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Member #415219

Member Since: March 4, 2013

Country: United States

  • PROBLEM CALIBRATE ! work with two stamps on arduino 2560 mega . all works fine -- but problem to calibrate to 10 ! no problem calibrate to Ph 7 - no problem calibrate to Ph4 but if i want to calibrate to Ph 10 it does not work :( the stamp gave me always a PH 7 back !! ?? I cant masure above Ph 7. Any idea why ??

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