Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Aqueous solution | Daylight | Dark |
|---|---|---|
| Ultrapure water | 1.5 ± 0.1% | 1.9 ± 0.5% |
| Freshwater | 97.6 ± 8.8% | 92.4 ± 3.4% |
| Seawater | 94.3 ± 7.6% | 88.2 ± 2.3% |
