Standard No.:	GB 1257-1989
English Name:	Working chemical-Potassium hydrogen phthalate
Chinese Name:	工作基准试剂（容量） 邻苯二甲酸氢钾
Chinese Classification:	G61    Reference reagent
Professional Classification:	GB    National Standard
ICS Classification:	71.040.30 71.040.30    Chemical reagents 71.040.30
Source Content Issued by:	Ministry of Chemical Industry
Issued on:	1989-03-01
Implemented on:	1989-12-1
Status:	superseded
Superseded by:	GB 1257-2007 Working chemical—Potassium hydrogen phthalate
Superseded on:	2008-4-1
Superseding:	GB 1257-1977
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price(USD):	184.0
Delivery:	via email in 1~3 business day

本标准规定了工作基准试剂(容量)邻苯二甲酸氢钾的技术要求、试验方法、检验规则、包装及标志。
本标准适用于含量为99.95%～100.05%工作基准试剂(容量)邻苯二甲酸氢钾的检验。