7i<mao. OUTSTANDING LABORATORY SPECIALTIES

Thomas Spectrophotometer Accessories in combination with Turner Model 330, for completely automatic sampling, readout and printout of absorbance, transmittance or concentration values.

Thomas Oxy-Combustor, temperature controlled; for closed tube micro oxygen combustions; superior for fluorine.

Thomas-Hoover Melting Point Apparatus with Programmer for automatic control of temperature rise.

Thomas Tissue Homogenizers, with Teflon pestles.

Thomas fast response, low resistance pH Electrodes; offered in 33 types and sizes.

Thomas-Quam Safety Shields, with inner pane of 300X impact resistant polycarbonate and weighted bases.

Van Slyke Magne-Matic® Manometric Blood Gas Apparatus; with magnetic agitation of chamber contents; reduces breakage.

Thomas Magne-Flash Evaporator, with magnetic stir-spray action. Eliminates rotating seals.

Thomas-Ogg Combustion Flask in cabinet with Infrared Lighter for remote firing of samples in Schoniger procedure

Thomas-Kofler Micro Hot Stage, New Model, with interchangeable pre-calibrated thermometers.

7famau. ARTHUR H. THOMAS COMPANY

80 A

Scientific Apparatus and Reagents VINE STREET AT 3RD · P.O. BOX 7 7 9 • PHILADELPHIA, PA. 19105, U.S.A.

Circle No. 65 on Readers' Service Card

ANALYTICAL CHEMISTRY