... ; Recyclable cylinder 400L, 800L, 926L, 1000L; ISO-Tank. Quality standard : Purity, %≥99.8Moisture, PPm≤10Acidity, PPm≤0.1Vapor Residue, PPm≤100AppearanceColorless ... :Mix order are welcome, 20pcs min order,1150 cylinder wholesale high purity r12 refrigerant gas