Textiles produced using BASF sulfites as reducing agents are now proven to be responsibly manufactured. This is because the sulfites sodium sulfite anhydrous A and sodium metabisulfite (both non-food grade) have been awarded the ZDHC Confidence Level 3 V3.1 certificate. This means that the BASF sulfite plant in Ludwigshafen is now included in the ZDHC's MRSL (Manufacturing Restricted Substances List).
The same applies to our Hydrosulfites from Ludwigshafen
The following Sulfites are ZDHC certified: sodium sulfite anhydrous A and sodium metabisulfite (both non food grade)