Tuttnauer ELARA - Water Quality Requirements

Page 12 of 56
3.10. Water Quality
Physical characteristics and contaminants levels
The distilled or mineral – free water supplied to the autoclave should
have the physical characteristics and maximum acceptable level of
contaminants indicated in the table below:
Physical Characteristics and Maximum acceptable contaminants
levels in water or steam, for steam generator and sterlizers
(According to EN 285:2006).
Contami
nants in water
supplied to
generator
1.1.1.2 Contamin
ants in
condensate
at steam
inlet to
chamber
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
≤
0.005 mg/l
Lead
1
≤ 0.05
mg/l
2
≤ 0.05
mg/l
Rest of heavy metals except
iron, cadmium, lead
3
≤ 0.1
mg/l
4
≤ 0.1
mg/l
Chloride (Cl)
5
≤ 2
mg/l
6
≤ 2
mg/l
Phosphate (P
2
O
5
)
7
≤ 0.5
mg/l
8
≤ 0.5
mg/l
Conductivity (at 25°C)
9
≤ 15
µs/cm
0
≤ 3
µs/cm
pH value (degree of acidity)
1
5 to
7.5
2
5 to 7
Hardness (Σ ions of alkaline
earth)
3
≤ 0.02
mmol/l
4
≤ 0.02
mmol/l
Appearance
5
Colourless, clean, without
sediments
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.