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How is the cleanliness of a laboratory classified?

How is the cleanliness of a laboratory classified?

The classification of laboratory cleanliness levels is crucial for ensuring the precision of experiments and the quality of products. The internationally recognized standard is ISO 14644, while China has the GB 50073 - 2013 specification. The ISO 14644 standard ranges from ISO Class 1 to ISO Class 9, with decreasing cleanliness levels; the lower the class, the more suspended particles are allowed per unit volume. For instance, the ultra-clean ISO Class 1 permits only 10 suspended particles per cubic meter with a diameter of ≥0.1μm, suitable for ultra-precision electronic manufacturing, whereas ISO Class 9 has more lenient controls. Under China's standards, unidirectional flow cleanrooms include Class 100 and Class 1000, while non-unidirectional flow includes Class 10,000 and Class 100,000. Different levels correspond to various production and experimental scenarios, precisely matching the cleanliness requirements across different fields.

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How to ensure a high-precision environment in the production of precision instruments

How to ensure a high-precision environment in the production of precision instruments

The production environment for precision instruments must ensure high precision conditions, which requires addressing multiple aspects.

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Solutions for the construction of constant temperature and humidity laboratories in the semiconductor industry

Solutions for the construction of constant temperature and humidity laboratories in the semiconductor industry

This article delves into the key elements of building a constant temperature and humidity laboratory in the semiconductor industry. Starting from the stringent requirements of temperature and humidity control, it elaborates on aspects such as planning and design, equipment selection, environmental monitoring and calibration, energy-saving measures, and safety protection during the construction process, aiming to provide comprehensive and professional guidance for laboratory construction in the semiconductor field and related high-tech industries.

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In a constant temperature and humidity laboratory, should one choose precision air conditioning or regular air conditioning?

In a constant temperature and humidity laboratory, should one choose precision air conditioning or regular air conditioning?

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Precision machining and constant temperature and humidity clean environment

Precision machining and constant temperature and humidity clean environment

This article delves into the close relationship between precision machining and a constant temperature and humidity clean environment. It elaborates on the characteristics of precision machining and its stringent requirements for environmental stability in terms of temperature, humidity, and cleanliness. It analyzes the impact mechanisms of temperature and humidity fluctuations and dust particle contamination on the precision, surface quality, and reliability of precision machining. Additionally, it comprehensively introduces the technical methods, equipment system selection, environmental monitoring, and control strategies necessary to build and maintain a constant temperature and humidity clean environment that meets the needs of precision machining, emphasizing its importance in critical fields such as aerospace, electronic information, and medical devices, providing comprehensive and in-depth reference materials for engineering technicians, business managers, and related researchers in the field of precision machining.

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