NOW- Fast Trace Metals Analysis with the
AMAZING
TORQUE
NEW TECHTRON AA-3
.Λ·***
ATOMIC ABSORPTION SPECTROPHOTOMETER
-LINE TRANSI-STIRRERS Special solid state transistorized controls as sure uniform set speed regardless of the load or changing load, developing full motor torque at all speeds. They provide unusually high torque at even the lowest speeds.
Rapid, highly-accurate metals analysis of many heretofore difficult-to-analyze indus trial, agricultural and biological materials is now possible. The atomic absorption technique, with the new Model AA-3, offers many advantages over competitive methods — relative freedom from interelemental matrix interferences, accurate anal ysis of trace quantities in the presence of large amounts of others, simplicity of operation, and speed in obtaining results are a few such advantages. The AA-3 offers many special features of its own. Among them are a novel "warm-up" bench for up to six source lamps, new slit mechanism for high reproducibility*, designed-in flexibility in the sampling area anticipating future developments, compactness, manual or motordriven wavelength scan, and the capability to do flame emission analysis. An added bonus is low initial, operating, and maintenance costs! -patent applied for
FOR A BRIGHT NEW LINE in sources, we offer a complete stock of Osram and the famous "Ransley" Hollow Cathode Lamps, providing operating reli ability, increased spectral intensity, and long life.
These stirrers are ideal for the most viscous syrups, pastes, paints and petroleum products. Each is a single extremely compact unit—no separate control boxes, rheostats or delicate vacuum tubes. All operate on 115 Volts AC-DC and have three-wire cords and plugs. Finished in pale green epoxy enamel which resists acid and solvents. #126 STIRRER
1/50 H.P. enclosed motor lessens possibility of damage from corrosive fumes. Three shafts: direct drive, 6:1 and 36:1 reduction. Delivers 9.0 in./lbs. at 20-175 RPM—1.5 in./lbs. at 120-1000 RPM and 0.25 in./lbs. at 800-6000 RPM. Sturdy cast aluminum control housing clamps to laboratory stand—stirs at any angle. Precision Jacobs chuck takes rods to 5/16". $165.00
Powerful and extremely versatile for heavy viscous pastes, glues, oils as well as high speed stirring of emulsions and suspensions. Continuous duty 1/18 H.P. enclosed-fan motor—delivers 0.5 in./lbs. at 500 to 7500 RPM. Second shaft with 10:1 gear reduction provides 4.7 in./lbs. at 50 to 750 RPM. Precision Jacobs chuck takes rods to 5/16". $150.00
#124 STIRRER
SAGE Syringe Pump — Model 234-1 For Flame Photometry and AA Spectroscopy
# 1 2 3 STIRRER
A simple-to-operate instrument offering accu rate control of sample flow rates. Minimizes effect of viscosity variations, temperature changes, and surface tension factors. Flow rates from .341 ml to 16.8 ml per min. possible. Further data on request.
For emulsions, suspensions, etc. requiring high speed and torque. Continuous duty, 1/12 H.P. motor delivers 0.5 in./lbs. at 500-12,000 RPM. Collet type precision chuck takes 5 / 1 6 " rods. $140.00 FREE
New ca,alo
§ on request.
201-262-5445
AZTEC
INSTRUMENTS. INC.
2 Silverbrook Road, Westport, Connecticut Telephone: ( 2 0 3 ) Circle No. 140 on Readers' Service Card 50 A
·
ANALYTICAL CHEMISTRY
227-1722
TALBOYS
INSTRUMENT CORP. 13 Ackerman Ave. · Emerson, N.J. Circle No. 99 on Readers' Service Card
