h \ new. A LAB-SIZE DISPERS011IC Emulsifies, disperses, homogenizes 1 to 4 liter quantities.
New Products High-Speed Gel Permeation Chromatography
An auxiliary pumping system for use with the company's gel permeation chromatographs will significantly in crease the speed, total analytical ca pacity, and versatility of these systems. Flow rates of up to 15 ml/min at pres sures to 1000 psig are attainable. The system includes a stainless steel sol vent reservoir, degasser, hold tank, pressure gages, high-speed pump, addi tional injection valve and recycle model. It is priced at $3990. Waters Assoc, Inc., 61 Fountain St., Framingham, Mass. 01701 415
Produces pilot plant data that duplicates effects of production equipment. Now you can prepare, in the labora tory, the same excellent emulsions, dispersions, suspensions and superm i x t u r e s that are p r o d u c e d by Sonic's high-capacity production equipment. You'll find the Lab-Size Dispersonic extremely useful, if not indispensible, in research activities involving chemical, food, rubber, tex tile, cosmetic and pharmaceutical technology. A n d , because experi mental data can be directly applied to production processes, scale-up problems are a thing of the past.
The heart of our Lab-Size Disper sonic is the new Model " A " Sonolator. It's fully adjustable to permit best utilization of the jet-edge tone principle. Comes with acoustic in tensity meter and probe to assure maximum mixing effectiveness. All
stainless steel construction. Strips in minutes for cleaning and changing of internal parts. Complete, portable, self-contained system includes Sonolator and in strumentation, variable-speed motor, pump, tanks and controls mounted on a 2 χ 3 foot base. Place it on a handy bench, plug it in and you're in business. We'll be happy to send you more detailed operating information, com plete s p e c i f i c a t i o n s and p r i c e s . Please write us, or better yet, call. Sonic Engineering Corporation, C o n n e c t i c u t Ave., Norwalk, C o n n . 06854. (203)838-4717.
Sonic
Circle No. 161 onReaders' Service Card
138 A « ANALYTICAL CHEMISTRY, VOL. 43, NO. 2, FEBRUARY 1971
Air pollution monitor Model 130 fea tures a "sheath air flow," which en closes the air sample to be analyzed in a sheath of clean air. Thus the instru ment can be operated for longer time periods without losing sensitivity be cause of air build-up in the optical sensing zone. A unique calibration sys tem includes calibration of both optics and electronics. Flow rate is up to 1 cfm; count rate up to 107 particles per ft3; and sensitivity from 0.5 to 40 microns. The instrument samples auto matically in one-minute cycles at in tervals of 2, 10, or 60 min. $6500. Coulter Electronics Industrial Div., 590 W. 20th St., Hialeah, Fla. 33010 416
Refrigerated and Heated Console Bath
The Model 2900 floor control bath provides control accuracy to ±0.02°C. Temperature is directly dialed from a control panel. Bath liquid capacity is 18 gallons: refrigeration capacity is 5000 Btu's per hr at 10°C. The unit offers a panoramic work area 26V2 X 9% X 11 in. deep. For external cool ing the unit allows return circulation to the bath in an open system from an external tank without an additional pump. $1650. Forma Scientific, Inc., Box 649, Marietta, Ohio 45750. 614373-4763 417
