715 



718 719 



M5 Dialysers, glass, bell-shaped. 



Diameter at narrow end . . . . . . . . ij 



Diameter at wide end . . . . . . . . 3 



Price each . . . . . . . . . . 8d. 



'16 Parchment Paper, best quality, suitable for Dialysers Nos. 712 to 717 



"17 Parchment Paper, as above, cut into squares 



Size . . . . . . . . 12^ 



Price 4d. 



2 



4 

 lOd. 



720 



2| in. 



5 ., 

 I/- 

 per Ib. 



15 

 6d. 



20 

 8d. 



i Glass Basins of heavy glass, for dialysers 



Size . . . . . . .. 8 by 4 in. 10 by 5 in. 



Price .. .. .. ..1/3 2/6 



7 19 Cylindrical Glass Cylinders of stout glass, for dialysers 



Height . . . . 4 5 6 



Diameter .. .. 3^ 4 4k 



Price .. .. .. 6d. 7d. l/- 



'20 Dialysing Filters, by Prof. Dr. Leo Morochowetz, Moscow. 



25 c.m. square. 

 lOd. per do*. 



12 by 5 in. 

 3/6 



8 



4k 



1/4 



9 in. 



4* .. 



1/7 



.Messrs. Schleicher and Schiill are now making a specially cut and folded Membrane of Parchment Paper 

 or Dialysing. 



AH exact description of the apparatus will be found in a leaflet by Prof. Dr. Leo Morochowetz. entitled 

 Appareils et Instruments a 1'usage des Physiologistes." 



Above is a diagram from the above-mentioned leaflet, showing the position of a single filter, also of .1 M-I 

 1 four filters grouped round an upright standard. The diagram shows how the water flows from one filter into 

 he others. By this arrangement a considerable quantity of water is saved, and also by the arrangement and 

 jldin of the parchment membrane, an extraordinary large surface for action is produced, advantages which 

 nyone knowing the subject would detect and at once acknowledge. 



We supply the membranes for the Dialysing Filters to fit funnels of 12 to 15 degrees and 250 nun. high. 

 No. 521 (thick), per 25 membranes 

 No. 522 (thin), 



21 Glass Funnels, with cover extra 



Stands extra. 



1 6 





 



026 



CHEMICAL AND SCIENTIFIC APPARATUS AND I SMICALS 



