NF P75-415*NF EN 13468:2002 建筑设备和工业设施用隔热制品 水溶性氯化物、氟化物、硅酸盐、钠离子和pH值的微量测定
Thermal insulating products for building equipment and industrial installations - Determination of trace quantities of water soluble chloride, fluoride, silicate, and sodium ions and pH