biggerbud420
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i been using the yellow ph tester for a year i just got the blue one the other day . i got some distilled water and some paper cups that would hold 250ml of water i used the ph solution 4.01 6.86 i can get it calibrated to 4.01 but no matter how many times i try it wont calibrate to 6.86 it will flash 6.86 blink and stop and then will say the ph solution is something like 6.79 and then it will not be calibrated for the 4.01 solution when i calibrate for the 4.01 then it is way off on the 6.86
I HAVE SOME red blue and yellow LIQUID PH SOLUTION 4 ,7 AND 10 i would use for the yellow ph tester i never could get it to calibrate to 7 it would all ways flash 6.86 but i been using the yellow tester anyway
I HAVE SOME red blue and yellow LIQUID PH SOLUTION 4 ,7 AND 10 i would use for the yellow ph tester i never could get it to calibrate to 7 it would all ways flash 6.86 but i been using the yellow tester anyway