LABORATORY SUPPLIES AND CHEMICALS 



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3772(a) SIEVES, Standard. Testing Sieves made to the Tyler Standard Screen Scale 

 are recommended for all laboratory work, but the testing sieves from wire 

 cloth of any mesh and diameter of wire which may be required will be 

 made to order. The table on this page shows the prices on testing sieves 

 made from the regular grade of brass wire and fine phospor bronze wire 

 cloth. Sieves coarser than 20 mesh take the same list price as 20 mesh. 



3772(b) SIEVES, Standard, Howard & Morse's brass gauze tin frames, accord- 

 ing to American Society of Civil Engineers, set of 8 sieves, varying 

 in diameter from 5 to 8 inches, one of each of the following 10-20- 

 30-40-50-80-100 and 200 mesh. Per set nested $40.00 



