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We have seen 100,000-class cleanrooms in many places, and the requirements for many cleanroom grades are basically in this range, so many people want to know what the 100,000-class Cleanroom standard is? In a popular sense, a 100,000-class cleanroom means that the particles per cubic meter in the workroom are controlled within 10W. If the food industry has a 100,000-class production workshop, it is quite good!
The 100,000-level cleanroom standard can be understood as a cleanliness standard from the perspective of industry standards. The general cleanliness levels are usually divided into 10, 100, 1000, 10,000, 100,000, and 300,000 levels!
From the perspective of ventilation times:
100,000 (100,000) level requires 18-25 ventilations per hour, and the air purification time after full ventilation does not exceed 40 minutes
10,000 (10,000) level requires 25-30 ventilations per hour, and the air purification time after full ventilation does not exceed 30 minutes
1000 (1,000) level requires 40-60 ventilations per hour, and the air purification time after full ventilation does not exceed 20 minutes.
The cleanliness standards of various grades including 100,000-grade cleanrooms are as follows:
ISO 14644 classifies the air cleanliness level in clean rooms (areas) and related controlled environments based on the single indicator of suspended particle concentration, and only considers the particle groups with a cumulative distribution within the particle size limit (limit) range of 0.1um~5.0um. According to the particle size, it can be divided into conventional particles (0.1um~5.0um), ultrafine particles (<0.1um) and macro particles (>5.0um).
GB 50073-2013 Cleanroom design Specifications 100,000 and Purification Workshop Standard Reference 8, as shown in the following figure
Air cleanliness classification standard: GB/T16292-1996 (Chinese standard)
British 5295 standard Clean Room and air purification device classification:
Comparison of various international cleanliness standards:
| US Federal | US Federal | British Standard | Australian Standard | French Standard | German Standard | International Standard | Japanese Standard |
| Standard 209E | Standard 209D | BS5295 | AS1386 | AFNORX44101 | VDI2083 | 14644-1 | JACA24 |
| 0 | 1 | 1 | |||||
| 1 | 2 | 2 | |||||
| 1 | M1.5 | C | 0.035 | 2 | 3 | 3 | |
| 10 | M2.5 | D | 0.35 | 3 | 4 | 4 | |
| 100 | M3.5 | E | 3.5 | 4000 | 4 | 5 | 5 |
| 1000 | M4.5 | G | 35 | 5 | 6 | 6 | |
| 10000 | M5.5 | J | 350 | 400000 | 6 | 7 | 7 |
| 100000 | M6.5 | K | 3500 | 4000000 | 7 | 8 | 8 |
| M | 9 |
The standards for 100,000-level cleanrooms are:
Maximum allowable number of dust particles (per cubic meter);
The number of particles larger than or equal to 0.5 microns shall not exceed 3,500,000, and the number of particles larger than or equal to 5 microns shall not exceed 20,000;
Maximum allowable number of microorganisms;
The number of floating bacteria shall not exceed 500 per cubic meter;
The number of submerged bacteria shall not exceed 10 per culture dish.
Pressure difference: The pressure difference of cleanrooms with the same cleanliness level shall remain consistent. For adjacent cleanrooms with different cleanliness levels, the pressure difference shall be >5Pa, and the pressure difference between cleanrooms and non-cleanrooms shall be >10Pa.
