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AUTOMATIC DISTILLATION APPARATUS
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SACHLETî THREE MODELS IN FOUR SIZES . . .
ROTOVAP Suitable for batch or continuous operation, Rotovap is completely automatic and provides safe, rapid and efficient evaporation of either dilute or concentrated solutions. The heart of Rotovap is a unique ball bearing spindle and a precision ground hollow ball and socket assembly which permits rapid rotation of evaporating flask without loss of vacuum. Rotovap will distill 100 ml of aqueous solution at 55°C in 10 to 15 minutes under the reduced pressure of an ordinary water aspi-ator. I t s speed, for nonaqueous solutions is correspondingly high. Due to the functional design of Rotovap, evaporator flask can be easily heated with a water bath or infra-red lamp. The condenser flask can be cooled with a special water spray provided with Rotovap. For work with heat sensitive compounds, condenser flask may be cooled with ice. For detailed information, write for folder RV.
[PROMPT DELIVERIES FROM STOCK! 32-922 Rotovap complete as illustrated but without dropping funnelj ring and clamp $185.00 Self Lubricating Teflon Bail and Socket Assembly where all glass system is no! required 32-922TB Teflon Connecting spindle 32-922TC Teflon Connecting elbow 32-922-1 Dropping funnel & ring
$ 9.75 11.50 11.00
FLASH-VAC
Another laboratory standard in the Ultramax line—an extremely accurate buret, within 0.05 ml as required by the National Bureau of Standards. The precision-bore tube assures this accuracy at each graduation. 5 sizes are available in each of 3 models. The valve will not leak or freeze and continues to turn smoothly on the natural glazed surface even after long service. In working with caustic solutions, nothing else will do. All parts are replaceable and inter changeable including the glass tips which eliminate costly repairs due to breakage. Write today for complete information and prices. In fact, contact Fischer & Porter first for all precision formed glass products.
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As with Rotovap, Flash-Vac utilizes the principle of spreading a thin film of solution over a large area by rapidly rotating—60 R.P.M.—the evaporating flask and subjecting the flask to vacuum. Thus the speed of evaporation can be increased 4-5 times without the use of destructive high temperatures. When heat is desired on t i e evaporation flask, an infra-red lamp may be mounted on rear support rod or a water bath may be used (see lower illustration). For details write for Bulletin F-V. 32-922FV Flash-Vac complete with 18-8 stainless steel sleeve with 2 4 / 4 0 taper, Yacjum tube, " O " ring seals, enclosed motor, support rod and clamp. Flask and ring stand optional $96.50
32-924UB UTILITY WATER B A T H Temperature to 100°C. 1 3 " χ 1 î " x 7 " deep. 1000 Watts.. 115 Volts, 60 Cycle S1Î0.00
ûmm TELEPHONES: NEW ΥΟίΚ lEnington 2-1311 NEW JEUSEY ELiiabeth 4 - 1 3 3 0
E. M A C H L E T T & S O N ESTABLISHED
A COMPLETE
SERVICE
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FOR THE
LABORATORY
APPARATUS · INSTRUMENTS · CHEMICALS · GLASS BLOWING 220 EAST 23rd STREET · N E W YORK 10, Ν. Υ.
ÎMS0& CABLE: EMSONGLAS
F I S C H E R a n d P O R T E R CO.
TELETYPE; N.
For further information, circle number 32 A-1 on Readers' Service Card, page 61 A
32 A
LA1065
32-923UB Utility wafer bath for use with Flash-Vac. Temperature to 100°C. 6 % " χ 1 2 " χ 7" deep. 500 Watts, 115 Volts, 60 Cycle $92.50
Y.
1-2444
IS46 COUNTY
LINE
RD., H A T B O R O ,
Circle No. 32 A-2 on Readers' Service Card, page 61 A
ANALYTICAL
CHEMISTRY
PA.
