NEW PRODUCTS
NEW!
LOW COST LABORATORY OVEN
00
$55
For drying, baking, annealing, conditioning, sterilizing, evaporating and heat treating.
MODEL LO*200C • • • • • •
Welded steel construction. Thermostat control — U. L. APPROVED. Damper controlled induced air circulation. Cool handle — explosionproof door latch. Nîckle plated shelves and interior hardware. Gray-green Hammerloid baked enamel exterior.
Operating range to 200° C. Thermostat response sensitivity ± 1 ° C. An efficient system of air intake and exhaust vents provide exceptionally fast drying. Ready for plug in. Thermometer and two removable shelves included. 110 and 220 voit units available. 88 Standard models — larger bench, cabinet a n d walk-in ovens. Write for bulletins with prices.
G R I E V E - H E N D R Y CO. 1346 N . Elston A v e . , Chicago 2 2 , III. Circle No. 65 on Readers' Service Card
PICK ONE (OR MORE)
. . . WE NOW HAVE SIX SIZES The Duall Tissue Grinders have proved so popular that we're forced (quite willingly) to offer two new small sizes. One has an operating capacity of 1 ml.; the other 3 ml. These, with the four larger sizes already offered, provide capacities up to 50 ml. Why is the Duall so popular? The homogenizer's unique design allows two-stage grinding on its conical and cylindrical surfaces. Particle size reduction starts in the conical section. Final homogenization occurs when material is forced past the cylindrical surfaces. Here uniform particle size is attained.
Gas Cylinder Bracket Cast iron bracket for holding gas cylinders rigidly in place at the edge of a laboratory bench or table is clamped onto the edge of the table by means of two thumb screws. Cylinder is placed vertically into the bracket and is held by an adjustable heavy webbed strap. Weight of the unit is 21/2 pounds. Price is $5.50. Central Scientific Co. P-10
Bulletin 460A gives full information on the entire Duall line (both Teflon and glass pestles are offered). Write for your free copy. Catalog No. K-88545 Duall Tissue Grinder—All Glass Capacity ml.
AA A
1 3
COMPLETE
9.05 9.05
KONTES GLASS COMPANY
Fraction First Choice For Quality Technical Glassware V i n e l a n d , New Jersey Midwest Distributor: Research Apparatus, Inc., Wauconda, III.
Circle No. 104 on Readers' Service Carl 132 A
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Portable-Apparatus Tables Two models, 37 by 24 in. and 49 by 24 in., will support apparatus up to 200 lbs. Available in several choices of cupboard and drawer combinations. They have colorlith tops and are equipped with 3y 2 -in. ball bearing, rubber-tired, steel disk wheels. Electrical panels can be mounted in the cupboards as needed, according to the company. Duralab Equipment Corp. P-8 Variable Volume Pumps The SV Series retains the basic principle of hydraulic actuation of a Teflon diaphragm used in previous models, but units are of smaller size. The SV-4 has a capacity of 80 ml./min. at 100 p.s.i. and is variable to zero output during operation, through a vernier control knob. SV-1, also adjustable, has capacity of 16 ml./min. Benson Laboratories, Inc. P-9
DUALL TISSUE GRINDERS
Size
High temperature vacuum oven, called the Super-Temp Duo-Vac, has a temperature up to 500° F. in a vacuum chamber measuring 11 in. in diameter by 12 in. deep. Heating time to maximum is one hour, and temperature constancy at all settings is ± 1 ° F. Price: $395. Labline, Inc. P-7
ANALYTICAL CHEMISTRY
Collectors
New line of 12 models has units available for time collection and for volumetric-siphon collection, or they can be obtained with the Tri-Purpose
