Hello, I am accrediting the acute toxicity assay with Daphnia magna ISO 6341; may you suggest how to express the measurement uncertainty with the confidence interval?
From your question, I am assuming that you have already calculated Uncertainty, if you have already calculated the measurement of uncertainty; add uncertainty column with heading Uncertainty @ 95% CI (Confidence Interval) in report and just mention the calculated uncertainty in front of relevant test results.
Also add disclaimer in footer of report that Lab is reporting results @ K=2, 95% Confidence Interval.