????:1??????:??????????

2????????????

3????????

4???????

5????????

?????????,“???”“????????”???????????????????????????????????????

11?????????????21?,“??”?????????????,???????,11????18??????“??????????????”?????3920%?

??????,??????,????????,2025??,????????????????????????,????????????

???“???”

“???????”?????????

????,??????,????????????????,?????????

??????,????????????????????????,?????????«???????????»???«GB/T8939-2018??????(?)»??,????pH?????????????;?????????????GB15979«???????????»??????????????

«??????»????,??????????????????,???????????????????????????????????

?????????????«GB/T8939-2018?(?????????????????????????)»??????,????????????????????“±4%”????,??,?????????????????????????????????,??????????????,??“???????????????????”?

????????????????pH?????,?4.0~9.0???????????,????????????????,?????????????????????????,pH???4.0~9.0????pH???4.0~8.5,???4.0~7.5??????,???,???pH??

“??????????? ”“????,?????C????????????????????”?????,????????“??????????”?????????,?????????,??????“???????????”???????????????????????

??????????«??????????»,???????????????????

«T/NAHIEM 003-2017??(?????)»???????????????2017????10?????????18??,??“?????????????”?????????????«???»???

11?????21????????,“?”?????????????????,“????”???????????

????????

??????????????????“?????????????”

??«????»???,??,????????????,???????“?????????”?,??????????“?????”????,???????“????????”???,?????????????,?????????????16????1??????????????,?????,???????????,???????????????,???

?????“??????????????????”?????????????,??????????“????????????”,?“???????????”?

11?????22???,???????????,«???????(??)»???“?????????”???“?????”,????“??????????????”?

?????????????,???????,?“?????????????”,??????????,???????????«?????????????????»????????????????????????????????????????????????????????????

???????????,??????????????????????,??,???“???????????”????????????????????????????????2017??????????,??????,??,?“????????????”????????,??????

?????????????????????

??

??????,??????2025??

11????????????21?,“???????????????”??????????,??????????20241954-T-607?????«??????????(???????????????????????)»?????????????????,??2024?6??????????????28??????,?16??????

21?????,??,????“?????????,?,????????????,?,??????????????????”??,????????,?????????,“??????,??????”

????????,2024?????????6?25????????????,????????????????????(??????)????????2024??????????12????,?????????????????GB15979-2024«???????????????????»??GB15979-2002«???????????»,??????????????2025??7???1????????

??,???????,?????,2025??????????,«?(??)»??,??,??????????????????,????????????2025?????,??????????????

????? ? ????????????? ??????:??