4ml/30K超滤管(外管15ml)
4ml/30K超滤管(外管15ml)High recovery Ultracel regenerated cellulose membrane in a range of molecular weight cut-offs
4ml/50K超滤管(外管15ml)
4ml/50K超滤管(外管15ml)High recovery Ultracel regenerated cellulose membrane in a range of molecular weight cut-offs