ELEMENT | STANDARD I | STANDARD II | STANDARD III | STANDARD IV | STANDARD V |
Fe | Max. 10ppm | Max. 30ppm | Max. 50ppm | Max. 150ppm | Max. 1500ppm |
Na2S | 60 % min | 60 % min | 60 % min | 60 % min | 60 % min |
Wasser unlöslichen | Max. 0, 03 % | Max. 0, 18 % | Max. 0, 18 % | Max. 0, 30 % | Max. 0, 40 % |
Na2CO3 | Max. 1, 80 % | Max. 1, 80 % | Max. 1, 80 % | Max. 3, 00 % | Max. 5, 00 % |
Na2SO3 | Max. 1, 00 % | Max. 1, 80 % | Max. 2, 00 % | Max. 2, 00 % | Max. 2, 00 % |
Na2S2O3 | Max. 2, 00 % | Max. 2, 00 % | Max. 2, 00 % | Max. 2, 00 % | Max. 2, 00 % |
Farbe | Gelb | ROT |