Common product market at present, most of the hydrofluoric acid concentration is 40% and 55%, in recent years, with low content of the product on the market, such as 30% content of hydrofluoric acid (mainly for the etched glass, metal and metal surface treatment) demand increase gradually, the main reason is that before the user before using high levels of product will be diluted, buy relatively high concentration products can reduce transportation costs. Due to the toxicity of hydrofluoric acid and the corrosive in use process to human body harm is more and more attention. User requirements raw material supply enterprises supply more suitable for use of product, so the revised standards include 30% in Ⅱ type product specifications. Set about 70% concentration of hydrofluoric acid specifications, mainly consider the transportation of export products, the increase of the concentration of the product transportation cost is relatively lower. So the standard 70% in Ⅰ type products including specifications.

This revision is not equivalent with the Japanese standards, but with the Japanese standards in terms of key indicators project Settings, same standard were set up four indexes in the project: hydrofluoric acid, fluosilicate, non-volatile acid (sulfuric acid) and burning residue content.

Japan in the standard of index parameter setting can be divided into two types, the main difference between the two types respectively in fluorosilicic acid content and sulphuric acid content, and two types of these two indicators requirements vary widely. The reason of no clear difference in standard from Japan, according to our country to this product use the analysis judgment, the reasons shall be the two products use different and different demands. Based on the above analysis, in addition to this the revised standard according to the purpose of the product is divided into two major categories, each category according to the actual usage, divided into different types according to hydrofluoric acid concentration, with the use of fully meet user requirements.