标题: 帮我翻译一下 [打印本页] 作者: chengyong001 时间: 2009-3-16 17:16 标题: 帮我翻译一下 Dissolve approximately 0,1 % by mass of analytical reagent grade anhydrous ammonium
chloride (NH4Cl), of a purity of not less than 99,8 %, in de-ionized water, having a conductivity
of not greater than 1 mS/m to give a resistivity of (3,95 ± 0,05) Ωm at (23 ± 1) °C.
NOTE 1 Select the quantity of ammonium chloride to give a solution in the required range of resistivity.