你们可以先寄来样品进行法定检验。一旦获准，货物即可装运到中国。
You can send in your samples first for our legal inspection. Once approved, the goods can be shipped to China.
该方法测定了样品中12种化合物，以扣除溶剂的面积归一法定量。
GC/MS was used for qualitative analysis of the sample and 12 kinds of chemical compounds could be separated.
先将液态丙烯汽化成气态，用气体进样阀将气态丙烯样品进样到气相色谱仪中，由5A分子筛填充柱进行分离，用TCD检测器检测，外标法定量。
Propylene was vaporized from liquid to gas, then sampled to GC by gas sample valve, separated in 5A molecular sieve column, and determined with TCD.
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