ACE AUTOMATIC PIPETTER • Fills and Pours Automatically, Rapidly.
Speed
FJ tration
• Interchangeable: One Head For All Capacities, All Volumes. • Short Tipping Angle.
Cat. No. 8004. Interchangeable volumetric bulbs give reproducible volumes within ± 1 % for capacities greater than 5 ml. Smaller capacities to within ± 0 . 1 ml. reproducible. Please specify volume of bulb and flask capacity when ordering. Specifications and prices: Erlenmeyer Flask I 29/42, 500 m l . : $2.50 each, 1000 ml.: $2.80 each. Flask Head % 29/42: $11.80 each. Interchangeable Volumetric Heads I 14/20, 1, 3, 5 ml.; $3.75 each; 10, 15 ml.: $3.85 each; 20, 25 m l . : $3.95 each.
Ace Interchangeable Tissue Grinder Cat. No. 8345. A precision ground instrument for macerating tissue. Rod and barrel are interchangeable. Rod is ground its entire length and can be reversed for double life. Rod fits Ace Cat. N o . 1200 B Flex-grip Chuck, forming a flexible coupling to the motor drive when mechanical operation is desired. Price complete Barrel $3.75.
$6.75,
Rod $3.00,
S P E C I F I C A T I O N S : Ground section of barrel 82 m m . Overall length of barrel 125 mm., length of ground rod 240 m m . Barrel clearance of .005 to .008" meets G.S.A. specs.
A Coors Shapiro Speedi Filter disc greatly increases the efficiency of Buchner funnels through the utilization of a major portion of the filter paper surface. In some filtering operations, filtration is limited to those areas of the filter paper which lie directly over the holes in the Buchner funnel plate. With the Coors Shapiro Speedi Filter disc interposed between the plate and the filter paper, you utilize completely the entire area of the filter paper. The speed of filtration is greatly increased as is the quantity of suspension which can be filtered by a single sheet of paper. What's more, t h e t o t a l surface is uniformly coated. Coors filter discs are immediately available through your laboratory supply dealer, in four standard sizes or in an assortment of the four sizes. INSIST THAT YOUR LABORATORY PORCELAIN WARE CARRY T H I S MARK OF DEPENDABILITY
ACE GLASS
INCORPORATED
Louisville, Ky.,
V i n e l a P l d
N .
J .
Springfield, Mass.
COORS U.S.A. COORS PORCELAIN COMPANY, G O L D E N , COLORADO
Circle No. 19 on Readers' Service Card 76 A
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ANALYTICAL CHEMISTRY
Circle No. 43 on Readers' Service Card
