VOLUME
2 4, N O . 1, J A N U A R Y
1952
39 A
BARCLAY FLAME PHOTOMETER
INSTRUMENT
MERCURY
"^T Purified specifically f o r instrument use. •jt
Meets not only standard chemical, but also more exacting physical tests.
•JC Delivered in a handy bottle with dispensing
tip.
Ά" Controlled filling without exposure to contamination. ~Jr Stays bright a n d clean in long storage. •Jç Premium quality without premium price. Write
for current
quotations
Bethlehem Apparatus Company, Inc. 810 Front St., Hellertown, Pa.
Scute 7ImerJaéût,P&éâe^d/ TEST·STUDY·CONTROL
VISCOSITY As Simply, Quickly and Easily as Taking Temperature Readings J u s t a flick of a switch, t h e n r e a d t h e Brookfield dial, a n d you h a v e y o u r viscosity d e t e r m i n a t i o n i n centipoises. T h e whole operation, including cleaning u p , usually t a k e s less than a minute. Available in a v a r i e t y of models s u i t a b l e for ext r e m e l y a c c u r a t e work w i t h b o t h N e w t o n i a n a n d n o n - N e w t o n i a n materials, Brookfield Viscometers a r e p o r t a b l e a n d plug in a n y A . C . outlet — can be used in Lab, Plant or both. W r i t e t o d a y for fully illustrated catalog showing Brookfield Viscometers a d a p t a b l e t o a n y viscosity p r o b l e m from less than one to 32,000,000 centipoises. BROOKFIELD COUNTER-ROTATING MIXER — Two concentric, oppositely rotating shafts, propeller equipped and driven by two motors, produce an annular flow and up to 48,000 scissor-like cuts/minute. Enable exceptionally fast, effective and efficient laboratory mixing. Not a "stirrer." Write for Brookfield MIXER brochure.
Combines operating simplicity with variable sensitivity and a very high order of accuracy over a wide range of concentrations. Features include : Outstanding performance: requires only 10.0 ml sample, detects down to 0.1 p p m (2x10-3-Meq/L.) of potassium, even lower for sodium. Precision Design: eliminates build-up of salts and inside of burner surface; stainless steel atomizer needles provide uniform orifice for stable operation. Built-in air-pressure regulators with indicating gauges for positive and accurate control. Sloping Panel — easy to read: durable all-metal case with gray hammertone finish. 2 8 " χ 1 8 " χ 1 6 " high. Convenience of operation: all com ponents within easy reach. Atomizer accessible for m a n i p u l a t i o n a n d cleaning. Easily connected to air and gas services. Low maintenance: simple internal D C circuit — only external connec tion required is for galvanometer. Wide application: in the fields of— Agricultural chemistry Chemical industry and education Food technology & water treatment Clinical and medical routine testing and research.
Special precision potentiomerer
Tapered burn er oliminates huild-up of Salts and in side Surface.
For more information write for Bulletin 751. Distributed by
Brookfield
ENGINEERING lABORATORIES. INC. 272 Porter St.,Stoughton,Mass.
General Scientific Equipment Co. Hctmden 14
Connecticut
