Hi everyone,

I have a couple of questions regarding how everyone monitors their DI wash process (those that still do water washing).
We have an old Electrovert unit with 3 water tanks: the pre-wash, wash and rinse.  The water temp is set to 140 deg F.
We currently have a hand held TDS meter and check the water at a minimum weekly, more often if we have washed a large number of parts.
We are looking at adding a continuous monitor/controller (such as the 750 Series monitor/controller from Myron) to the wash line.
But, I have a few questions regarding what the general practice is for those using a water wash daily.

1) What monitor/controller is most used/recommended?
2) What limit do you use for PPM? 5? 10?
3) Do you also have a chart recorder on your monitor?
4) Would you recommend monitoring all three tanks, or just the wash?

Thanks,

John 

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