LABORATORY SUPPLIES AND CHEMICALS 



237 



3628 



3630 



2632 



3636 



3637 



3628 



2632 



3636 



3637 



PLATES, Streak, unglazed, as used for arsenic tests and by mineralogists. 



Size number 123456 



Length, m.m 65 70 85 90 100 140 



Width, m.m 50 40 60 65 60 90 



Thickness, m.m 3 3 4 4 4 4 



Each $0.20 .20 .32 .35 .40 .50 



PLATES, porcelain, flat surface, glazed throughout, with exception bottom 



surface. Length, 175 m.m.; width, J37 m.m.; thickness, 6 m.m. Each.. $1.50 



PLATES, Color, glazed throughout, with exception of bottom surface. 



Size number 1 2 3 4 



Dimensions, m.m 110x90 160x25 180x110 180x140 



Number of depressions 12 12 24 30 



Each $0.70 .95 1.35 1.50 



PLATES, porcelain. Porous, round, for drying crystals and precipitates. 



Diameter, m.m 145 175 220 225 



Each r $0.90 1.20 2.00 2.10 



PLATES, porcelain. Porous, square, for drying crystals and precipitates. 



Length, m.m 150 200 300 400 300 305 



Width, m.m 150 200 300 400 200 305 



Each $0.25 .55 1.25 3.00 3.00 4.00 



PLATINUM WARE 



We furnish only first-class platinum ware and every article is inspected before leav- 

 ing the factory, and again before shipment is made. We claim that the products of 

 this manufacture are equal to any on the market, foreign or domestic. Special care is 

 taken in the manufacture of our platinum ware and apparatus and only the best grade 

 of metal is used for it. We guarantee these products to give full satisfaction. We 

 furnish everything in the platinum line. Owing to the fluctuation in the price of 

 platinum, we cannot insert prices for the different kinds of apparatus shown, but same 

 will be cheerfully given on application. 



3639 



2639 Seamless Platinum Filter Cones. 



Diameter, inches 34 



Approximate weight, grammes 1.0 



Perforation of Stock Cones, .020 inch. 

 Perforation from .016 to .025 to order. 

 At prevailing market price. 



1.5 



1 

 2.5 



4.0 6.0 8.0 12.0 



