TLC
SPECTROPHOTOMETRY CHROMATOGRAPHY ACCURATE NOW
MORE WITH THE
BACKGROUND DISCRIMINATING RATIO RECORDING
ΏΦΆ NEW Digitally Set
PHOTO-METRIC TITRATOR Automates
SCHOEFFEL
MODEL SD 3000
SPECTRO DENSITOMETER SCHOEFFEL INSTRUMENT CORPORATION, WESTWOOD, NEW JERSEY 07675, U.S.A. Circle No. 79 en Readers' Service Card See ACS Laboratory Guide for All Products/Sales Office
Routine Color/metric
Titration
Procedures
Convenient Set-up, Rapid Titration, and Excellent Repeatability are a few of the practical features of the PMTI Phototitrator; newest addition to Radio meter's line of Compatible Titration Equipment. It simplifies routine colorimetric titrations and saves operator's time by automatically compensating for sample haze; introducing the indicator; starting, controlling and stopping the titration at the desired end-point. The instrument is quicky programmed for a determination by setting the convenient digital switches, allowing "recipe-type" operation. Char acteristic repeatability is 0.1 to 0.2% in routine applications.
THE LONDON
Complete details on request.
811 Sharon Drive
COMPANY
Cleveland, Ohio 44145
R A D I O M E T E R C O P E N H A G E N Circle No. 172 on Readers' Service Carl See ACS Laboratory Guide for All Products/Sales Office
HAAKE
ROTO
portable mixers irom Eastern
ROTATING VISCOMETER For measurement of such properties as: Viscosity, Structural Viscosity, Dilatancy, Pseudo-Plasticity, Modulus of Elasticity, Relaxation Time, and Yield Value
•
Rugged'. Heavy-duty outboard bearing—quieter operation.
•
Flexible:
Standard NEMA Frame Motors . . . choice of direct drive or gear reduction.
•
Versatile:
Quick shaft
removal
and adjustable type swivel clamp. Send for Series 500 Bulletin.
EASTERN
INDUSTRIES
A Division of Laboratory For Electronics, Inc.
100 Skiff Street * Hamden. Connecticut 06514 Circle No. 115 on Readers' Service Card
SPECIFICATIONS Measuring Range:
Viscosity 1 to lOiOcP Shear Stress 5 to 107. Dyne/cm 2 Shear Rate .01 to 104 sec-i J Temperature Range —60° to +400°C
SPECIAL FEATURES 30 rotor speeds, three torque ranges selected electrically, pro vision for external recorder, extremely wide measuring range, provision for making measurements under pressure, or contin uous in-line. Call or write for detailed literature
^w
PolyScience Corporation
909 PITNER AVENUE
EVANSTON, ILLINOIS 60202
312 475 2909
Circle No. 176 on Readers' Service Card VOL 40, NO. 13, NOVEMBER 1968 · 141 A Circle No. 141 on Readers' Service Card »·
