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Table 1 Comparison of Laboratory and Field Kit Results for 795 Wells Tested by Village Testers

From: Impact on arsenic exposure of a growing proportion of untested wells in Bangladesh

ICP-MS As Results ≤ 10 μg/L 10-50 μg/L 50-100 μg/L > 100 μg/L
N 198 292 166 139
Field Kit Incorrect Relative to 10 μg/L 43 9 0 1
Field Kit Incorrect Relative to 50 μg/L 2 161 2 2