| Standard ID | DL 425.2-1991 (DL425.2-1991) |
| Description (Translated English) | Determination of sodium hydroxide and sodium carbonate content in industrial sodium hydroxide - Titrimetry |
| Sector / Industry | Electricity & Power Industry Standard |
| Classification of Chinese Standard | G11 |
| Date of Issue | 1991/10/4 |
| Date of Implementation | 1992/4/1 |