Sterilization by hydrolysis
134° C - 18 minutes / (Circular DGS / DH n° 100, dated from December 12th, 1995)
Whatever is the vapour production system, the quality of water used for it shall be controlled and regularly analyzed
this water shall be :
• drinkable, filtered in each case,
• its hardness shall not exceed 5 to 7° TH (1° TH = 10 mgr calcium carbonate / L of water),
• completely devoid of chlorine elements and of chlorides :
———> < 2 mgr/litre, - content in phosphate lower then 0,5 mgr/L, and an almost null content in minerals :
———> Silica : < 1 mg/l,
———> Iron : < 0.2 mg/l,
———> Cadmium : < 0.005 mg/l,
———> Lead : < 0.05 mg/l,
———> Heavy metals excepted lead, iron, cadmium : < 0,1 mg/l.
This water shall content: :
• no tanates,
• no sulfites,
• no amines,
• no hydrazine,
• no chlorides,
• no permovapoline,
Products oftenly used by heating engineers to prevent corrosion or to remedy to sedimentations in the piping.
Those products are very corrosive to surgical instrumentation, as well as to the autoclave.