OK so I have a hanna ph pen that i have been using and a shitty ppm meter that stopped working so I decided to upgrade. I picked up the electric hanna combo gro check meter.
so i calibrate it in and try her out and it shows that my old ph meter is off by a point. So I calibrate it with some 7.01 and try it out and its still gives me the 6.10. I then recal the gro check with the 7.01 and the same thing,5.2.. both meters show they are calibrated but there is a point difference.The new gro check is bouncing the numbers up and down by about .5 in the res but when i calibrate it theres no bounce..
anyone with an idea? user error perhaps being im a newb ?
so i calibrate it in and try her out and it shows that my old ph meter is off by a point. So I calibrate it with some 7.01 and try it out and its still gives me the 6.10. I then recal the gro check with the 7.01 and the same thing,5.2.. both meters show they are calibrated but there is a point difference.The new gro check is bouncing the numbers up and down by about .5 in the res but when i calibrate it theres no bounce..
anyone with an idea? user error perhaps being im a newb ?