MANUFACTURERS' LITERATURE Environmental Cabinets. A 6-page bulletin, No. 643, pictures and describes constant temperature and humidity cabinets. Operating characteristics and construction details are given. Blue M Engineering Co., 138th and Chatham Sts., Blue Island, 111. 625 Laboratory Furniture Care. A 4-page brochure covers day by day and monthly maintenance instructions for laboratory furniture and equipment. Scientific Apparatus Makers Assoc, 20 North Wacker Dr., Chicago, 111. 60606. 626 Color Measuring. Bulletin HB522, 2 pages, describes the Signature Model Color-Eye, a four tristimulus filter, high sensitivity, combination colorimeter/spectrophotometer. Instrument Development Laboratories, Attleboro, Mass. 627 Crucibles and Tubing. A 4-page brochure describes Rotosil fused silica tubing and crucibles for laboratory use. These items are acid proof, resistant to high temperature and thermal shock, and have exceptional electrical insulating value. Engelhard Industries, Inc., 75 Austin St. Newark, N. J. 07114. 628 Stirrers and Hotplates.
Bulletin 14-
510-25, 8 pages, describes magnetic stirrers and stirring-hotplates. Included are the Wobbulator, and the Oscillating Hotplate. Fisher Scientific Co., 300 Fisher Bldg., Pittsburgh 19, Pa. 629 Internal
Reflection
Spectroscopy.
Reprints are available of a paper entitled, "The Identification of Fibers and Fabrics by Internal Reflection Spectroscopy." Included are information on obtaining infrared spectra without the need of grinding up the sample or casting a film, a bibliography, and over 40 multiple internal reflection spectra of synthetic and natural fibers. Wilks Scientific Corp., 140 Water St., South Norwalk, Conn. 630 Gas
Chromatograph
Applications.
The following gas chromatograph applications data sheets are available: No. GC-DS-007, analysis of irradiated and nonirradiated beer; No. GC-DS008, direct gas chromatographic analysis of various wines; No. GC-DS013, determination of halothane in blood using electron capture detector; and No. GC-DS-014, determination of the alcohol content in blood. PerkinElmer Corp., Main Ave., Norwalk, Conn. 631
CALIBRATION ACCURACY: METICULOUSLY MAINTAINED!
NALGENE®
UNBREAKABLE
P I P E T S offer all the accuracy you've been accustomed to from glass—without any of the hazards. Every Nalgene pipet is individually calibrated for maximum precision. The limits of error do not exceed 0.06 ml for the largest size pipets. What's more, you can read a Nalgene unbreakable pipet easily and accurately. Big, bold "Magni-Vue" markings, in vivid color, are fused on . . . permanently. These markings cannot be removed chemically or mechanically. Repeated autoclaving will not dim their original appearance. They can't fade, rub off, scrub off or wear off—ever! Nalgene unbreakable pipets are made of rugged, chemically-resistant polypropylene. This non-reflective material prevents bothersome light glare. You see the entire liquid column clearly. There's no meniscus to interfere with the accuracy of your readings. Nalgene unbreakable pipets are available in transfer, serological and measuring styles, sizes 1 ml to 10 ml. Priced from $2.10 to $2.80 each. See your lab supply dealer, or write Dept. 1112, The Nalge Co., Inc., 75 Panorama Creek Drive, Rochester, New York 14625.
NALGENE LABWARE
Leader in quality plastic labware since 1949
Circle No. 80 on Readers' Service Card VOL. 36, NO. 13, DECEMBER 1964
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