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A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



3653 



3653 PLATINUM TIPPED TWEEZERS. Nickel plated. 



3653(c) PLATINUM FOIL. 



Size Light Medium Heavy 



Thickness 1-1000 1-500 1-250 in. 



Weight, per square inch 0.353 0.705 1.411 grammes 



3653(d) PLATINUM SPATULAS. Standard size spatulas weight approximately as 

 many grammes as their length in centimeters. 



3653(g) PLATINUM WIRE GAUZE. 



52 mesh, .004 in. wire, per square 



inch, .550 gr. 

 45 mesh, .0085 in. wire, per square 



inch, 1.500 gr. 



3653(h) CALORIMETER PAN AND HOLD- 

 ER. Pan, 5.0 gr. Holder, 6.0 gr. 



At prevailing market price. 



3653(h) 



PLATINUM SUBSTITUTES 



We are also prepared to supply any articles of standard shapes and sizes of 

 PALAU WARE. This special rare metal alloy, developed for the purpose of 

 replacing expensive platinumware, contains less iridium than the regular platin- 

 umware usually obtained (report of Bur. of Stds., December, 1916), is guaran- 

 teed to withstand continuously 1,300 C., and has been used by prominent chem- 

 ists in daily laboratory routine and in varied lines of work, both metallurgical 

 and industrial. 



BARIO crucibles can also be furnished by us. They are guaranteed abso- 

 lutely resistant to both acid and alkali, and for such ordinary laboratory uten- 

 sils are equal to platinumware and cost but a small fraction as much. 



