HG/T 5694\uff5e5697-2020
T/SDSCCE 044-2022
HG/T 3463-2000
Chemical reagent Arsenazo Ⅲ
ASTM E326-96
Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification (Withdrawn 2001)
UNE 34210:1981
SODIUM CHLORIDE. DETERMINATION OF FLUORIDE CONTENT. PHOTOMETRIC METHOD WITH SODIUM 2-(SULFOPHENYLAZO)-1,8 DIHYDROXYNAPHTHALENE-3,6 DISULFONATE (SPADNS).
32011R0207