[picture 3. Cleanroom for LCD repair in Thailand]

 

 

[picture 4. cleanroom of class 1,000, Algeria]

 

1. What is a Cleanroom?

 

A cleanroom or clean room is an environment, typically used in manufacturing or scientific research, with a low level of environmental pollutants such as dust, airborne microbes, aerosol particles, and chemical vapors. More accurately, a cleanroom has a controlled level of contamination that is specified by the number of particles per cubic meter at a specified particle size. To give perspective, the ambient air outside in a typical urban environment contains 35,000,000 particles per cubic meter in the size range 0.5 μm and larger in diameter, corresponding to an ISO 9 cleanroom, while an ISO 1 cleanroom allows no particles in that size range and only 12 particles per cubic meter of 0.3 μm and smaller. In the pharmaceutical industry, clean rooms play a crucial role in the manufacturing of pharmaceutical products which are required to be free from microbial and particulate contamination and protected from moisture. Such pharmaceutical products are manufactured and manipulated in cleanrooms, which are fitted with HEPA and, if required, ULPA filters as well as dehumidifier systems.

 

2, Different class of electronic cleanroom?

 

(1) US FED STD 209E cleanroom standards

 

Class	maximum particles/ft3					ISO equivalent
	≥0.1 µm	≥0.2 µm	≥0.3 µm	≥0.5 µm	≥5 µm
1	35	7.5	3	1	0.007	ISO 3
10	350	75	30	10	0.07	ISO 4
100	3,500	750	300	100	0.7	ISO 5
1,000	35,000	7,500	3000	1,000	7	ISO 6
10,000	350,000	75,000	30,000	10,000	70	ISO 7
100,000	3.5×106	750,000	300,000	100,000	700	ISO 8

 

(2) ISO 14644-1 cleanroom standards

 

Class	maximum particles/m3						FED STD 209E equivalent
	≥0.1 µm	≥0.2 µm	≥0.3 µm	≥0.5 µm	≥1 µm	≥5 µm
ISO 1	10	2.37	1.02	0.35	0.083	0.0029
ISO 2	100	23.7	10.2	3.5	0.83	0.029
ISO 3	1,000	237	102	35	8.3	0.29	Class 1
ISO 4	10,000	2,370	1,020	352	83	2.9	Class 10
ISO 5	100,000	23,700	10,200	3,520	832	29	Class 100
ISO 6	1.0×106	237,000	102,000	35,200	8,320	293	Class 1,000
ISO 7	1.0×107	2.37×106	1,020,000	352,000	83,200	2,930	Class 10,000
ISO 8	1.0×108	2.37×107	1.02×107	3,520,000	832,000	29,300	Class 100,000
ISO 9	1.0×109	2.37×108	1.02×108	35,200,000	8,320,000	293,000	Room air

 

 

(3) BS 5295 cleanroom standards

 

	maximum particles/m3
Class	≥0.5 µm	≥1 µm	≥5 µm	≥10 µm	≥25 µm
Class 1	3,000		0	0	0
Class 2	300,000		2,000	30
Class 3		1,000,000	20,000	4,000	300
Class 4			200,000	40,000	4,000

 

2. Construction Cost of LCD repair cleanroom

 

(1) Clean area 15m X 7m

(2) Air Handling Unit Installation Area 5m X 7m 

(3) Reference Price :  US$ 120,000

 

3. Contact

[Picture 5. Cleanroom Construction by Mr. Yeo in Cuatitlan, Mexico] 

 

그동안 한국(60채), 중국, 말레이시아, 인도, 알제리, 멕시코, 콜롬비아, 브라질에서 클린룸을 건설했습니다. 마스크 제조용 클린룸 시공문의는 010-2734-3535 여정현으로 연락주시기 바랍니다.

 

If you had any interest on LCD repair Cleanroom, please contact to hddtrade@gmail.com +82-10-2734-3535