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Neutral derusting

I am looking for help on developing a safe neutral derusting. I currently working with Na Gluconate and Na hexametaphoshate, it appears do be working but very slow any suggestions on speading the process up.
Thanks,

Shane Burke
craft labs chemical manufacturer - Fort Wayne, IN, USA
2005

Safe and neutral derusting agent is thioglycolic acid.You can use 3-30% solution, pH must be corrected with ammonia (25%) ⇦ on eBay or Amazon [affil link] .

Good luck!

Goran Budijar
- Zagreb, Croatia
2005

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