Read the method beside the number
Fill power is often expressed in cubic inches per ounce, but units and procedures must always be checked. Conditioning prepares the sample before measurement and can affect the result. The same nominal number from different protocols may not be a fair comparison.
Compression during transport and storage can influence an unconditioned sample. Ask the laboratory how it prepares the material and distinguish an incoming-condition measurement from a result after a specified conditioning procedure.
The minimum useful test record
| Field | What to record |
|---|---|
| Identity | Material and lot reference |
| Procedure | Test method and edition |
| Preparation | Conditioning method |
| Result | Value, unit and applicable reporting details |
| Context | Test date, laboratory and agreed acceptance criterion |
Specifying a 700-fill-power target
Treat 700 as a target requiring confirmation, not a guaranteed available grade. Specify the units, method, conditioning and acceptance rules, then assess the proposed lot. Higher numerical loft alone does not define the best filling for a pillow or every bedding construction.
From laboratory value to product design
Use fill power alongside composition and fill weight. Prototype the intended shell and baffle construction and evaluate distribution, recovery and finished-product performance. Request a repeatable approval protocol so later production lots can be compared to the sample on the same basis.
Further reading & source references
Consult the current standard or method for your project. These references explain terminology; they do not verify CIRCUDOWN’s certificates or product performance.
IDFL — fill power and conditioning ↗