What Valmet Paper Lab measures?

Blackening

Select measurement module
Burst Tear Tensile Smoothness-top and bottom Bendtsen Smoothness-top and bottom Parker Print Surf Smoothness-top and bottom Sheffield Smoothness-top and bottom Bekk Smoothness-top and bottom/Porosity-Oken Porosity Bendtsen Porosity Gurley Porosity Sheffield UV-Color Diffuse Gloss-2 Tappi 75° Caliper Basis Weight Tensile Stiffness Orientation Multi-Filler Moisture Compression strength (SCT) S-Test Bending Stiffness (Board and Paper models) Blackening Scarredness Formation

Blackening module measures the nonuniform optical appearance of highly calendered papers.

Measuring range
Blackening index 0-100

Datasheet