Recommended Use
This product is intended to confirm the accuracy of an instrument and /or procedure for an analytical method. Samples should be prepared and thermally conditioned in accordance with the relevant standard before use. The shelf life of this product is guaranteed until the expiry date, provided the bottle is unopened and stored at +5℃ to +25℃. The guarantee is void if the bottle seal is broken. No minimum volume is required to guarantee homogeneity.
Inter-laboratory Studies
The certified values and tolerances quoted for distillation are derived from inter-laboratory studies involving a statistically significant number of laboratories. The competence of the laboratories involved in the studies was assured by only using laboratories accredited to ISO 17025 for the tests concerned by the appropriate national body and the data was evaluated with reference to the precision data quoted in ASTM D86-16a.
Uncertainties
The uncertainty quoted for each test is calculated at a level of confidence of approximately 95%. When using this material to evaluate test procedures and /or instrument performance, the results obtained should be compared to the certified value with reference to the test reproducibility or other calculated protocols relevant to the test method employed.
