At the Pittsburgh Conference — Hear "The Development of an Atomic Absorption Flame Photometer
for
Routine
Measurements"
Dr. J. A. Mitchell, Ph.D., MIEE, F. Inst. P.
See the EEL 140 in the Fisher Scientific Co. exhibit — Booths 16 to 19
Atomic Absorption Spectrophotometer
Lamp Conditioner The EEL Lamp Conditioner preheats up to four lamps simultaneously, eliminating o p e r a t i o n a l
delays
and provides a
convenient means o f running lamps to preserve their emission during long periods o f disuse.
The correct o p e r a t i n g cur-
rent f o r each lamp m a y be selected independently. Contact your nearest FISHER SCIENTIFIC or V A N WATERS a ROGERS sales office
INTERNATIONAL SALES ASSOCIATES 115 East M a p l e A v e . , Langhorne, Pa.
(215) SK7-9874
See Buyers' Guide for all products/sales offices. Circle No. 257 on Readers' Service Card
HARSHAW
IR Pressed Pellet Powders
KBr, Csl, and TIBr, IR Pressed Pellet Powders are suitable over a wide spectral and refractive index range.
The Harshaw Chemical Co. 194S East 97th St. · Cleveland. Ohio 44106 · Phone 216 721-8300 Utrecht. Netherlands —Harshaw-Van Der Hoorn N.V. Frankfurt. W. Germany— Harshaw Chemie GmbH
tote*... VITREOSIL PURE FUSED QUARTZ
CONICAL PIPE JOINTS Designed as a practical demountable joint for vacuum or pressure, liquid or gaseous systems. The conical (or Buttress) joint is available in clear pure fused quartz in sizes to 2 " I.D. and in opaque fused silica in sizes 3" I.D. to 6" I.D. Clear fused quartz joints have grooves into which gasket material is forced for tighter joints. Opaque fused silica joints have precisely ground flat ungrooved surfaces. Gasketing material may be selected to meet requirements. Conical pipe joints are ideal for joining fused quartz or fused quartz to metal, ceramics, plastics, etc. Interchangeable with borosilicate pipe joints. Joint hardware can be supplied at additional cost. Special auxiliary apparatus with furnace annealed pipe joints includes thermocouple wells, end caps, closed and/or reduced end furnace tubes in various sizes, one, two and three neck round bottom flasks up to 2 liters capacity in clear pure fused quartz and up to 15 liters in opaque fused silica. 38
Circle No. 254 on Readers' Service Card
THERMAL A M E R I C A N
VITREOSIL
FUSED QUARTZ CO. RT. 202 S CHANGE BRIDGE RO. MONTVILLE, NEW JERSEY ZIP CODE 07045
Circle No. 35 on Readers' Service Card
220 A
·
ANALYTICAL CHEMISTRY
