pH 计检定仪期间核查方法
贾会,许建军,吴佳益,赵芳芳
(河南省计量科学研究院,郑州 450000)
Intermediate check methods of verificating meter for pH meters
贾会,许建军,吴佳益,赵芳芳
(Henan Province Institute of Metrology, Zhengzhou 450000, China)
摘要:介绍pH 计检定仪的4 种期间核查方法:传递比较法、多台对比法、留样测量法、实验室间比对法。传递比
较法能直接反应pH 计检定仪的变化,适用于已建立pH 计检定仪检定装置的单位;多台对比法与留样测量法方便、
快捷,可操作性强,适合大多数单位进行pH 计检定仪的期间核查;实验室间比对法对设备要求较低,但需要协调的
单位较多,周期较长,费用较高,实用性差。
Abstract:Four intermediate check methods applied to verificating meter for pH meters were introduced such as
transfer comparison method, multi-set comparison method, sample retention measurement method and inter-laboratory
comparison method. The transfer comparison method can directly reflect the change of verificating meter for pH meters
and it is suitable for the units where verification device of verification meter for pH metesrs has been established; multi-set
comparison method and sample retention measurement method are convenient, fast and practicable, and the methods are
used for the intermediate check of verificating meter for pH meters in most units; the inter-laboratory comparison method
has low equipment requirements, a few units are needed to cooperate with each other, several months have to be tooken and
higher cost must be needed, and then it is not practical.
关键词:pH 计检定仪;酸度计;期间核查;期间核查标准;数字多用表
Keywords:verificating meter for pH meters; pH meters; intermediate check; intermediate check standard; digital multimeter
基金:河南省科技攻关项目(182102311050)
本文引用格式:
贾会,许建军,吴佳益,等.pH 计检定仪期间核查方法[J]. 化学分析计量,2020,29(1):108-111. JIA H,XU J J,WU J Y,et al. Intermediate check methods for verificating meter for pH meters[J]. Chemical analysis and meterage,2020,29(1):108-111.
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