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- Fastbuds Chemdawg
No it has a calibrate button but no screw.Is there no calibration screw on the Vivosun?
Yea its a bummer. But I got an Apera now so I will survive!No it has a calibrate button but no screw.
There is EC calibration fluid available pretty cheap on amazon. HM digital make one for their EC pens.
Amazon product