Advantec-MFS - Model Grade No.3 -Quantitative/Hardened Ashless Filter Papers

Made of 100% cotton linter cellulose, Ash Content: 0.01%(Except No.4A 0.025%), Acid washed: Double acid washed in hydrochloric then hydrofluoric acid (No. 3, 5A, 5B, 5C, 6, 7), then rinsed with ultrapure water to neutralize. No. 4A is further treated with nitric acid before washing.