114541mm

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Analytical Method: COD Measurement in Waste Water (Rapid-Digestion Method)

Analytical Method COD measurement in wastewater - Photometric determination of chromate consumption subsequent to digestion in 20 min.

分析方法：废水中COD的测量（快速消化法）

分析方法废水中COD的测定 - 消化20分钟后铬酸盐消耗量的光度测定。

Determination of Total Nitrogen in Soil

Soil analysis to determine nitrogen (total) content using Spectroquant® Nitrogen Test Kit and Spectroquant® Prove spectrophotometers by phosphorus molybdenum blue method.

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