MANDLER DIATOMACEOUS FILTERS 



FOR BACTERIOLOGICAL WORK 



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No. 27689. 



Mandler Diatomaceous Filter Cylinders 

 with Metallic Headpiece 



Cross section showing Mandler Diatomaceous 



Filter attached to glass mantle in 



correct position for filtering 



Mandler Diatomaceous Filters are specially made for the filtering of serums, toxins and 

 other sterile liquids of all sorts. The Infusorial Products Company, of Toledo, have been 

 experimenting since 1914 toward the perfection of diatomaceous earth filters for bacterio- 

 logical laboratory use in connection with their manufacture of filters for household and 

 manufacturing purposes. With the assistance and cooperation of bacteriologists in the 

 laboratories of several of the largest manufacturers of biological products, U. S. Government 

 Departments, etc., a filtering mass has now been perfected which seems likely to surpass in 

 quality that heretofore used for similar purposes. 



The metal caps are of heavy brass nickel plated and provided with a new feature in the 

 way of a special projection fitting inside the tube, which prevents the cap from working back 

 and forth with a tendency to destroy the cement joint. The cementing of the cylinder to 

 the metal cap is a distinct improvement over the method heretofore followed. With the 

 exception of a new size, 8 x I5 inches, the cylinders offered correspond exactly in size and 

 may be used in the same fittings as the filters of foreign make heretofore widely used for 

 similar purposes. 



27689. Filters, Mandler Diatomaceous, cylinders only, with metallic headpieces, with 

 certificate of air pressure test. 



Size, inches. 

 Each, net. . 



10x2 



8xU 



8x1 



5x1 



.^2X0 



llxl 



3.50 



3.15 



3.00 



2.50 



1.25 



1.15 



27690. Filters, Mandler Diatomaceous, with glass mantle with circular opening in 



bottom as shown in illustration, but without flask or other container for filtering 



Size of cylinder, inches 10x2 8xl| 8x1 5x1 2|xf Ifxf 



Each, net 5.25 4.40 4.25 3.50 2.00 1.65 



27691. Glass Mantles only, for Mandler Diatomaceous Filters, such as are included with 



No. 27690. 



Size, inches 14x4 11x2^ 5fx2i 4x1 2^x1 



Each, net 1.75 1.25 1.00 .75 .50 



ARTHUR H.THOMAS COMPANY 



IMPORTERS— DEALERS— EXPORTERS 



LABORATORY APPARATUS AND REAGENTS 



WEST WASHINGTON SQUARE PHILADELPHIA, U.S.A. 



