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Meter Tester Water Quality Test LCD Backlight Portable Orp Redox Meter

$22.80
Oxidation reduction potential(ORP) is a process by which a molecule or ion loses or gains electrons. This occurs most readily

MS8229 Auto Range Digital Multimeter Temperature Humidity Light Lux Sound Level Meter Tester

$55.71
  The¬†luminance¬†function is applicable to measuring field luminance with full cosine correction for angular incidence of light. Auto range and