... Add alkali and distillation time control by manually.Description:Kjeldahl method for the principle applies to food, feed, ... brewing, sugar, pharmaceuticals, coal, rubber material,such as the determination of crude protein, , Accurate testing, safe, reliable,user-friendly ... .Technical parameters:1. Measure Range:0.1mg~200mg Nitrogen;2. Precision:Relative difference 1%;3. Reproducibility: parallel ...