Page 15 of 56 Pages
2.10
Water Quality
The distilled or mineral-free water supply shall be according to the table below:
Physical Characteristics and Maximum acceptable contaminants levels in water or
steam, for steam generator and sterilizers
(According to EN 285:2006).
Contaminants in
water supplied to
generator
Contaminants in
condensate at steam
inlet to sterilizer
Evaporate residue
≤ 10 mg/l
N/A
Silicate (SiO
2
)
≤ 1 mg/l
≤ 0.1 mg/l
Iron
≤ 0.2mg/l
≤ 0.1mg/l
Cadmium
≤ 0.005 mg/l
≤ 0.005 mg/l
Lead
≤ 0.05 mg/l
≤ 0.05 mg/l
Rest of heavy metals
except iron, cadmium,
lead
≤ 0.1 mg/l
≤ 0.1 mg/l
Chloride (Cl)
≤ 2 mg/l
≤ 0.1 mg/l
Phosphate (P
2
O
5
)
≤ 0.5 mg/l
≤ 0.1 mg/l
Conductivity (at 25°C)
≤ 5 µs/cm
≤ 3 µs/cm
pH value (degree of
acidity)
5 to 7.5
5 to 7
Hardness (Σ ions of
alkaline earth)
≤ 0.02 mmol/l
≤ 0.02 mmol/l
Appearance
Colorless, clean, without sediments
Compliance with the above data should be tested in accordance with acknowledged
analytical methods, by an authorized laboratory.
Attention:
The use of water for autoclaves that do not comply with the table above may have severe
impact on the working life of the sterilize
r and can invalidate the manufacturer’s
guarantee.
Tap Water supply
Maximum hardness value 0.7-2.0 mmol/l
Caution: The use of soft water is strictly forbidden!
Please consult a water specialist!
