got my 6.86 solution in. it came in 25 29ml packs, which i like more than the bottles of ph, seems to get more uses per dollar

at first i thought i was havin a problem cause the 7.01 solution i had was reading 7.3, so i emailed the company and they told me to email them the reading of everything after using the 6.86 solution, and the 6.86 and the 4.01 read correctly. so we are thinking the 7.01 solution could be off

i calibrated everything and so far seems to be working fast and accuratly, and also checked with the liquid test drops too