Sodium Tripolyphosphate;Sodium Polyphoshphate,German Technology Put 2.5kg blended phospate in 100kg water(Temp.below10 degree,Stir and let blended phosphate solute in water(phosphte is very easy soluble)Put 100kg PUD shrimp into the solution. 1st hour: stir 5-10 seconds every 10minutesFrom 2nd hour: stir5-10 seconds every 30 minutesWashing/drying and freezing. Phosphate Blend