NF X33-027-1*NF EN 14702-1:2006 Characterization of sludges - Settling properties - Part 1 : determination of settleability (Determination of the proportion of sludge volume and sludge volume index).
2006NF X33-027-1*NF EN 14702-1:2006 Characterization of sludges - Settling properties - Part 1 : determination of settleability (Determination of the proportion of sludge volume and sludge volume index).