84
The use of water with a conductivity greater than 15µS/cm may affect the sterilization process and damage the sterilizer.
The use of water with a conductivity greater than 50µS/cm, or not complying with the specifications in the table above, may strongly affect
the sterilization process and seriously damage the sterilizer.
The manufacturer’s warranty is void if the sterilizer was used with water containing contaminant or chemical levels exceeding
those listed in the table above.
FEED WATER SPECIFICATIONS
Contaminants/minerals/qualities
Value/Specification
Evaporate residue
< 10 mg/l
Silicon oxide, SiO
2
< 1 mg/l
Iron
< 0,2 mg/l
Cadmium
< 0,005 mg/l
Lead
< 0,05 mg/l
Heavy metals (excl. iron, cadmium, lead)
< 0,1 mg/l
Chloride
< 2 mg/l
Phosphate
< 0,5 mg/l
Conductivity (at 20
°
C)
< 15 µs/cm
pH value
5 - 7
Appearance
colorless, clean, free from sediment
Hardness
< 0,02 mmol/l
Chemical additives
No chemicals or additives must be added to the water used for the steam sterilization process, even if
they are specifically claimed for use in steam generators, or for steam production, or as additives for
sterilization, disinfection, cleaning or corrosion protection.
LISA sterilizers use distilled or demineralized water to generate steam for the sterilization process.
The table below lists the maximum content of minerals and the specifications for the water used for steam sterilization (see EN13060 ANNEX C).
ANNEX 7. Water quality
