I sent an E-mail to Taylor Technologies about creating a drop-based test kit for borates (ppm Boron). They said that they have just introduced a kit for testing Boron, but it is designed for industrial water as one drop measures 0.2 or 0.5 ppm (similar to their FAS-DPD chlorine test). I don't see this on their website yet, but it could still be useful if one were to do a 10:1 dilution and use the 0.5 test (to get within 5 ppm). It sounds like the ProTeam strips (or the ones from LaMotte) are still the way to go since they are close enough for accuracy and very easy to use.

Richard