Interesting that they differ for storage. Here is a quote from the email I
received from Milwaukee:

"for storage use bottle drinking water in the protective cap."

There is no reference in their manual for storage, but they do have
Electrode Storage Solution listed as an optional accessory. It doesn't say
what it contains.

I guess the best bet is to check with the manufacturer for recommendations.


"Rick" wrote in message
news:zQVgb.48073$pl3.19733@pd7tw3no...

"Jim K" wrote in message
om...
I have the Milwaukee SMS122 pH controller and found out the following
from
the company:

1. The 4.01 isn't necessary since the monitor is used mostly for
aquariums
and a pH that low is usually not found. In fact, they don't include one
with their monitor.

2. It is only necessary to dip the tip of the probe into about 3/4 inch
of
calibration solution.

3. De-ionized, RO or bottled drinking water can be used to rinse and
store
the probe.




from the instruction manual of my Hana Instrument which I believe also
makes
the Checker model. Note the caps are theirs DO NOT USE DISTILLED OR
DEONIZED WATER FOR STORAGE PURPOSES.

Rick