LABORATORY SUPPLIES AND CHEMICALS 



93 



2235 (x) 



2235(y) 



2235(x) BRUSH. For cement briquette moulds, with brass wire and wooden 



handle. Brush part 5 inches long $0.75 



2235(y) TROWEL. For mixing cement. Small size , 1.00 



2235(z) TROWEL. Same as No. 2235(y), but larger 1.25 



2235-1 



2235-1 



SOUNDNESS TEST APPARATUS, Le Chatelier. Very easily operated. 

 With instructions .$3.00 



SPECIFIC GRAVITY FLASK 



2236 



2237 (a) 



2237 



2236 SPECIFIC GRAVITY APPARATUS, 



Schumann's specific gravity bottle 

 with tube graduated to 50 cc. 



in 1/10 cc $3.50 2237(b) 



2236(a) SPECIFIC GRAVITY APPARATUS, Le Chatelier's. For cement. .. . . .$4.00 



2237 SPECIFIC GRAVITY APPARATUS, Jackson's. Consisting oi the 



burette so graduated as to give direct readings in specific gravity, 

 and the heavy Erlenmeyer flask with hollow ground glass stopper 

 as described in R. K. Meade's Portland Cement (Page 281, 1906). 

 The burette and flask 7.50 



2237(a) EXTRA FLASK for No. 2237 Specific Gravity Apparatus 3.50 



2237(b) SPECIFIC GRAVITY APPARATUS. Standard. Improved form of 



No. 2236 (a) . 6.00 



