GB/T 29779-2013 "Pulp—Determination of fiber length—Non-polarized light method" specifies a non-polarized light method for determining fiber length in pulp, applicable to all types of pulp. The method employs a fiber length analyzer to scan fibers in a pulp suspension using non-polarized light, measuring fiber length and analyzing its distribution through image recognition technology. The standard defines requirements for sample dilution concentration, instrument calibration, and test parameter settings. The test must involve no fewer than 1,000 fibers, with results expressed in terms of weight-weighted average length, number-weighted average length, and other indicators, providing data for the analysis of pulp fiber properties.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y30 | ICS | 85.010 |
| Release Date | 2013-10-10 00:00:00 | Implementation Date | 2014-05-01 00:00:00 |