Reproducibility tests were also conducted, and the relative standard deviations were 0.011 mg/L for Pb, 0.013 mg/L for Cd, 0.016 mg/L for Ni, 0.014 mg/L for As, and 0.008 mg/L for Cu
These strips can detect the presence of fentanyl in the drug, helping to prevent accidental overdoses
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They begin by testing the leathers reaction to steam in an inconspicuous area
Arsenic and cadmium: Heavy metals that are harmful to soil organisms and plants
PLEASE NOTE: These are past their best before date, however they are still safe to use