Rick W in Texas asked about fireproofing cotton a little while ago.The Fire Service here gave me this recipe once (so I can't vouch for its health implications or its effects on collection items),but here goes: 85 gms boric acid 198 gms borax (sodium tetraborate) 2 litres of water mix well and soak articles or 425 gms boric acid 283 gms sodium phosphate 4.5 l water mix well and paint on. .....I hope that's still relevant.Cheers .Kate Roberts. [log in to unmask]