| ARTICOLO | STANDARD | STANDARD | STANDARD II | STANDARD III | STANDARD | STANDARD |
| Fe | 10 ppm max | 20 ppm max | 30 ppm max | 80 ppm max | 150 ppm max | 1500 ppm max |
| Na2S | 60%min | 60% min | 60% min | 60% min | 60% min | 60% min |
| Insolubili in acqua | 0.03% max | 0.10% max | 0.18% max | 0.20% max | 0.30% max | 0.40% max |
| Na2C03 | 1.80% max | 1.80% max | 1.80% max | 2.00% max | 3.00% max | 5.00% max |
| Na2S03 | 1.00% max | 1.80% max | 1.80% max | 2.00% max | 2.00% max | 2.00% max |
| Na2S2O3 | 2.00% max | 2.00% max | 2.00% max | 2.00% max | 2.00% max | 2.00% max |
| Colore | Giallo | ROSSO | ||||
| Pacchetto | Quantità (senza pallet) 20 ' GP | Quantità (con pallet) 20'GP |
| Sacchetto da 25 kg | 25 MT | 20 MT |
| sacchetto da 1000 kg | 20 MT | 18 MT |