Easy to read color blocks at 10, 50, 100, 250, and 500ppm.
Rapid test only taking 15 seconds to test a solution
No need for field kit or reagents to conduct tests
Desiccant vial with flip-top lid preserves freshness of strips
Recommended for lemon juice or on potatoes, shellfish or dried fruit. Not recommended for red wine or people that are sulfite sensitive testing for allergens