doh i just ordered mine today and some solution but i got the 7.01 too. where did you order the 6.86 calibration. just gotta get some storage soultion and that 6.86 now. went to the only hydro shop on the island today to get some PH up and down along with some grow big and tiger bloom but didnt see any storage solution. maybe ill check it out again tommorrow or maybe ill just call first and save me a trip there.