The body is made from corrosion-resistant 316L stainless steel with both walls electrolytically ground and mirror polished, leaving no microscopic pits or gaps on the inner wall. This effectively reduces photoresist and electronic cleaning solvent clinging and residue, preventing metal ion leaching from contaminating high-purity media. An integrated side handle aids manual transfer, and the small sealed opening blocks light and external dust. Stable temperature and pressure characteristics suit cleanroom conditions. The capacity matches routine pilot-line batch usage, easily avoiding cross-contamination between reagent batches.