Packaging materials removed prior to use and materials used for identification only need not be included in the inventory
Average or typical percentages or percent by weight ranges may be included with an explanation of how this was derived in the “Other Materials Notes”
Percentage weight ranges for substances or materials should not exceed 20% without an explanation in the notes
Notes are required for “Undisclosed” materials and substances
Best Practices: Residuals & Impurities
Have they been considered?
How was this determined?
Are the proper notes added?
Whether considered or not considered is indicated, an explanation must be provided. Use the Residuals and Impurities Notes for related information.
Example
Summary Materials or Product Notes
Rationale for nondisclosure of a Material Name in a Nested Materials Inventory
Explanation for ranges, alternates, and undisclosed material percentage
Explanation why “Other” is indicated in Inventory Threshold
When inventory data for substances in a single material are obtained at multiple threshold levels in a Nested Inventory or a product in a Basic Inventory
Variations among different products in a single HPD
All of these pieces are required, if applicable to the specific HPD. If not applicable, no notes are needed.
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