Uncertain degree is evaluated to adopt EDTA titrimetric law to measure total hardness of water quality.

采用EDTA滴定法测定水质总硬度的测量不确定度评定.

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Therefore , this method can be applied into the determination of the total hardness of water.

此方法可用于测定清洁水的总硬度.

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For measuring the basicity , calcium stiffness and total hardness, a new successively titrating way is recommended.

为工业循环冷却水中碱度 、 钙硬和总硬度的测定推荐了一种连续滴定的新方法.

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