with calipers in the 20 40 pt range the furnish is 100 recycled fiber 1 lmw 200 as a coagulant fed to the machine chest at dosages typically between 1 and 6 ton as needed to control the charge in the vats between 0 02 and 0 01 meq ml 2 hmw 110 fed as a flocculant after the screens to each individual vat through a bank of rotometers to control dosage dosages are typically in the range of 1 to 4 ton as needed for retention and drainage profile modification 3 colloidal silica fed directly into the post dilution water for the hmw 110 after mixing with the dilution water and the hmw 110 passes through a static mixer a distribution header and then through the rotometers mentioned above and onto the machine typical dosages to date have been in the range of 0 5 to 1 0 dry pounds per ton 4 a cationic pregellatinized potato starch with 0 025 d s is added on one very high strength grade at 40 ton for added ply bond bags of the starch are normally thrown into the beater at 15 minute intervals depending on production rate by the beater engineer with the addition of the colloidal silica in the.