330 



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



5162 



1170 



Neubauer Ruling for blood counting Fuchs-Rosenthal Ruling for spinal fluids 



COMPONENT PARTS OF HAEMACYTOMETERS 



5162 Levy Counting Chamber with Neubauer ruling, with two cover glasses, 



without case $ 7.00 



6164 Levy Counting Chamber with Neubauer ruling, with two cover glasses, 



without case, with Bureau of Standards certificate 9.00 



5166 Levy Counting Chamber with double Neubauer ruling, with two cover 



glasses, without case 10.00 



5168 Levy Counting Chamber with double Neubauer ruling, with two cover 



glasses, without case, with Bureau of Standards certificate. 13.00 



5170 Levy Counting Chamber with Fuchs-Rosenthal ruling, for cytological in- 

 vestigations of cerebro-spinal fluids, with counting chamber 0.2 mm. 

 deep, with two cover glasses, without case '. . 6.00 



5172 Diluting Pipette, Thoma, for red corpuscles, diluting 1 to 100 and 1 to 200, 



with rubber tubing and bone mouthpiece 2.00 



5174 Diluting Pipette, Thpma, for red corpuscles, as above, but with Bureau of 



Standards certificate . . 3.50 



5176 Diluting Pipette, Thoma, for white corpuscles, diluting 1 to 10 and 1 to 20, 



with rubber tubing and bone mouthpiece ; 2.00 



5178 Diluting Pipette, Thoma, for white corpuscles, as above, but with Bureau 



of Standards certificate 3.50 



5180 Mouthpiece, only, of bone, for above diluting pipettes 05 



5182 Rubber Tubing, 3 mm. bore, 1 mm. wall, for use with above diluting pipettes, 



per foot 10 



5184 Cover Glass, size 20x21 mm., approximately 0.5 mm. thick, with accurate 



^plane surface in accordance with the requirements of the Bureau of 



^Standards, for use with Levy counting chamber with single ruling; 



also suitable for use with the ordinary Thoma form of counting 



chamber 30 



5186 Cover Glass, size 20x26 mm., similar to above, for use with Levy counting 



chamber with double ruling 30 



5188 Case, of leather, velvet lined, for counting chamber only 1.00 



5190 Case, of leather, velvet lined, for complete Haemacytometer 4.00 



Prices subject to change wtihout notice 



DOUBLE COUNTING CHAMBERS We especially recommend the use of 

 the double chamber, in which the rectangular strip in the center of the cell is divided 

 by parallel moats and each half provided with a Neubauer ruling, so that both red and 

 white counts may be made at the same time without the necessity of cleaning and 

 refilling the counting chamber. This double type of counting chamber has been for 

 several years used in, and recommended by, the clinical laboratories of the Johns 

 Hopkins Medical School and has been recently purchased in large quantities by the 

 U. S. Army Medical Department, and is rapidly coming into wide use because of its 

 convenience. 



