| Contaminant |
Parameter |
Tap |
Soft |
Distilled water |
Pure Water |
| water |
water |
system 1 |
system 2 |
system 3 |
Brand 1 |
Brand 2 |
| Ions |
Resistivity at 25°C [MΩ·cm] |
0.001 |
- |
0.2 |
18 |
18 |
18 |
18 |
18 |
| Conductivity at 25°C [μS·cm−1] |
1186 |
290 |
5.6 |
- |
- |
- |
- |
- |
| Acidity/Alkalinity |
pH at 25°C |
7.0-7.5 |
5.5-6.0 |
4.5-5.0 |
4.6-5.0 |
4.5-5.0 |
4.6-5.0 |
4.4-5.0 |
5.5-8.0 |
| Organics |
Total Organic
Carbon/p.p.b.(μg/L) |
3500 |
- |
- |
- |
- |
- |
≤5 |
<2 |
| Impurities |
Residue (%) |
- |
- |
- |
- |
- |
- |
<0.0001 |
<0.00005 |
| Estrogenic activity |
BPA [ng/mL] |
<LOQ |
<LOQ |
<LOQ |
0.014±0.003 |
0.242±0.022 |
0.473±0.050 |
0.027±0.006 |
0.008±0.002 |
|
