化工产品纯度就是原料的纯净程度，相对来说也是指原料的含杂程度。纯度越高的原料所含的杂质种类和数量越少。化工原料按纯度可分为工业纯和试剂纯二大类。而试剂纯的原料按纯度高低又可分为四级。
试剂纯级 reagent pure grade
优级纯试剂 guaranteed reagent ; GR
试剂纯级品 reagent pure grade
化学纯试剂 chemical pure ; CP
分析纯试剂 AR ; [试剂] analytical reagent
超纯试剂 ultra pure ; extra pure reagent
高纯及超纯试剂 Pure and ultra-pure reagent
高纯试剂 reagent of high purity ; High-purity reagent
等离子体质谱纯级试剂 ICP-Mass Pure Grade
光谱纯试剂 SP ; spectroscopic pure
所有化学试剂均为分析纯，且使用前未经纯化。
All chemicals were of analytical grade and used without further purification.
以光谱纯试剂做标准系列，氦气光路，X RF法测定工业循环水中硫和氯。
Sulphar and chlorine in industrial circulate water were determined by XRF with the spectrum pure reagent, in helium light way.
提供了处理工艺，并且把自制品与分析纯试剂及理论计算值进行了比较，三者基本在同一质量水平上。
Comparing the analysis of self - made product with the a . r . regent and calculated result , the three results are on the same level.
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