外观Appearance                                                      褐色至棕色颗粒
体积交换容量volume total capacity (free base):  > 1.25 eq/l
含水量moisture holding capacity (free base):    54.0 - 60.0%
粒径particle size analysis:
均一系数uniformity coefficient:                               < 1.80
平均大小harmonic mean size:                            0.490 - 0.690 mm
   % < 0.300 mm:                                                   < 1.0%
   % > 1.180 mm:       

去除非水溶液中的酸性物质。