How you take loss on drying of reference standards?

To assess loss during the drying of reference standards, I would first weigh the sample before drying to establish a baseline mass. After drying, I would weigh the sample again to determine the mass loss. This difference can then be calculated as a percentage of the initial weight to quantify the loss. Additionally, I would ensure to document the conditions and duration of drying to maintain consistency and reproducibility in future assessments.