Serving as an extremely accurate pipette, this single-

channel pump delivers from 0.01 to 1.0 ml. of material each time

the foot switch is actuated. Delivery rate is set on a ten-

turn dial calibrated in 0.001 ml. increments. Accuracy is ± 2 % .

versatility!

NEW PRODUCTS

INFUSION PUMP Model 975 accepts glass or

plastic syringes from ^ 100 to 5 ml. which are

held in snap-on holders. 30-speed gearbox permits

selection of synchronous speeds over a 17,000-1 range.

Rates are 0.00046-154.8 ml./min.; weight is 12 lbs.

ASK FOR YOUR FREE COPIES OF BULLETINS 1500 and 975

DEPARTMENT

INSTITUTION

Chromalog 2 is an automatic digital electronic integrator for rapid and precise chromatographic analysis. Easily connected directly to the chro­matographic outlet, the instrument integrates peaks of all shapes and sizes from packed and capillary col­umns, operating isothermally and with temperature programming. Chromalog 2 features a built-in printer and combines analog and digital techniques along with solid state integrated circuits. High effec­tive count rate permits up to 40,000 counts per second at ful l scale, print­ing as many as three peaks per sec­ond without loss of counts during printing. Chemicon Co., 839 Beacon St., Boston, Mass. 02215 412

Laser Raman Spect rometer

JKS-OIA, a Raman spectrometer with a laser as its light source, is de­signed for precise measurements of small amounts of sample. By means of an Ar ion laser, it is possible to mea­sure Raman effect with a wavelength of 4880 A or 5145 A. The spectrometer is a double monochromator with a Czerny-Turner mount which removes stray light. The JRS-OIA can be used for both automatic recording and pho­tographic detection. Japan Electron Optics Laboratory Co., Ltd., New Tokyo Bldg., 3-2" Marunouchi, Chi-yoda-ku, Tokyo. 413

Gas Chromatographs

The 7300/7400 Series systems per­mit highly sensitive analysis at pico-gram levels or preparative separation of milligram and larger quantities. A new oven design features low mass con­struction, forced-air cooling, and an automatic door for rapid, precise oven temperature control. Completely in­terchangeable inlet systems, columns, and detector assemblies are located at the front of the oven. Snap-on mount­ings for these assemblies permit con­venient removal. Packard Instrument Co., Inc., 2200 Warrenville Bd., Down­ers Grove, 111. 60515 414

Circle No. 181

MONOCHROMATOR, m in ia tu re quartz pr ism type, F/7.6 Range 190-1500 m u . Slits are adjustable in unison.

Circle No. 182

PHOTOMULTIPLIER housings and tubes. Thermo-cooled and s tandard types for al l side and end-on photomul t ip l ie rs .

Circle No. 183

PHOTOMETER for photomul t ip l ie r opera­t ion w i th adjustable h igh voltage and sensi t iv i t ies to the nano amp range.

Circle No. 184

LAMP SYSTEMS w i th quar tz opt ics, for Xe and XeHg lamps f r om 75 to 6500 Watts; also stable power suppl ies.

Circle No. 185

ACCESSORIES as l iquid f i l te rs , condens­ing systems and socket rnounts for Hanovia, Osram, GE and other lamps.

Wri te for Brochure

Circle No. 17G on Readers' Service Card

1 0 6 A · ANALYTICAL CHEMISTRY See ACS Laboratory Guide for All Products/Sales Office

DISPENSING PUMP

COMPACT

NAME

CITY

STATE Z I P

HARVARD APPARATUS CO., I N C . Dept. L-54, Post Office Box 24 Millis, Massachusetts 02054

Send free Bulletins 1500 & 975

S C Η Ο Ε F F Ε L I N S T R U M E N T - C O R P .

Westwood, N. J. 07675 (201) 664-7263