Thank you Adam this is very useful  - can you explain briefly the significance of the LoD, Loq and NELP would have on the results- i already repeated the arsenic test on the first sample within 20mins of the first result - it gave the same mg/L as the first one, 2 days later i went to the field and did the test in-situ as well as recorded the temp of the water to make sure it was within the range the manufactures of the portable test kit recommended and it was- and got the same results as the first test, then 10 days later a rd sample was taken and tested the next day, again recording the temp of the water - all 4 test came back with the same results

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Thank you Adam this is very useful  - can you explain briefly the significance of the LoD, Loq and NELP would have on the results- i already repeated the arsenic test on the first sample within 20mins of the first result - it gave the same mg/L as the first one, 2 days later i went to the field and did the test in-situ as well as recorded the temp of the water to make sure it was within the range the manufactures of the portable test kit recommended and it was- and got the same results as the first test, then 10 days later a rd sample was taken and tested the next day, again recording the temp of the water - all 4 test came back with the same results