CHMLAB® Ashless Qualitative Analysis Filter Paper, Made of Refined Pulp & Pure Cotton Linters Disc- & Sheet-type, Φ25~320mm & 580×580mm, Ash Content＜0.06%Ideal for Qualitative Analysis, General Filtration, Batch Traceable, 무회 정성여과지, 분석용 (DH24CAT00001319)