CARBONandSULFUR DETERMINATIONS
to less than O.O1% • • • • •
DIRECT READING FAST ACCURATE AUTOMATIC WIDE RANGE
The direct reading range of the LECO WR-12 Wide Range Carbon Determinator is 3.5% to less than 0.01%. Accuracy is ± .002% C or ± 1% C present, whichever is greater. The WR-12 is completely automatic and an electronic weight compensator permits results to be read directly from an all-electronic digital display. Other LECO Carbon Determinators include the moderatelypriced 70-Second Model and the Low-Carbon Model for carbon determinations of less than 0.0005%.
New Whatman
Precision Chromatography Columns. ...exact, reproducible results ... zero dead space ... even sample application ...narrow bands ... resistance to chemical attack .. .optional, removable water jackets Made by the world's leading manufacturer of chromatographic media, the new Whatman Precision Chromatography Columns give consistent, accurate performance in high resolution chromatography.
At the 1650° C temperatures possible in the Induction F u r n a c e of t h e LECO A u t o m a t i c Sulfur Determinator, sulfur recovery is consistent. A short, clean delivery system prevents loss of combustion products. The Automatic Titrator combines the accuracy of a photocell end-point with the sensitivity of an automatic solenoid. Complete determination of a wide variety of materials having sulfur contents ranging from less than 0.001% to 50% takes only 3 to 6 minutes.
Made of borosilicate glass, P.T.F.E., and polyethylene... the columns have special end assemblies that enable them to be used for ascending or descending chromatography...input and delivery tubes designed to reduce dead space, prevent contamination, and give convenient sample injection. For further information, send for our free Precision Chromatography Columns brochure.
LABORATORY EQUIPMENT CORPORATION
reeve angel 9 Bridewell Place, Clifton, N.J. 07014 H. Reeve Angel & Co., Inc. Sole Distributor in North America
1415 HILLTOP ROAD · SI. JOSEPH, MICHIGAN 49085
Whatman is the registered trademark of W&R Balston, Maidstone, England.
Circle No. 86 on Readers' Service Card 120 A
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ANALYTICAL CHEMISTRY, VOL. 4 2 , NO. 13, NOVEMBER
Circle No. 121 on Readers' Service Card
1970
