Exact Scale-Up From Lab Tests in p-k Twin Shell Blenders
MAGNETIC SPATULA*
with adjustable magnetic f o r c e ! Speed up weighing of steel samples! The Leco spatula enables you to se lect, pick up and drop those last tiny particles, to arrive at accurate weights on the balance pan. A small dial on t h e handle allows c o n t r o l of t h e magnetic force of the blade . . . rolls through 180° to deliver force in all stages from zero to full s t r e n g t h . I n c o r p o r a t e s a p e r m a n e n t Alnico magnet. Nothing to wear o u t . . . no wires, battery or vibrator. *patent applied for To order, specify leco No. 512. Per unit price, $3.25. Compfefe literature available on request. LABORATORY EQUIPMENT CORP. St. J o s e p h 8, M i c h i g a n
Sampling problems ? Here's your solution—a new gun to sample molten ferrous or non-ferrous metals for chemical analysis.
Polarographic Specialties. Four-page bulletin discusses use of quaternary ammonium compounds for polarography and presents bibliography of polaro graphic applications of quaternaries. Includes other polarographic specialties. Southwestern Analytical Chemicals. 23 Clamps. Bulletin of eight pages de scribes company's line of aluminum alloy clamps \vith tensile strength of 45,000 p.s.i. and melting point of 1100° F. Labline, Inc. (Bull. W.'fi). 2 4 Boats,
Crucibles,
and
Funnels.
Six-page folder illustrates stock sizes and combinations of graphite boats, cru cibles, and funnels, and includes ex amples of custom prepared graphite parts. United Carbon Products Co., Inc. (Cat. Sect. 456). 25 Temperature Test Chamber. Six-page bulletin describes operating principle and procedure of temperature test cham ber, and presents specifications and maintenance information in addition to illustrations and diagrams of the new unit. Statham Development Corp. (Model TC-2A). 26 Lithium Dispersions. Instruction sheets describe methods for laboratory preparation of lithium metal disper sions in mineral oil, petrolatum, and wax. Lithium Corp. of America, Inc. 27
S A M P L I N G
G U N
In just a fraction of a second, this new gun by Laboratory Equipment draws a sam ple of the metal you wish to test up into the Pyrex tube, giving you a perfectly clean, uniform, oxidation-free sample. S a v e s T i m e : The Leco Sampling Gun elim inates the need for pouring a sample, or for drill ing or milling it and then washing the chips. It's a fast, simple, sure operation . . . and it gives you the purest possible sample for ο positive analysis. S a v e s M o n e y : When you use α Leco gun, you eliminate the cost of a drill press, milling ma chine or other expensive testing apparatus.
E l i m i n a t e s H a z a r d : The Leco Sampling Gun eliminates the danger of burns or injury from splashing molten metal when obtaining the sample.
Write for FREE LITERATURE I Just off the press — Leco's new scienti fic equipment catalog, containing many types of laboratory apparatus to simpli fy your testing and analysis Operations. LABORATORY EQUIPMENT CORP. St. J o s e p h 8 , M i c h i g a n Circle Nos. 63 A-1, 63 A-2 on Readers' Service Card, page S3 A
VOLUME
2 8 , N O . 8, A U G U S T
Twin Shell Lab Blenders enable you to carry through hundreds of different blends in the certain knowledge that your laboratory results will be duplicated exactly on the job— and in every batch thereafter. Lab models come with Lucite or stainless steel shells in sizes from one pint to 8 quarts. A special yoke attachment, not shown here, holds shells down to 1 pint in size, allows you to run two tests at once.
Twin Shell Production Blenders retain the same exclusive design. Blending of materials is amazingly fast and thorough regardless of varying particle size, shape or density. Yet action is so gentle that delicate crystals in your material will not break down. Charging, discharging and cleaning are particularly easy. There are no internal baffles or obstructions. With these and other advantages, hundreds of users have found that twin-shell units cut normal blending time up to 90%.
Distillation Apparatus. Eight-page bulletin describes uses and features of apparatus for automatic distillation of products having boiling range between 90° and 700° F. Precision Scientific Co. (Bull. 780). 28 Turbidimeter. Four-page bulletin de scribes recording turbidimeter for con tinuous measurement and recording of suspended matter in liquids. General Electric Co. (GEC 1203A). 29 Plastics. Forty-eight page booklet tells story of manufacture of plastics and plastic products. Union Carbide & Carbon Corp., Bakélite Co. 30
Production Models range up to 500 cu. ft. capacity and blend tons of material in each batch. Each retains the same unique 5-way tumbling, rolling and folding action that gives continuous mixing on less power and fewer, slower rotations. And jt-lc * s special high speed intensifier bar (shown in girl's hand, top photo) is available in most sizes to break up lumps and agglomerates and disperse liquids into dry materials. But this is only part of the story. Let us send you full details—or run some tests, free of charge, blending your materials in a twinshell blender. Write The Patterson-Kelley Co., Inc., 2380 Lackawanna Avenue, East Stroudsburg. Pa.
Radioactive Chemicals. Thirty-two page catalog lists services, chemicals, and radioactive sources available from
PATTERSON-KELLEY
For further information, see coupon on page S3 A
Offices: New York, Chicago, Philadelphia, Boston and other principal cities Circle No. 63 A-3 on Readers' Service Card, page 53 A
1956
63 A
