Cobalt Chloride Indicator Paper, 10 books of 20 strips
Graduations : Relative Humidity in Air < 2% – Blue | Relative Humidity in Air > 2% – Pink
| Relative Humidity in Air < 2% – Blue | Relative Humidity in Air > 2% – Pink |
Cobalt Chloride Indicator Paper, 10 books of 20 strips
Graduations : Relative Humidity in Air < 2% – Blue | Relative Humidity in Air > 2% – Pink