A:
These membranes will not work with the Oakton 100 DO meter.
For the Oakton DO 100 you the replacement part numbers are as follows:
35640-71 (elect
35640-74 (5 pack of membranes)
35640-75 (25 pack of membranes)
35640-79 (membraine Installation tool)
or you can order the pre assembled membranes:
35640-72 (preassembled membrane, membrane lock, O-ring and cap)
Answered on 9/18/2009 by Aaron from Tech Support