78 



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



No. 1140. 



No. 1142. 



Nos. 1144-8. 



No. 1150. 



No. 1152. 



BEAKERS, Phillips, see Flasks, Assay. 



1140. BEAKERS, Sugar, heavy, with lip. 



Capacity, cc 175 900 



Each $0.30 .65 



1142. BEAKER, Heavy Tumbler Shaped, with pour-out, not for boating. Capacity, 8 ounces 25 



1144. BEAKERS, Aluminum, with lip. Capacity, cc 125 250 500 1000 



Each 60 .85 1.00 1.65 



1146. BEAKERS, Copper, with lip. Capacity, cc 125 250 500 1000 



Each 65 .85 1.10 1.75 



1148. BEAKERS, Copper, with lip, nickel-plated for sugar analysis. 



Capacity, cc 125 250 500 1000 



Each 70 .90 1.15 1.65 



1150. BEAKERS, Best American Porcelain, glazed inside and outside, without lip. 



No 1 2 3 3A 4 5 6 



Capacity, cc 165 340 580 700 970 1500 1775 



Diameter of body, mm 52 65 78 83 93 104 110 



Diameter of rim, mm 62 74 87 93 103 114 122 



Height, mm 93 118 143 154 167 198 209 



Each i 75 1.00 1.20 1.50 1.80 2.50 4.00 



1152. BEAKERS, Dye Pots, Best American Porcelain, glazed inside and outside to heavy supporting 

 rim. Without lip. 



No A B 



Capacity, cc 310 1500 



Diameter of body, mm 74 108 



Diameter of rim, mm 79 120 



Height, mm 123 188 



Each 1.20 2.75 



1156. BEAKERS, Opaque Fused Silica, Griffin's low form with lip. Capable of resisting tempera- 

 tures up to about 1200C. continuously, and unaffected by mineral or organic acids except 

 hydrofluoric, and phosphoric at high temperatures. Alkalies in solution at low temperatures 

 do not affect the ware, but at high temperatures or in fusions readily attack it. Its very low 

 coefficient of expansion enables it to withstand sudden changes in temperature. 



Capacity, cc 50 100 150 200 250 400 500 600 800 



Each 1.13 1.25 1.38 1.50 1.81 2.13 2.44 2.75 3.31 



1158. BEAKERS, Transparent Quartz, with lip, prepared from rock crystal. Melting point about 

 1600C. Not attacked by water at room temperatures or at the boiling point. Less soluble 

 in alkaline solutions than the best glass. Not attacked by dilute acids except hydrofluoric; 

 concentrated sulphuric acid has no appreciable effect at 100C. 



Capacity, ec 25 50 100 200 250 



Each 4.80 7.20 12.50 18.00 21.00 



