GENERAL APPARATUS AND MANIPULATION 



185 



Lucite wafer 

 (insulator) 



Picein 

 plug 



Lucite wafer 

 (insulator) 



Heated glass 

 rod 



Lucite wafer 



Paraffin 



Corning 015 

 glass capillary 



Fig. 71. Capillary glass electrode assembly. 

 From Claff and Swenson (1944) 



