THOMAS MAGNETIC STIRRERS For variable speed stirring action within either closed or open vessels •
Swivel joint assemblies
clamp
provides
convenience
in
mounting
|v With stirring bars sealed in Pyrex brand glass, Kel-F, or Teflon 9235-C.
MAGNETIC STIRRING A P P A R A T U S , Thomas. A compact, quietrunning apparatus which utilizes a rotating field of magnetic force to induce variable speed stirring action within either dosed or open vessels. Now offered in two executions, i.e. with either enclosed rheostat, which will facilitate manipulation in some assemblies; or with separate rheostat for control of speed at a distance of approximately 30 inches from stirrer. Stirring is accomplished by means of a small magnetized bar, sealed in heavy wall Pyrex brand glass, Kel-F or Teflon plastic, which is placed in the liquid to be stirred and which is rotated b y magnetic force applied beneath the container. This force consists of a permanent bar magnet attached to the shaft of an electric motor and mounted in an aluminum housing with flat top 43A inches diameter and 4'/2 inches high, on cast metal base. Can be used either on the table or on a support rod, attached by means of a clamp with swivel joints. Suitable for any stirring operation which involves 1 ml to 1 liter of liquids with viscosities up to that of a 5 0 % glycerol solution. Particularly convenient for use in closed systems. Any type of vessel of glass, porcelain or non magnetic metal can be used. MAGNETIZED STIRRING BARS 9 2 3 5 - T 5 . Stirring Bars, Magnetized, Glass Coated. Consisting of a cylindrical permanent magnet sealed in heavy wall Pyrex brand glass.
9235-R. 9 2 3 5 - C . Stirring Apparatus, Magnetic, w i t h enclosed rheostat, Thomas, as above described. Rheostat, with graduated dial, is mounted in stirrer housing. Complete with two magnetized Stirring Bars A and B, i.e. one Kel-F coated, T/e-inch long X ]A-inch diameter; the other Pyrex brand glass coated, 1 3A inches long by 7 / 16 -inch diameter; also 5 ft. 3-wire connecting cord and conventional 2prong plug cap and directions for use. Power consumption 7 watts; for 1 1 5 volts, 6 0 cycles, a.c. only. Without glass vessel 35.25 9235-G.
Ditto, but without Stirring Bars
31.00
9 2 3 5 - R . Stirring Apparatus, Magnetic, Original M o d e l , Thomas, similar to 9 2 3 5 - C but with separate rheostat for control of speed at a distance of approx. 3 0 inches. Complete with two Stirring Bars A and Β 35.75 9235-S.
Ditto, but without Stirring Bars
32.50
Overall length, approx. inches Diameter, approx. inches
Vt V32
7
1 -% /i6
Each
1.80
1.95
9 2 3 5 - U 7 . Stirring Bars, Magnetized, Kel-F Coated, Vac uum Tested, Thomas. Consisting of a cylindrical permanent magnet sealed in a transparent, durable shell of Kel-F. Overall length, approx. inches Diameter, approx. inches
7
A Ά
h
Each
1.30
1.60
\-Ya /n
2 /i6
5
2.25
9 2 3 5 - U 8 . Stirring Bars, Magnetized, Teflon Coated, Vacuum Tested, Thomas. Consisting of a cylindrical per manent magnet sealed in a durable shell of Teflon, a tough, opaque white plastic. Overall length, approx. inches Diameter, approx. inches
1 /i6
5
Each
1.66
l- 5 /e Vt 2.00
2-'/e /t
3
2.96
1 0 % discount in lots of 1 2 , 1 5 % discount in lots of 7 2
Copy of Bulletin 778 sent upon request. SYMBOL OF QUALITY
A.H.T.CO.
ARTHUR H. THOMAS
SPECIFICATION
COMPANY
Laboratory Apparatus and Reagents
I LABORATORY APPARATUS |
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