JJ Posted June 21, 2006 Share Posted June 21, 2006 Some help and guidance please.Which is the best and most reliable testing method for free chlorine.I have tried them all, the dip strips, the liquid drop test, and the DTP tablet, and guess what, they all give different results.So please, which is the most reliable? Link to comment Share on other sites More sharing options...
Baz Posted June 21, 2006 Share Posted June 21, 2006 I only ever use the DPD tablets for Chlorine and Phenol Red tablets for pH Test as they are the best and the most accurate. I am sure Poolguy (Andrew) will respond when he has time, but every professional pool person has always told me only ever to use the tablets. I believe I was told that the liquid drops have a short shelf live and are not accurate.Baz Link to comment Share on other sites More sharing options...
Poolguy Posted June 22, 2006 Share Posted June 22, 2006 I agree with BazDPD1 tablets for Chlorphenol Red tablets for pHCyanuric acid tabs a must for those dosing manually, as it measures Stabiliser.You can get them in L'Ecleric, or Castorama, and sometimes in GammVert.Or if you fail completely then send me a PM and I'll send you some.The reagent liquid does have a short life and surprisingly itsmeasurement is of no interest because it measures Total chlorine,including the chlorine 'locked' by Stabliser (cynuric acid).The Tabs strips I have found to of limited use and not very accurate.I cannot emphasies enough the importance of regular and accuratetesting, If you don't, the risk you run of a bad pool is is a nearcertainty.Andrew Link to comment Share on other sites More sharing options...
JJ Posted June 22, 2006 Author Share Posted June 22, 2006 Baz and Andrew,Many thanks for that guys, I have a feeling that Andrew did tell me before to only use the DPD tablets. Link to comment Share on other sites More sharing options...
Poolguy Posted June 22, 2006 Share Posted June 22, 2006 JJI thought I left you som DPD1 last time I visited... If not I drop some in next week.Andrew Link to comment Share on other sites More sharing options...
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