| 
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 | |||