LABORATORY SUPPLIES AND CHEMICALS 



280 



3910 



3911 



3910 SUPPORT, Test tube, wood, for drying test tubes. 



With pins 25 50 



Each $1.00 1.75 



3911 SUPPORT, Test tube, of zinc, round form, for 18 tubes, useful for heating 



tubes in a water bath $0.75 



3913 3913(a) 



3913 SUPPORT, for Wassermann tubes, made of polished copper, will stand ster- 

 ilization, for 40 tubes 3x^4 inches in 4 rows $2.50 



3913(a) SUPPORT, for Wassermann tubes, polished copper, 13 inches long, for 



24 tubes SxJHj inches 2.00 



3913(b) 



3913(b) SUPPORT, Test tube, made of copper, with $4 inch holes for twelve test 

 tubes. The lower shelf on which the test tube rest is flanged up, form- 

 ing a pan to receive the contents of the tubes in case any of them 

 should break. 



Large, 3 by 4 by 4^ inches high $1.00 



Small, 3 by 4 by 2 % inches high 75 



3914 3918 



3914 SUPPORTS, Universal; Schellbach's $3.00 



3918 SUPPORTS, with 22-inch extension 3.00 



