Need Help Please - just got my taylor 2006 testing kit...

[waterbear]

NOT quite right, DurhamHouses.
The first titration give you free chlorine, NOT total chlorine. After you add the R-0003 and titrate again you have the combined chlorine. The FAS-DPD test does not test total chlorine at all. If you want total chlorine just add the free chlorine and the combined chlorine.

You are confusing FAS-DPD titration testing (used in the K-2006) with DPD (color matching) testing that is found in the K-2005 and other test kits. DPD tests Free Chlorine and Total Chlorine and you must subtact the Free Chlroine from the Total chlorine to get the combined chloirne. FAS-DPD directly tests for combined chlorine, DPD does not.

If you have been subtracting the second reading from the first with an FAD-DPD test then you are not getting the correct number for FC if there is any combined chlorine present!.