The 20L standard drum is uniformly electropolished inside and out, giving a smooth, easy-to-clean surface that resists media retention and cross-contamination. The wide-open flange on top makes assembly and disassembly convenient, and integrated side lifting holes aid manual handling and transfer. With stable pressure and temperature performance, it suits general electronic reagents and clean chemical liquids without complex piping. Balancing cost and cleanliness standards, it is suited to frequent dispensing and material transfer in laboratories and small production lines.