Tuttnauer 3840 - Page 19

Page 17 of 110 Pages
Physical Characteristics and Maximum acceptable
contaminants levels in steam for sterilizers
(According to EN 13060:2004).
Element
Condensate – allowable
content
Silicium oxide. SiO
2
≤0.1 mg/kg
Iron
≤0.1 mg/kg
Cadmium
≤0.005 mg/kg
Lead
≤ 0.05 mg/kg
Rest of metals except iron,
cadmium, lead
≤0.1 mg/kg
Chloride (Cl)
≤0.1 mg/kg
Phosphate (P
2
O
5
)
≤0.1 mg/kg
Conductivity (at 20°C)
≤3 μs/cm
pH value (degree of acidity)
5 to 7
Appearance
Colourless clean
without sediment
Hardness (Σ Ions of alkaline earth)
≤0.02 mmol/l
Compliance with the above data should be tested in accordance
with acknowledged analytical methods, by an authorized
laboratory.
Attention:
We recommend testing the water quality once a month. The use of water
for autoclaves that does not comply with the table above may have severe
impact on the working life of the sterilizer and can invalidate the
manufacturer’s guarantee.
3.11.2 Drain Cooling
The feed water supplied to the drain cooling must meet the
following requirements:
 Hardness: 0.7 - 0.2 mmol/l.
 Water temperature shall not exceed 15°C (59°F).
3.11.3 Reverse Osmosis
A Reverse Osmosis (RO) system may be used to improve the
quality of the water used to generate steam in the autoclave
chamber.
In RO, the water is forced through a semi-penetrable membrane,
which filters out contaminants to a high degree of efficiency. In
deionisation (DI) ions and charged particles are removed either
by electric fields or by ion exchange in resin beds.