The results indicate sodium formate and sodium aceta te present low pH when neutralization, sodium bicarbonate and ammonium carbonate present high pH,and the Bayer PAK has better properties.

• 结果表明甲酸钠和乙酸钠为低pH中和剂,碳酸氢钠和碳酸氢铵为高pH中和剂,Bayer公司的PAK综合性能较好。