Specification: Testing method/ Standard Dirt content(% WT max.)/TCVN 6089:1995-0.03; Ash content(% Wt max.)/TCVN 6087:1995-0.50; Nitrogen Content (% wt)/TCVN 6091:1995- 0.60; Volatile Matter ( % wt)/TCVN 6088:1995-0.80; Wallace Rapid Plasticity (Po) (min)/TCVN 6092:1995-35.00 Plasticity Retention Index (PRI) (min)/TCVN 6092;1995-60.00;Lovibond Color Individual Value (max)/ TCVN 6093:1995-6.00. â?¢ Payment term: L/C AT SIGHT 100% OR T/T WITHIN 03 WORKING DAYS AFTER CONFIRMATION.