1. 等级: 12/16

2. 特性: 比重: 1.48; pH 值 25 °C (在水中) : 4 -6; 游离水分 (80 °C for 15 HRS): 3-5 %; 闪点 (闭杯实验): 193 °C; 硬度-维克氏硬度: 25-30; 莫氏硬度: 3- 4; 干包装密度（磅/立方英尺): 45; 弹性模量: up to 21,000 psi

3. 化学分析 氮: 0,10; 纤维素: 46/60; 木质素: 20/30; 甲苯溶解度 : 0,5/1,0; 甲氧基: 6,5; 氯: 0,10; 灰: 1,5; 角质: 1,0;

以上参数只做参考不作为硬性指标，实际使用参数会根据操作使用环境的改变而改变。水质水量及出水水质要求不同，对粒径等级的要求会有所改动，但产品本身的物理特性和化学特性没有太大变化。

为便于查阅以下是英文

Reference for export technical standards of walnut shell filters for water treatment

1. Level: 12/16

2. Features: Specific gravity: 1.48; pH value 25 °C (in water): 4 -6; free moisture (80 °C for 15 HRS): 3-5 %; flash point (closed cup test): 193 °C; Hardness-Vickers Hardness: 25-30; Mohs Hardness: 3-4; Dry Packing Density (lb/cubic foot): 45; Modulus of Elasticity: up to 21,000 psi

3. Chemical analysis: Nitrogen: 0,10; Cellulose: 46/60; Lignin: 20/30; Toluene solubility: 0,5/1,0; Methoxy: 6,5; Chlorine: 0,10; Ash : 1,5; Horny: 1,0;

The above parameters are for reference only and not as rigid indicators. The actual use parameters will change according to the changes in the operating environment. The requirements for water quality and effluent quality are different, and the requirements for particle size levels will be changed, but the physical and chemical properties of the product itself have not changed much.