HIGH TORQUE
ACID DIGESTION BOMB New from
PARR Provides a r a p i d a n d safe method for dissolving glass, silicates, n i t r i d e s , refracrocks and other tory materials in HF, HC1 and other strong mineral acids at temp e r a t u r e s t o 1 5 0 ° C. a n d pressures t o 1200 psig. Acids d o not attack this b o m b a n d c o m p l e t e rec o v e r y is a s s u r e d , i n c l u d ing any trace elements.
STIRRERS •
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Stepless mechanically adjusted speed regulation 40-315 RPM 315-2700 RPM NO RHEOSTAT Enclosed induction type, nonsparking ball bearing motor— 115 Volts, 60 Hz. Built-in speed indicator dial Torque increases with decreasing speed Flexible positioning Cast aluminum housing 7 hollow spindles for rapid stirring rod adjustment to any height Rods up to X" diameter Complete with chuck and key Full year warranty
The acid charge is held in a 25 m l . thick walled Teflon* cup w i t h i n a s t u r d y metal b o m b . T h e c u p can be removed f o r convenient sample recovery and easy w a s h i n g . No w r e n c h e s o r clamps are needed t o p r o d u c e a t i g h t seal. * d u P o n t TFE f l u r o c a r b o n resin W r i t e f o r Data Sheet 4 7 4 5
CAT. NO. 4-741170 RZR-10 STIRRER (stand and stirring paddle extra)
$98.00 Continuously variable mechanical speed regulation 25-2000 RPM Speed indicator Hollow shaft for rapid adjustment of stirrer height High gloss baked on enamel finish Complete with chuck and key Full year warranty
Cross-Section Diagram
PARR INSTRUMENT COMPANY 2 1 1 Fifty-Third St.
Moline, Illinois 6 1 2 6 5
Circle No. 71 on Readers' Service Card
wm
CAT. NO. 6-050100 RM-180 STIRRER, For 115 Volts, 60 Hz.
STERILITY INDICATORS
IABÊIS,
& AUTOCLAVE TAPES
$125.00
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Designed for extra heavy duty-continuous operation Single spindle head swivels 360°—clamps at any angle Speed range 200-2000 RPM Choice of 3 stirring heads 7-70 RPM 70-900 RPM 200-2000 RPM Accommodates rods up to % " diameter Complete with chuck and key Full year warranty
CAT. NO. 4-742300 RZR-20 HEAVY DUTY STIRRER, For 115 Volts, 60 Hz. (stand and stirring paddle extra)
$198.00 Available through major lab supply dealers. Ask for BULLETIN 195
U n i q u e TSI® (Time Sterile Indicator) Tapes and Labels are c h e m i c a l l y i m p r e g n a t e d to p r o d u c e t h e w o r d s " S T E R I L E " when e x p o s e d to t h e proper levels of heat. A c o m p l e t e line of TSI tapes and labels are available for use in standard and high v a c u u m a u t o c l a v e s as well as high temperature ovens. Also available are T i m e T h e r m a l T a p e s for use in t e m p e r a t u r e ranges of — 1 9 6 ° C to + 5 5 0 ° F . All tapes are pressure-sensitive, stick q u i c k l y and remove cleanly. E c o n o m i c a l T i m e TSI tapes and labels i n crease Lab efficiency.
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PSC
FREE BROCHURE! Write for samples, illustrated brochure, and the name of a dealer near you!
PolyScience Corporation
2101 DEMPSTER STREET EVANSTON. ILLINOIS 60201 (312) 475 2909
P R O F E S S I O N A L T A P E COMPANY, INC. 363
Circle No. 145 on Readers' Service Card
60 A
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ANALYTICAL CHEMISTRY, VOL. 42, NO. 6, MAY 1970
EAST
BURLINGTON
ROAD,
RIVERSIDE,
Circle No. 85 on Readers' Service Card
ILLINOIS
60546
