TAYLOR COMPARATORS
NEWS
2-mg. sensitivity
partaient of Chemistry, Washington Uni versity, St. Louis, Mo. Electron-Nuclear Double Resonance Experiments. GEORGE FBHER, Bell Tele phone Laboratories, Murray Hill, N . J .
Help you maintain UNIFORM
Wednesday, M a y IS, 2:00 to 4:00 P.M. Tissue Culture and Its Developing Significance in Bacteriology and Virology Cttairman. Wilton R. Earle, National Institutes of Health, Bethesda, Md.
precision balances by
Variations in Cell Morphology under Experimental Conditions Commonly Used
TROEMNER
in Tissue Culture.
WILTON R. EAKLE.
Use of Tissue Culture in Virological Re
for trouble-free processing
search.
K A R L C. HABEJ., National I n
stitutes of Health, Bethesda, Md. Commercial Production of Large Num bers of Tissue Cultures of Mammalian Cells.
ANTHONY
J.
GIRARDI,
Micro
biological Associates, Bethesda, Md. Development of a Protein-Free Chemi cally Defined Medium for Cultivation of Cells in Long-Term Tissue Culture. VIRGINIA J. EVANS, National Institutes of
Health, Bethesda, Md. Massive Fluid Suspension Cultures of Established Cell Strains. JAY C. BRYANT, National Institutes of Health, Bethesda, Md.
Accurate, on-the-spot colorimetric t e s t s for p H , c h l o r i n e , b r o
Sarcoma-Producing Capacity and Growth Characteristics of Divergent Lines of Cells Derived in Vitro from a Single Adult Mouse Cell. KATHERINE Κ. SANKORD, National Institutes of Health, Bethesda, Md.
mine, phosphate, Q A C , nitrate a n d metal ions m a d e with Taylor C o m p a r a t o r s give y o u depend able operational data in minutes . . . help you maintain control
of c h e m i c a l
proper
Wednesday, May - 5 , 8:00 to 10:00 P.M.
processes,
Electron Microscopy
w a t e r purification, boiler w a t e r , waste treatment.
Chairman. Albert J. Dalton, National Institutes of Health, Bethesda, Md
Determinations are m a d e in only
Electron Microscopy.
JAMES A. F R E E
three easy steps. E v e r y set in
MAN
LOWE,
Chromium Compounds as Fixers for AND F R A N K
N.
Louisiana
State University, New Orleans, La.
cludes c o m p l e t e i n s t r u c t i o n s , all
Problems of Embedding in Methacryl-
necessary equipment.
ate.
E M I L BORYSKO, School of Dentistry,
New York University, New York, Ν . Υ. Distortion of Tissue Introduced by Thin Sectioning and by the Electron Beam.
Be sure t o use only Taylor reagents a n d accessories with Taylor Com parators t o assure accurate results. AH Taylor liquid color standards carry an unlimited guarantee against fading.
W.A. TAYLOR ACO.N D Circle Nos. 2 S A - 1 , 29 A-2, 2 9 A - 3 on Readers' Service Card, page 77 A
MORGAN,
College
Columbia
Analytical Session at Industrial Hygiene Meeting
SEE YOUR DEALER for Toylor sets or im mediate replacement of supplies. W r i t e for FREE H A N D B O O K " M o d e m p H and Chlorine Control". Gives theory and application of p H control; illustrates and rje\ scribes full Taylor line.
1 7306 YORK RD. · BALTIMORE-4, ΙΛΟ.
COUNCILMAN
of Physicians and Surgeons, University, New York, Ν . Υ.
I
Several analytical papers in t h e field of industrial hygiene will be presented a t the a n n u a l meeting of t h e American Industrial Hygiene Association t o be held a t t h e Kiel Auditorium, St. Louis, April 20 to 26. In addition to such topics as radia tion, air pollution, toxic materials, a n d engineering methods for controlling in dustrial hazards, there will be eight analytical papers presented on T h u r s day afternoon, April 25. T h i s portion of the program appears below.
No bands, no wires, no springs to bend or break F a m o u s T B O E M N E K precision bal ances reflect t h e loving c r a f t s m a n s h i p a n d skill that g o into t h e i r m a n u f a c t u r e . H i g h sensitivity ( 2 m g . ) fits them for m a n y d e t e r m i n a t i o n s once reserved for t h e o v e r w o r k e d analytical balance. L o n g p r o d u c t i v e life assured t h r o u g h construction with s u p e r - h a r d tool-steel knife edges a n d a g a t e bear ings. T h r e e models, all s a m e c a p a c i t y , sensitivity, m e c h a n i s m — p r i c e d from 8 (Model W-33 i l l u s t r a t e d ) . . Capacity: 1 2 0 g m . ( 4 o z . ) Sensitivity: 2 rng. Sensitivity Reciprocal: 6.5 m g . (.1 grain) B e a m graduated 1 g m . χ 10 m g . a n d 15 gr. χ .1 gr., or in m g . a l o n e . This b e a m elimi nates need for weights in m e a s u r e m e n t s up to 1 g r a m Handy new t e a r d r o p - s h a p e stainless steel pans Heavy glass t c p in tight-fitting dust-protective hinged lid IN
THE
COMPLETE
TROEMNER
LINE
t h e r e a r e quality b a l a n c e s a n d weights of every class, for every need. See y o u r l a b o r a t o r y supply dealer or d r o p u s £> c a r d r e q u e s t i n g Bulletin A.
HENRY TROEMNER, INC. 911
A r c h Street
Philadelphia 7, Pa. Circle No. 29 A-4 oil Readers' Service Card, page 77 A VOL
2 9 , N O . 4 , APRIL 1 9 5 7
·
29 A
