SCIENTIFIC GLASS APPARATUS CO., INC

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NEW "TOOLS" TO AID YOU IN YOUR W O R K . . . MAGNETIC STIRRING HOT PLATE

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or those applications requiring simultaneous heating a n d stirring, the "Thermo-Stii " fills the bill. Vessels can be used t h a t are small neck, ciosed, or under vacuum. I m p o r t a n t features include: stepless heat control. . . stepless stirring speed control. . . 750 w a t t nichrome heating element. . . separate on-and-off switches for stirrer and hot plate. Magnet retains flux under extreme heat. Plate heats up to 700° F . with thermostat control. Durable steel case is finished in H a m m e r t o n e . No. H-3350X "Thermo-Stir" complete with l-'/s" Teflon stirring bar, removable mounting rod, 6-foot heavy-duty cord with plug for 115 volts A C. Overall dimensions: 6-6/8" square χ 5-3/4" high. Weight 7 pounds. Price $84.50

Stainless Steel TENSION HOOKS

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se these sturdy Tension Hooks on standard taper ground glass joints and stoppers in place of glass hooks. T h e y hold two joints together securely. . . eliminate glass repair bills caused by broken glass hooks. E a s y t o install, easy to remove. Each set consists of two stainless steel bands (one with hooks, t h e other with springs) and two tabs of proper size for fastening the bands together. No. G-9795X Tension Hooks complete, as described (please specify size) : Size 10/30 12/30 14/35 19/38 24/40 29/42 34/45 40/50 45/50 Per Set....$ .80 $ .80 $ .80 $ .85 $ .85 $ .90 $ .90 $1.00 $1.00 Note: Twelve sets (one size only) subject to 10% discount.

SeKo PORTABLE POCKET BALANCE

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his balance is ideally suited for field work, advanced chemistry students, and apothecaries. E a c h p a n has a capacity of 100 grams. Sensitivity with full load is 1 milligram. Beam is graduated 0 to 100 mgs. b y 1 mg. increments. Stainless steel pans are 2-V2" diameter. Knives are hardened steel. . . bearings solid agate. Case measure 8" X 3 " X 6" high. Upper p a r t is aluminum with Lucite panels. Balance remains completely assembled ready for instant use even in transit. Carrying handle is genuine leather. No. B-2350X Pocket Balance complete with set of weights (100 mgs. to 50 grams) and forceps. Each $39.50

SCIENTIFIC GLASS APPARATUSCO.,INC.

BLOOMFIELD - NEWJERSEY LABORATORYAPPARATUS - INSTRUMENTS - CHEMICALS - GLASSWARE For further information, circle number 9A-1, 9 A-2, 9A-3 on Readers' Service Card, page 53 A

VOLUME

2 7 , N O . 9, S E P T E M B E R

1955

9A