"Henry" wrote in message
ink.net...
Does anyone know if the probe on a Pinpoint Ph Controller is totally
submersible, or is it necessary to keep the top part (where the wire exits
the unit) dry ???

From the Pinpoint pH Monitor manual:

Probe should be inserted about 1 inch into the liquid to be measured.
Probe may be totally submerged if desired.

See http://www.myreefcreations.com/phmonitor.htm

Cheers,

Michi.

--
Michi Henning Ph: +61 4 1118-2700
ZeroC, Inc. http://www.zeroc.com