
SODIUM METABISULPHITE
| Sodium Metabisulphite Wt., % | 29.1 min. |
| S.G. at 20°C | 1.25 ±0.05 |
| pH | 4.0 - 4.5 |
| Sodium Sulphite Wt., % | 0.6 max. |
| Sodium Sulphate Wt., % | 0.3 max. |
| Sulphur Dioxide Wt., % | 19.5 min. |
| Chloride, % | 0.0015 max. |
| Iron as Fe, % | 0.0009 max. |
| Heavy Metals (Pb), ppm | 6.05 max. |
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