I tried the Borate drop test today. I had ordered the S-0009 and S-0010 from Amazon to use in conjunction with my Taylor K-2006. So I got to step 3 where you add 5 drops of the S-0009 Bromothymol Blue. The sample should turn yellow. Didn't happen. So then, you continue adding R-0009 drop wise while capping and mixing until you achieve yellow. Never happened. I used 1/4 of a bottle of R-0009 and never achieved yellow. Test discontinued.
Any ideas as to why my sample didn't turn yellow. I used 2 drops of R-0007 in step 1 and 5 drops of R-0009 in step 2 as per instructions.
Appreciate any advice on what I should do differently.