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



17 



N0.3O4-. 



No.3O6, 



No.3O2. 



302. ARSENIC TUBES, of hard glass. 



Stvle A B C D 



Each $0.12 .14 .16 .16 



304. AKSENIC TUBE, of Pyrex combustion tubing, with constriction. Length, 15 inches .60 



306. ARSENIC TUBE, of transparent silica. Length over all, 6 inches; length of constriction. 3 



inches. May be used repeatedly $1.50 



ASBESTOS MATERIAL 



308. ASBESTOS CEMENT (Retort Cement), fire and acid proof, for nse with muffles, retorts, 

 electric furnaces, etc. Put up in cans ready for use. 



Weight, pounds 1 5 



Each 30 .90 



310. ASBESTOS CLOTH, 36 inches wide, unaffected by acid, fire, etc. 



Description Fine. Medium. Heavy. 



Weight per yard, Ibs 1% 2% 2%' 



Per yard . . .' 4.00 5.40 6.80 



312. ASBESTOS CORD or TWINE, in 1 pound balls. 



Xo A B 



Diameter, inches % 6 % 



Per Ib 2.75 2.75 



ASBESTOS GLOVES AND MITTENS, see Gloves. 

 314. ASBESTOS PAPER for filtering acids, in rolls 36 inches wide, weighing about 1 pound to the 



square yard. Thickness, about 0.028 inch Per Ib. $0.40 



316. ASBESTOS PADS, % inch thick, with iron bound edges; for protecting table tops, etc. 



Xo A B C D 



Dimensions, inches 8%i8% 11x11 15x15 10x16 



Each .30 .45 .70 .60 



318. ASBESTOS PLATE or PAD, round, with iron bound edges and ring for suspension. Diameter, 



8 inches .10 



320. ASBESTOS SHEET, 40x40 inches, fire and acid proof. 



Thickness, inches fe %6 % %6 % % % 



Weight per sheet, Ibs. . 2 12 16 20 32 



Per square foot 10 .20 .50 .75 .90 1.20 1.70 



Per sheet 60 1.20 3.00 4.50 5.50 7.20 10.20 



322. ASBESTOS SHEETS, square, l^ 6 inch in thickness. 



No A B 



Dimensions, inches 4x4 6x6 



Per dozen .20 .45 



ASBESTOS SLATE, Transit*, acid-proof, for protecting table tops, building apparatus, etc. 

 The best laboratory material for heat and electrical insulation. Can be cut with ordinary saw. 

 Thickness, in % ^ ifa % ifa 



324A. ASBESTOS SLATE, 42x48 in Per sheet 2.70 4.10 5.40 8.00 10.70 



324B. ASBESTOS SLATE, 42x96 in Per sheet 5.40 8.20 10.80 16.00 21.40 



324C. ASBESTOS SLATE Per sq.ft. .30 .45 .60 .90 1.20 



326. ASBESTOS SLATE SQUARE, 12xl2x% in. Superior to an asbestos pad 30 



