pluto420
Active Member
I just got a control wizard tri meter.
http://www.cwpmeters.com/proddetail.php?prod=CW511
I am sure I am just doing something wrong but I can't get ph calibrated to save my life.
I put the ph meter in ph 7 solution and it reads 9.20. I try to adjust the screws but they dont turn far either direction and I can get the reading down to 8.00 or so but never close to 7.
I then put the meter in ph 4 and it goes to 6.30. Same issue I can turn the screws to get to around 5.20 or so but never close to 4.
The manual says if you cant get it calibrated to turn the screws as far as they will go clockwise and the 1/2 back counter clockwise to reset the screws. That doesnt seem to be helping.
Any help will be really appreciated.
http://www.cwpmeters.com/proddetail.php?prod=CW511
I am sure I am just doing something wrong but I can't get ph calibrated to save my life.
I put the ph meter in ph 7 solution and it reads 9.20. I try to adjust the screws but they dont turn far either direction and I can get the reading down to 8.00 or so but never close to 7.
I then put the meter in ph 4 and it goes to 6.30. Same issue I can turn the screws to get to around 5.20 or so but never close to 4.
The manual says if you cant get it calibrated to turn the screws as far as they will go clockwise and the 1/2 back counter clockwise to reset the screws. That doesnt seem to be helping.
Any help will be really appreciated.
