SCIENCE— ADVERTISEMENTS 



SHARPLES SUPER-OENTRIFUGE 



MEDICAL LABORATORY MODEL 



THE TEST 



IN OUR STOCK FOR IMMEDIA TE SHIPMENT 



OF SERVICE 



The Sharpies Laboratory Super-Centrifuge is an instru- 

 ment for the application of very high centrifugal force to 

 liquids. The machine does not resemble the tube or bottle 

 centrifuge but is continuous in its operation — liquid is passed 

 continuously through the rotating member where it is sub- 

 jected to a force of 41,250 times the force of gravity, and the 

 liquid is then continuously discharged. In this way the volume 

 of liquid that can be handled per hour is limited only by the 

 rate at which a proper centrifugal treatment can be effected. 



In the M. L. (Medical Laboratory) Model, for Bac- 

 teriological and Serological Work, the bowl is provided 

 with one outlet and with one collecting cover and delivery 

 spout. The M. L. Model has been widely used in U. S. Army 

 and other laboratories in the preparation of pneumococcus 

 vaccine and by the large manufacturers of other biological 

 preparations in the separation of various immunitive sera and 

 the collection of bacterial matters, as well as for the clarifica- 

 tion of agar, of gelatine, of broth, and other components of 

 culture media. 



3181. Super-Centrifuge, Sharpies Medical Laboratory Model, with bowl provided 

 with one outlet and with one collecting cover and delivery spout. With 

 steam or compressed air turbine drive for continuous operation at a maxi- 

 mum speed of 40,000 r.p.m., requirmg a steam pressure of 22 lbs. and con- 

 suming 100 lbs. of steam per hour. When operated by compressed air 

 the same pressure is required and the consumption is 16 cu. ft. of air per 

 minute $160.00 



NOTE— Whei-e neither steam nor compressed air is available, the centri: 

 hand drive, by v;hich method an approximate maximum speed of 25,000 

 drive, by v,-hich method an approximate maximum speed oi .^6, COO 

 a speed of 1750 r.p.m., and a three-inch pulley is requirei 

 suits from the high speeds obtainable with the turbine dr: 

 on special order only. 



Prices subject to change without notice 



can be operated with crank for 

 1. is obtainable; or with electric 

 ailable. A motor of J4 h-p., with 

 the great advantage of the super-centrifuge re- 

 furnish the hand drive and electric motor drive 



WHOLESALE, RETAIL AND EXPOF5T MERCHANTS 



WEST WASHI^SGTON SQUARE PHILADELPHIA, U. S. A. 



CABLE ADDRESS, "BALANCE," PHILADELPHL\ 



