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



237 



No. 5352. 



No. 5354. 



No. 5356. 



5332. FILTERING APPARATUS for Soils, Brigg's Design, consisting of four No. 5320 Filters, 

 mounted as shown, complete with air reservoir of 10 gallons capacity, pressure gage and spe- 

 cial compression pump ; . . $100.00 



5334. FILTERING APPARATUS for Serums, Brigg's Design, same as No. 5332, but with special bou- 

 gies for serum filtration 100.00 



5336. FILTERING APPARATUS for Soils, Brigg's Design, same as No. 5332, but with four porcelain 

 lined Filters No. 5324 88.00 



5338. FILTERING APPARATUS for Serums, Brigg's Design, same as No. 5336, but with special bou- 

 gies for serum filtration " 88.00 



5340. FILTER TUBE, for Soils, Pasteur-Chamberland, French make, for use with Nos. 5320, 5324, 

 5328, 5332, and 5336. Length over all, 10 inches; diameter of unglazed cylinder, 1 inch 2.00 



5342. FILTER TUBE (Bougie), for Serums, Pasteur-Chamberland, French make, for use with Nos. 

 5322, 5326, 5330, 5334 and 5338 2.00 



5346. FILTERING APPARATUS, Fitzgerald's Constant Level, consisting of a 300 cc glass reservoir, 

 having a long glass rod fitted with a ground stopper for closing the lower opening when fill- 

 ing the apparatus. The liquid to be filtered is introduced through the opening at the side 2.25 



5348. FILTERING APPARATUS, Tray Form, consisting of glass tray with ribbed bottom and outlet 



at one corner. The entire surface of the filter paper is utilized, affording four times as much 



filtering surface from the same sheet as in a funnel. Takes filter paper 12x12 inches. Widely 



used for separating liquids from impurities where the weight of the separated material is not 



needed. Complete with supporting tripod as shown 4.50 



5349. FILTER PAPER for No. 5348 Filtering Apparatus, in sheets 12x12 inches. 



A. For rapid filtration per 100 sheets 3.20 



B. Heavy paper for finer work per 100 sheets 6.00 



5352. FILTER BAGS of felt. 



Capacity, quarts 1 2 4 



Each 2.00 2.25 2.75 



5354. FILTER BALLOON, Pukal, of unglazed porcelain, for filtering solutions from outside by means 



of a filter pump. Height, 200 mm; diameter, 125 mm; capacity, about 400 ee 1.65 



FILTER BOUGIES, see Filter Tubes Nos. 5340 and 5342. 



5356. FILTER CONES, Alundum, for rapid filtration by suction, for use in any 60 funnel, to which 



they are attached by a wide band of rubber tubing. They have a large filtering area and can 

 be completely washed free from all soluble salts, as the entire filtering area is within the fun- 

 nel. They may be completely cleansed by reverse washing and ignition, and used repeatedly. 

 Complete with wire stand for support when not in use. Medium porosity only carried in stock. 

 Fine and coarse porosities can be supplied on short notice. 



No A B C D 



Capacity, cc 20 50 60 100 



Diameter, inches 1% 2% 3 4% 



Height, inches 1% 6 1% 2% 6 3% 



Each 30 .35 .40 .50 



5357. RUBBER GASKETS for use with No. 5356. No A B C D 



For filter cone, ee 20 50 60 100 



Each 05 .05 .08 .10 



