Lignin

Quantity of lignin in pulp, wood, or black liquor

• Lignin in black liquor, UV method – reference SCAN N22
• Klason (acid insoluble) lignin content in wood and unbleached pulp after DCM extraction – reference Tappi T222
• Klason lignin content in bleached pulp (Excludes DCM extraction)
• Acid soluble lignin – reference Tappi um-250
• Kappa number of pulp – reference Tappi T236
• Permanganate Number of Pulp (K#) – reference Tappi um-251
• Residual lignin in bleached dissolving grade pulp – phosphoric acid method

Properties of lignin

• Moisture content of as received material – reference ASTM D3173
• Water extractives – reference NREL TP 510 42619
• DCM Extractives – reference Tappi T204
• Ash content @ 525°C – reference Tappi T211
• Ash content @ 750°C – reference ASTM D3174
• Metals by ashing, acid digestion and ICP analysis
• Micro Elemental analysis (C, H, N and O)
• Calorific value (BTU/lb) – Parr Oxygen bomb, reference Tappi T684
• Total Sulfur content
• Total Chloride content
• Carbohydrates (arabinan, xylan, mannan, galactan, glucan)
• Infrared spectra