Dear Sir/Madam,This is MoonStar from IN.I'm looking for products with the following specifications:QQ : 2773374937Portable Dissolved Hydrogen (H2) Meter (ENH-1000)Specifications:Measuring Object: Dissolved hydrogen in the dissolvedMeasurement System: Hydrogen reduction SystemMeasurement range: 0~2.00ppm / 0~2000ppbMargin for error: ±10%Unit: 0.001ppm/1ppb Show More