WE HAVE ON HAND FOR IMMEDIATE SHIPMENT IN ANY QUANTITIES 



PETRI DISHES AND TEST TUBES 



«=» Fa OF AMERICAN MAKE 



No. 25G06 



I 



No. 47948 



No. 25602 



No. 47952 



25602A. Petri Dishes. These dishes are very free from striae and will stand repeated sterili- 

 zation with a minimum of breakage and corrosion. Bacteriologists have reported them 

 as being more satisfactory and durable than our regular imported article. 



Size, mm. 100x10 100x15 150x10 



Outside diameter of bottom, mm 95 95 145 



Outside diameter of top, mm 100 100 150 



Each .20 ^20 M 



Per gross 25.00 25.00 70.00 



25606. Porous Earthenware Covers for Petri Dishes, unglazed throughout; the smaller size 

 is supplied to fit the bottoms, and the larger size to fit the tops of No. 25602A Petri 

 Dishes 100 mm in diameter. 



Inside diameter, inches 3| 4| 



Each ^06 i06 



Per 100 3.50 3.50 



25607. Earthenware Covers for Petri Dishes, unglazed inside but glazed on top and sides; 

 reducing evaporations of water from the medium and preventing possibility of contami- 

 nation due to absorption in the porous cover. As suggested by C. C. Young of the 

 Kansas State Water Survey. 



Each 08 



Per 100 7.00 



47948A. Test Tubes, thick wall, without lip, for use as culture tubes in bacteriology. These 

 tubes are guaranteed not to corrode or give off alkali after repeated sterilization in the 

 autoclave at 120° C. They are made of a superior resistance glass of great mechanical 

 strength and will stand an unusual amount of mechanical stress without breaking. 



Length, mm 100 100 120 120 120 150 150 150 



Outside diameter, mm 12 15 13 16 18 16 18 20 



Per 100 1.60 1.65 1.75 1.85 1.90 1.95 2.00 2.10 



47952A. Test Tubes, medium weight, with flat well formed lip, for Wassermann and other 

 serological work. Of resistance glass showing a minimum amount of color and in sizes 

 selected especially for serological work. 



Length, mm 65 75 100 150 



Outside diameter, mm 12 10 10 10 



Per 100 95 .95 1.00 1.05 



NOTE — Where the letter "A" i? used after a catalogue number it indicates that the article now in our stock Is of 

 American manufacture and not from our usual European source. 



ARTHUR H. THOMAS COMPANY 



IMPORTERS— DEALERS-EXPORTERS 



LABORATORY APPARATUS AND REAGENTS 

 WEST WASHINGTON SQUARE PHILADELPHIA, U. S. A. 



