Scientists, Plumbers, and homeowners rely on these to test for the presence of unwanted water and gas leaks. These tests come in a variety of forms and sizes, optimized for multiple applications:
Purpose: Precise measurement of the humidity in a room
Application: Used for boaters, professionals in quality assurance, homeowners
Notes: Reaction time can take up to 15 minutes
Application: Gasoline, non-polar solvents
Notes: Can also be used to detect phase separation of ethanol and water vapor in gas streams
Application: Used for drinking water, well water, groundwater, or air
Notes: Detects H2S as low as 3 ppm. Does not require a color chart
Application: Reliable in humid environments
Notes: Does not change color if pH below 5.7