A NEW APPARATUS FOR CONTROLLED RELEASE OF CELLULAR COMPONENTS FROM VARIOUS TISSUES
MANUFACTURERS' LITERATURE
Counting Rate Meter. One catalog page describes and illustrates the Model 511 modified Oak Ridge Q1511 design counting rate meter. Radiation Instrument Development Laboratory. 20
' HYDRAULIC ' TISSUE HOMOGENIZER
Teflon Gaskets and O-Rings. Gaskets, back-up rings, and 0-rings for use with acids, alkalis, and solvents are described in a six-page brochure. Service and mechanical recommendations, as well as data on operating pressures are included. Crane Packing Co. 21
Emonuel-Chaikoff *
•
Homogenization quickly and easily w i t h tissues usually regarded as difficult to homogenize.
•
Complete disruption of nuclei or high yields of intact nuclei are obtainable.
•
Two models
are
MODEL 10 (Pat. App'd For!
available.
REF: Emanuel & Chaikoff, Biochem, Bïophys, Acta, 24(1957} WRITE TO:
MICROCHEMICAL SPECIALTIES CO. 1834 U N I V E R S I T Y
AVENUE
· BERKELEY 3,
CALIFORNIA
Analysis Applications. Five separate reports are given on fluorescence spectrophotometry, near infrared spectrophotometry, analysis of aerosol-type propellants by gas chromatography, the spectrophotometer in reagent production, and sulfur determination by the spectrophotometric method. Beckman/Scientific Instruments Div. (Package No. 4-1). 22
For further information, circle number 98 A-1 on Readers' Service Card, page 87 A
Primary Pressure Standard. Description and specifications for the Type 6-201 primary pressure standard are given in a three-page bulletin which also includes a price list. Consolidated Electrodynamics Corp. (Bull. No. 1681). 23
W h y the MC&B RECTIFICATION SECTIONS are SO BUSY. . . While we manufacture
m a n y of our
4500
Electromanometer. Two-page bulletin on high-speed electromanometer gives features and suggests applications. Description of its operation and a table of specifications are included. Consolidated Electrodynamics Corp. (Bull. No. 1586). " 24
l a b o r a t o r y chemicals, we obtain m a n y others from all over t h e world. W h a t e v e r t h e source, we m a k e sure t h a t every item we sell meets t h e same quality s t a n d a r d time after time. This keeps our Distillation and Recrystallization sections on t h e go.
Materials
may
v a r y from lot to lot when we receive t h e m , b u t not when we ship t h e m !
You can always
depend on M C & B quality.
Matheson
Coleman & Bell
Division of the Matheson Company, Inc. Norwood (Cincinnati), Ohio; East Rutherford, N. J.
for runner inrormauon, circle numoer ao A-Z on Keaaers service uaro, page »i A 98 A
·
ANALYTICAL CHEMISTRY
Laboratory Balances. Two balances, one of 100-g. capacity for analytical work and the other of one-kg. capacity for bulk weighing are described in a twopage data sheet. Prices are included. Arthur S. LaPine & Co. 25 Fume Hoods. Data sheet describes closed type fume hoods for industrial, educational, and hospital laboratories. Accessories are also listed. Arthur S. LaPine & Co. 26 Crystal Lattice Models. Bulletin lists crystal lattice models for use in basic and advanced school courses, and industrial research laboratories. Models are of chemical elements, compounds, minerals, and alloys. 6 pages. Arthur S. LaPine & Co. " 27
