Se 220 Replacement Probe for Mw500 Orp Meter

Milwaukee Instruments
The Se220 is an original OEM replacement probe for the Mw500 negative ORP meter in its on sale.
If you notice skewed results when testing the water quality maybe time to replace the probe model number SE220 on your ORP meter.  Be sure to get the Ma9025 negative ORP calibration solution also with this purchase.