epoxide-platinum (8 pin DIN, K constant=1,0 cm^-1) (Cat. No. 011050) 

 
 
epoxide-graphite (8 pin DIN, K constant=0,475 cm^-1) (Cat. No. 013005A) 

 
 
glass, for ultrapure waters (0,01 mS/cm to 300 mS/cm range, 8 pin waterproof DIN, K constant=0,1 cm^-1)(Cat. No. 013016MD) 

 
 
epoxide, for field studiem (0 mS/cm to 200 mS/cm range)(Cat. No. 014005) 

 
 
epoxide-graphite (0 mS/cm to 200 mS/cm range, MiniDin, K constant=0,475 cm^-1)(Cat. No. 013005MD)