HI3874 / HANNA ชุดทดสอบสารเคมีไนเตรต Nitrate Chemical Test Kit The HI3874 is a colorimetric chemical test kit that determines the nitrate concentration in samples within a 0 to 50 mg/L (ppm) range as nitrate-nitrogen ...
HI3873 / HANNA ชุดทดสอบสารเคมีไนเตรท Nitrite Chemical Test Kit The HI3873 is a colorimetric chemical test kit that determines the nitrite concentration in samples within a 0.0 to 1.0 mg/L (ppm) range as nitrite-nitrogen ...
HI38017 / HANNA ชุดทดสอบคลอรีน Free and Total Chlorine Test Kit The HI38017 is a chemical test kit that determines the free and total chlorine concentration in two ranges: 0 to 0.7 mg/L and 0 to 3.5 mg/L.