Poly aluminum Chloride, PAC liquid 10% (PAC 10%) is distinguished by the level of basification – namely the concentration of hydroxy (OH) vs. aluminum ion, PAC products can be in the range of 5%-65% bass. But it is more effective in the clarification of water (e.g. turbidity/suspension of precipitation) because it has less aluminum content. Aluminum is less in the back water. In addition, aluminum leftovers are lower than aluminum products with higher alkaline content, so the best advice can be to use Poly aluminum Chloride, PAC liquid 10% the same rate for the total utilization rate of PAC, that is, 50 – 1,000 ppm of total flow rate.