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$792.00
SE
TONGAO TR-701H Water Quality Nitrate Nitrogen Tester
nitrate nitrogen0~10Mg/L (measured in sections)
Detection of nitrate nitrogen content, the range is 0.5mg/L-10mg/L (measured in sections), no digestion is required, the detection time is 10 to 15 minutes, and the digestion Colorimetric integrated detection is used, which conforms to the standard of "Water Quality, Chromotropic Acid Spectrophotometry".
$525.00
SE
LEICI DGB-423 Optoelectronic Colorimetry Water Quality Analyzer Ammonia Nitrogen
ammonia nitrogen0.000~4.000
Measurement method Noll reagent method, light source wavelength 420nm, Measurement range 0.000~4.000, error of indication ≤ +/- 10%, Repeatability ≤ 3%,
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