Tester 50waterproof Pocket Orptestr Easy , Each

Details:

Orp testr* 50 waterproof pocket orp tester^ orp testr* 50 waterproof pocket orp tester, premium 50 series, display: lcd, calibration: /-200 mv offset adjustment, mv resolution: 1 mv, mv accuracy: /-2 mv, temperature: 0-60c, includes: protective plastic storage case, lanyard, battery: four aaa 1.5V