For peope who feel confident in their testing and want more flexibility, Taylor has alternate instructions for the FAS-DPD chlorine, total alkalinity, and calcium tests that measure in different increments. The TF Test Kit, which is based on the Taylor chemistry, doesn't come with the alternate directions so I thought I would post them here.
For the FAS-DPD free and combined chlorine test you can use a 25 mL water sample, instead of the usual 10 mL sample. When you do this each drop of R-0871 then counts as 0.2 ppm, instead of the usual 0.5 ppm. This is handy if you want more accurate results, but it uses more titrant and can get tedious.
For the Total Alkalinity test you can use a 10 mL sample, 1 drop of R-0007, 3 drops of R-0008, and each drop of R-0009 then counts as 25 ppm. This is handy if your alkalinity is very high, plus it saves on reagents.
For the Calcium Hardness test you can use a 10 mL sample, 10 drops of R-0010, 3 drops of R-0011L, and each drop of R-0012 then counts as 25 ppm. This is handy if your hardness is somewhat high, plus it saves on reagents.
It is also possible to save on CYA reagent by using the CYA mixing bottle and view tube from a WalMart HTH 6 way kit with the reagent from the TF Test Kit. This will only measure down to 30, instead of 20 using the TF Test Kit components, and it is a narrower tube that is more difficult to look into. But it allows you to do about twice as many tests with the supplied reagent.