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【单选题】
以下对酸度计的使用，描述错误的是：
A.
酸度计使用前应用缓冲溶液进行校准
B.
在酸度计的测定过程中，每测完一个样品，都需要重新校准后方能继续使用。
C.
酸度计在进行不同醋酸溶液的测定时，应按照浓度由低到高的顺序依次测定。
D.
酸度计使用结束应冲洗干净，电极应保存在饱和氯化钾溶液中。
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