CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



439 



!No. 12038. 



No. 12048. 



No. 12040. 



No. 12049. 



12038. SHAKING APPARATUS, Electric, for four bottles. Constructed of heavy cast iron making it 

 strong and rigid, with ball bearings affording smoothness of motion. The clamps will take 

 ordinary bottles from 200 to 1000 cc, and by means of blocks, smaller bottles and tubes may 

 be held. The speed may be varied according to the load; for four 100 cc bottles, 300 r. p. m. 

 should be used; for small bottles about 600 r. p. m. 



No A B C D 



A.C. D.C. 



For volts 110 220 110 220 



Each $134.40 134.40 129.60 129.60 



12040. SHAKING APPABATUS, Electric, similar to No. 12038, but for two bottles or tubes up to 50 cc 



capacity. Especially suited for sputum work. The speed is about 1000 r. p. m., subjecting 



the bottle contents to very vigorous shaking. 



No A B C D 



A.C. D.C. 



For volts 110 220 110 220 



Each 84.00 84.00 78.00 78.00 



12041. HEAD for No. 12040, to take two Erlenmeyer flasks of 150 cc capacity 14.40 



12042. HEAD for No. 12040, to take four 50 cc bottles or tubes, at a maximum speed of about 800 



r. p m 28.80 



12048. SHAKING APPARATUS, Electric, Rickard's, for Sputum Bottles, very convenient for labora- 

 tories examining many samples each day, as in Boards of Health. Arranged for shaking 

 samples in the original collection bottles, thus obviating danger of confusion or contamina- 

 tion If it is considered desirable to centrifuge the sputum in the same bottle, this may be 

 done by using No. 2735 Sputum Bottle Carrier with Heads Nos. 2681 of 2685 and Centrifuges 

 Nos. 2670 or 2696. With variable speed control for motor. Maximum speed with 24 bottles, 

 about 600 r. p. m. Without bottles. 



No A B C D 



A.C. D.C. 



For volts 110 220 110 220 



Each 134.40 134.40 129.60 129.60 



SPUTUM BOTTLES for No. 12048, see No. 2757. 



12049 HEAD for No. 12048 to take four bottles up to 1000 cc, for use in place of 24 sputum bottle 

 head 57.60 



