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.
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LOAD-LIGHT-LOOK! You test fast w i t h this lowest-cost A b b e ! B&L Abbe-3L Refractometer tests purity and concentration with top accuracy. Reads refractive index to .0005; estimates to .0001. Reads dis solved solids to .2%; estimates to . 1 % . Fastest, Upfront wipes in complete
easiest operation ever. horizontal prism loads or a wink. Y o u can actually several tests a minute!
Lowest-cost A b b e . Y o u pay only $745 for Abbe-3L . . . less t h a n 29£ per w o r k i n g day for the first ten years of its long trouble-free life.
BAUSCH & LOMB OPTICAL C O . 6 0 9 4 3 St. Paul St., Rochester 2 , Ν . Υ.
Π Send me Abbe-31. Catalog D-280. Π I'd like a demonstration.
Here are a few of the many areas where B&L Abbe-31. Refractomeiers are standard test equipment: Education Research Development
Organic Chemicals Solvents Glass Oil Contamination Hydraulic Fluids Petroleum Derivatives Plasticizers Chlorinated Solvents Silicones Nylon Cocoa and Chocolate Salt Solutions Polymers Proteins Waxes Essential Oils Peroxide Solutions Coffee Solids Polyester Resins Paint Solvents Pharmaceuticals Biologicals Flours
NAME
BAUSCH & LOMB
TITLE COMPANY
SINCE
1853
with
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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, 1007 Hanson Street, East Stroudsburg, Pennsylvania. i«a
ADDRESS Salute te
Will'8 first 40 years
88 A
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ANALYTICAL CHEMISTRY
Patterson-Kelley All P-K Twin-Shell Blenders are patented and the name registered Circle No. 68 on Rtaoeis semce Cart
