... subsitute for R22 & R502. 3.Good quality with competitive price. R410a 1.Steady purity. 2.Used as subsitute for R22 & R502 ... .8Moisture %≤0.001Acidity(as HCl ), % ≤0.0001Evaporation residue, %≤0.01R410aRefigerant R410a ,refrigerant gas R410aa mixed refrigerant gas ,and it is a ...