The shell of the P-K Type (LV) Lab Blender can be charged from either side by the quick removal of either of two dust- and watertight covers.
Product Capsules bile. No special building facilities re quired. Texas Nuclear Corp., P. 0. Box 9267, Austin 17, Texas 77A-1 Hot Plates. Circle 80A-2 for bulletin on several types and sizes of laboratory hot plates. Working temperatures range from 175° F. to 950° F. Lindberg Engineering Co., 2455 W. Hub bard St., Chicago 12, 111. 80A-2 Hot Plate-Stirrer. "Stir-Plate" com bines a variable magnetic stirrer and a closely controlled hot plate enabling liquids to be heated and stirred simul taneously or independently. Catalog available. Thermo Electric Manufac turing Co., 478 Huff St., Dubuque, Iowa 54A-2
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P-K's NEW (LV) LAB BLENDER YOU GET THESE 3 DIFFERENT MIXING ACTIONS... LIQUID-SOLIDS TYPE - To disperse and blend, uniformly, liquids of any viscosity with dry solids, just insert the wire cage liquidfeed bar assembly. Handles liquids from mi nute quantities up to 40% of total weight. Liquid is introduced through hollow shaft of bar. Even critical formulations blended in 5 to 10 minutes.
INTENSIFIER TYPE — To get intensive mix ing of hard-to-blend dry solids, or to break up agglomerates, use wire cage bar assembly. Average blending time for dry formulations: 3 to 5 minutes. FOR GENTLE PRECISION BLENDING - Simply remove wire cage bar. Unique blend ing action will not cause attrition or break down even the most delicate crystals. Average blending time: 3 to 5 minutes.
This new P-K Type (LV) Lab Blender owes its versatility to the design of the removable, spring-loaded liquid-feed bar assembly. Liquids and solids are prevented from entering the bearing housings by an exclusive, patented seal. Standard (LV) Lab Blenders are available in 8 and 16 quart capacities, in transparent Lucite or stainless steel. Interior of shell and stain less steel bar assembly can be cleaned, clin ically, in minutes. Operates on 115 ν AC. Units can be shipped from stock. For complete technical information and prices, write to PK's Chemical and Process Equip ment Division, 1001 Hanson Street, East Stroudsburg, Pennsylvania. IOQ
Patterson-Kelley All P-K Twin-Shell Blenders are patented and the name registered Circle No. 96 on Readers' Service Card, page 89 A 96 A
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ANALYTICAL
CHEMISTRY
Instruments. Circle indicated num bers for complete information on the following: line-operated pH meter model 110, 38A-1; line-operated pH meter model 115, 38A-2; battery-op erated pH meter, 38A-3; reflection meter, 38A-4; electronic densitometer, 38A-5; multiplier fluorescence meter, 38A-6; colorimeter model 402-E, 38A7; colorimeter model 450, 38A-8; and colorimeter model 401, 38A-9. Photovolt Corp., 95 Madison Ave., Ν. Υ. 16, Ν. Υ. 38Α-1 to 9 Lathes. Catalog available on lablathe for glassworking. ' Complete with motor, chuck and variable speed drive. Bethlehem Apparatus Co., Inc., Hellertown, Pa. 45A-1 Mixers. Circle 110A-1 for new de scriptive bulletin on the complete line of precision "Lightnin" mixers and ac cessories. Mixing Equipment Co., Inc., 160-n Mt. Read Blvd., Rochester 3, NY. 110A-1 Mortars & Pestles. "Norbide" boron carbide mortars and pestles are avail able in several types and sizes. They possess extreme hardness, and com pressive strength of 414,000 psi. Nor ton Co., 69 New Bond St., Worcester 6, Mass. 18A Oxygen
Bomb
Sulfur
Apparatus.
Apparatus consists of self-sealing oxy gen bomb with all accessories and in structions for the rapid combustion of analytical samples when calorific meas urements arc not required. Parr In strument Co., Moline, 111. 100A-2 pH Meters. Information available on pocket size pH meter with analytical pH probe unit. Completely self-con tained in water-proof ever-ready case with shoulder strap. Analytical Meas urements, Inc., 585 Main St., Chatham, Ν J. 84A
pH Meters. Descriptive literature available on the "Radiometer" pH meter. Model is A-C line operated and designed for general laboratory use inclusive of electrometric titrations. Welwyn International Inc., 3355 Edgecliff Terrace, Cleveland 11, Ohio 114A Photofluorometers. New bulletin available on direct-reading electronic photofluorometer with a sensitivity range capable of encompassing trace quantities and concentrates of fluoresc ing constituents. Coleman Instru ments, Inc., Dept. A, Maywood, 111. 29A
Photography Equipment. Circle 83A-1 for special brochure providing complete data and prices on instrument for photographing automatically, under a microscope, any material that has a time change in structure. Aloe Scien tific, Div. of A. S. Aloe Co., 5655 Kings bury, St. Louis 12, Mo. 83A-1 Photometers. Complete technical in formation available on the new Uni versal photometer for low level light measurements. Eldorado Electronics, 2821 10th St., Berkeley 10, Calif. lOOA-1
Pipets. Bulletin available on the Thomas-Seligson automatic pipet that eliminates individual sampling pipets and repeated filling of dilution pipets. Arthur H. Thomas Co., Vine St. at 3rd, Phila. 5, Pa. 98A Polarographs. Detailed information available on the cathode ray "Polarotrace" for direct or derivative opera tion. Standard Scientific Supply Corp., 808 Broadway, N. Y. 3, Ν. Υ. 89Α Presses. Bulletin available on press used for making KBr pellets for infra red spectroscopic analysis. 20-ton ca pacity. Bench mounted, hand oper ated. Loomis Engineering & Manufac turing Co., Route 46, Caldwell, N. J. 30A
Presses. Literature available on Carver laboratory presses. Standard 10-ton unit is used for forming KBr pellets, dehydrating, pressing out oils, filtering thick fluids, determining fatty acids, etc. Fred S. Carver Inc., 54 River Rd., Summit, N. J. 52A Printing Integrator. New printing integrator model 194 presents 6000count/minute integrals on adding ma chine tape, ready for interpretation. Circle 99A for copy of "Automatic Printed Integration of Recorder Data." Instrument Div., Perkin-Elmer Corp., 750 Main Ave., Norwalk, Conn. 99A (Continued on page 98 A)
