any FAS-DPD titration test such as Taylor K-2006 or Ben's ps234 will do it. If you are using a DPD colormetric test (match up the colors) you can dilute the sample and multiply the reading by the dilution factor.
Re: test kits
any FAS-DPD titration test such as Taylor K-2006 or Ben's ps234 will do it. If you are using a DPD colormetric test (match up the colors) you can dilute the sample and multiply the reading by the dilution factor.
Retired pool store and commercial pool maintenance guy.
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