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This method is suited for the visual estimation of dirt in paper or paperboard in terms of equivalent black area. For dirt in pulp, see TAPPI T 213 'Dirt in Pulp.'
| Author | TAPPI - Technical Association of the Pulp and Paper |
|---|---|
| Editor | TAPPI |
| Document type | Standard |
| Format | File |
| Confirmation date | 2012-12-12 |
| ICS | 85.060 : Paper and board
|
| Year | 2012 |
| Document history | |
| Country | USA |
| Keyword | ANSI 437;ANSI/TAPPI T 437;ANSI/TAPPI 437;437;ANSI/TAPPI T 437 om-2012 |