在中国，国家电子超纯水的标准GB/T1146.1-1997要求必须遵循表格中列出的严格技术规范，以确保生产出符合行业最高标准的电子级水。以下是四个不同级别的指标和对应要求：

EW-I（一级）：

电阻率：不低于17 MΩ.cm（95%时间）

硅含量：不超过2 µg/l

1µM微粒数：不超过0.1 个/ml

细菌数量：不超过0.01 个/ml

铜、锌、镍含量各不超过0.2 µg/l

钠、钾、氯含量各不超过0.5 µg/l

硝酸根、磷酸根、硫酸根含量各不超过1 µg/l

总有机碳含量不得超过20 µg/l

EW-II（二级）：

电阻率为15 MΩ.cm（95%时间），其余指标与EW-I相似，但允许更高水平的污染物。

这些技术指标对于工业电子领域至关重要，因为它们直接影响到产品质量。在实际应用中，可以采取不同的工艺来达成这些标准。例如，我们可以采用以下四种不同工艺：

预处理+反渗透+储罐+阳床+阴床+混合床+精制储罐+纯水泵+紫外线消毒器+精密过滤器

预处理一级反渗透加药机(调整pH)+中间储罐第二级反渗透正电荷膜系统->纯化储罐->紫外线消毒器->0.2或0.5μm精密过滤器

预处理→反渗透→中间储罐→EDI装置→纯化系统储罐→紫外线消毒器→精密过滤器

4.pre-treatment → reverse osmosis → intermediate tank → EDI device → purified water tank → UV sterilizer →

Electronic grade ultra-pure water equipment has a wide range of applications, including:

GMP-compliant purification for semiconductor materials, components, printed circuit boards and integrated circuits.

Ultra-pure materials and chemicals for research and development.

Laboratory and pilot plant facilities.

Automotive industries such as car polishing processes.

High-tech precision products.

In conclusion, electronic-grade ultra-pure water is essential for maintaining the highest standards in various industries, ensuring the quality of products and services that drive technological advancements forward.

Keywords: Electronic Grade Ultra Pure Water Equipment; EDI System; Industrial Electronics Use Water Treatment Systems; Guangdong Jiebang Water Treatment Co., Ltd.

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