46A
ANALYTICAL
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CHEMISTRY
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"Hollow Spindle" Stirrer
Sparkless, i n d u c t i o n 1/79 H . P . m o t o r w i t h hollow a r m a t u r e secures s t i r r e r shaft o n lower e n d w i t h screw c h u c k a n d o n u p p e r e n d w i t h s p r i n g centering: device. Glass, m e t a l or p l a s t i c s t i r r e r s w i t h s h a f t 7/32" t o 5/16" c a n be u s e d . S u p p o r t a r m is 9" by J-•/'. No. 77-677 " H o l l o w S p i n d l e " S t i r r e r o p e r a t e s from 115 volt, 50-60 cy. A.C. W i t h o u t propeller, $22.50. S t a i n l e s s Steel S t i r r e r s No. 77-837 have \i" shaft a n d 2" propeller. 12" l e n g t h , $2.25; 18", $2.50; 24", $2.75.
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Miff 08811151
CORPORATION
1. Operator can vary work ing length of stirrer shaft by moving stirrer up or down in hollow armature of motor. 2. No need to change stirrers for different size containers. 3. To place and remove containers, raise the stirrer only; leave the motor stationary.
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PHOTOVOLT Line-Operated Super-Sensitive Electronic MULTIPLIER-PHOTOMETER M O D . 5 2 0 - M For the exact m e a s u r e m e n t of e x t r e m e l y low light v a l u e s d o w n to 1 / 1 0 , 0 0 0 m i c r o l u m e n . For Absorption and flame photometry Colorimetry through microscopes Scintillation measurements on crystals Fluorescence trace analysis Monochromatic color densitometry Measuring high densities on micro areas Light measurements through telescopes Write ior Bulletin #360 to
PHOTOVOLT CORP. 95 Madison Avenue
N e w York 16, Ν. Υ.
