just got myself this pen and need to know if i really need to purchase ph10 buffer solution
purchased 4 and 7 2day r these pens 2point calabration or 3 point ive read most are 2 point ie 4-7 solution to calabrate
hope u understand what im getting at lol
thanks for replys
only ever used test kits so this is new to me
purchased 4 and 7 2day r these pens 2point calabration or 3 point ive read most are 2 point ie 4-7 solution to calabrate
hope u understand what im getting at lol
thanks for replys
only ever used test kits so this is new to me