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.
产量相对较少和较纯态的化学品，例如医药和生物制品、香料、照相药品和试剂化学品。
A chemical produced in comparatively small quantities and in a relatively pure state. Pharmaceutical and biological products, perfumes, photographic chemicals, and reagent chemicals are examples.
本标准样品采用高纯试剂在超净间中准确配制，分装于20毫升安瓿内，经均匀性检验合格。
This ERM was prepared in super-clean lab with high pure reagents and sub-packed in 20 ml ampoules, No significant differences in concentration among sub-samples were found.
研究了超净高纯试剂异丙醇中痕量镉的石墨炉原子吸收光谱测定法。
Graphite Furnace Atomic Absorption Spectrometry for measuring Micro-amount cadmium in Super-pure Chemical Reagents isopropyl alcohol is better sensitivity than the flame.
用工业级溶剂代替化学纯试剂，并将反应器放大5倍，可获得同样的结果。
The same results were obtained when solvent was industrial grade instead of chemical grade and the reactor was magnified by 5 times.
超高纯过氧化氢试剂是微电子材料加工必需的关键电子化学品。
The ultra high pure hydrogen peroxide is one of the critical chemical materials for wet chemical process in the microelectronic industry.
超高纯过氧化氢试剂是微电子材料加工必需的关键电子化学品。
The ultra high pure hydrogen peroxide is one of the critical chemical materials for wet chemical process in the microelectronic industry.
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