What is the best option to test borates?

[jlyfshhh]

I just added 30lbs of boric acid today to get to 47ppm. What does everyone use to test their borates?

 

[ajw22]

Borates Test Strips

tftestkits.net

 

[Mdragger88]

I use the Taylor strips too.
I only test once - at the beginning of the season after my ph & ta are on point, then I add enough to get to 50ppm & let it ride.

 

[jlyfshhh]

Thanks!