TAPPI T 529 om-21

TAPPI T 529 om-21

Surface pH Measurement of Paper

52,00 €

Details

This non-destructive test may be used to measure the hydrogen ion concentration (pH) on the surface of the paper in books and documents that constitute the collections of libraries and government archives. This method serves as an alternative to TAPPI T 590 "Hydrogen Ion Concentration (pH) of Paper Extracts - Cold Extraction Method," and TAPPI T 435 "Hydrogen Ion Concentration (pH) of Paper Extracts - Hot Extraction Method," because it avoids the destruction of printed material in the determination of the permanence expected for paper. pH values obtained through the application of this method to sized materials such as writing, printing, and industrial papers reflect only the pH of the surface of these materials and should not be construed as pH values which may be determined by the cold water extraction method of the same material.

Zusätzliche Information

Autor Technical Association of the Pulp and Paper Industry (TAPPI)
Veröffentlicht von TAPPI
Document type Normen
Thema /subgroups/9488
ICS 85.060 : Papier und Pappe
Seitenzahl 5
Ersetzt TAPPI T 529 om-14,TAPPI T 529 om-09,TAPPI T529
Schlagwort TAPPI T 529 om-21