PH 值测定法检验操作中的碱误差是在测定高pH值的供试品时，由于普通玻璃电极对Na+也有响应。使测得的H+活度高于真实值，即pH读数低于真实值，产生负误差。若使用锂玻璃电极，可克服碱误差的影响。
研制的涤纶碱减量自动测控装置可以测定不同结构的涤纶织物的减量率，测量误差小于1%。
This device can be applied to measure the alkali weight reduction of various polyester fabrics including cationic dyeable polyester. The analysis deviation is below 1%.
采用高氯酸非水滴定法分析废碱液中的甲酸钠，代替了误差较大的高锰酸钾法。
Sodium formate from waste alkali liquor was analyzed by perchloric acid nonaqueous titration instead of potassium permanganate method, which caused larger deviation.
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