Fittings. Bulletin of four pages describes company's line of glass pipe and fittings. Fischer & Porter Co. (Cat. 80-10). 38
Continuous strip chart Model D K - 1
KEY TO ALL
MANUFACTURERS' LITERATURE
COMPANY INC.
Telephone:
CAnal
Hydrogen Sulfide Detector. Fourpage bulletin describes an improved type hand-operated instrument for detection of hvdrogen sulfide. Mine Safety Ap pliances Co. (Bull. 0805-1). ' 40 Lithium Bibliography. Supplement number four contains abstracts of 271 papers (1954-1955) on use of organolithium compounds in organic synthesis. Lithium Corp. of America, Inc. 41 Testing Instruments. Four-page bul letin briefly describes 31 instruments for
6-6504
64 A-2 on Readers' Service Card, paze 53 A
For further information, see coupon on page 53 A ANALYTICAL
CHEMISTRY
