The SenSafe Water Metals Check test is a quick, accurate, inexpensive way to determine toxic metal levels in tap water. This patented test strip develops red in the presence of toxic metals above 10 ppb in only two minutes. It detects toxic +2 valence metals found in tap water. Because of its detection sensitivity, it confirms the need for water filtration or remediation. The test can be purchased for $19.99 for 50 tests or $5.99 for six tests with instructions and a color chart.