M-LC Liquid seal laminar hood

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GMP Grade A Laminar Flow Hood (LAF) | Liquid Gel Seal HEPA | SUS304 | Pharma Cleanroom

The Ultimate Leak-Proof Solution: Unlike traditional gasket seals, our Liquid Tank Seal (Gel Seal) Technology utilizes a non-flowing gel trough to create an absolute airtight barrier. This guarantees Zero Leakage and ensures strict compliance with GMP Grade A standards, eliminating the risk of cross-contamination in critical pharmaceutical processes.

Smart Contamination Control: The intuitive Touchscreen Control Panel puts you in command. Real-time monitoring of airflow velocity, differential pressure, and airborne particle concentration (via optional counter) allows for immediate response to any environmental fluctuations, ensuring process stability.

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MayAir Technology (China) Co., Ltd. is a subsidiary of MayAir Group, and its registered brand is "MayAir". MayAir is committed to promoting the development of the air purification industry and improving the global air quality.

Since its establishment in 2001, MayAir, which is based in China, has used industrial-grade ultra-clean technology in commercial and public spaces.

From air intake to exhaust, from filter unit package to complete equipment to system integration, we continue to innovate to meet the growing demand for clean air products. The main business of MayAir is in air purification products. It also focuses on research and development, production, and sales of atmospheric environment treatment products.

The products are mainly used in cleanroom air purification. Due to the demand for air purification in the public medical and healthcare industry after the outbreak of the COVID-19 epidemic, MayAir vigorously promotes research and development, production, and sales of medical air purification equipment. MayAir gradually develops and accumulates technologies in atmospheric environment treatment and actively develops the market for industrial dust removal, oil mist removal, and VOCs treatment.

MayAir focuses on semiconductors, biopharmaceuticals, public health care, industrial dust removal, VOCs treatment markets,etc. Its products comprising fan filter units, high-efficiency, low-medium efficiency, chemical, electrostatic, and air purifiers are used for dust removal, oil mist removal, and VOCs treatment.

Its products can be used for cleanroom air purification, indoor air quality optimisation, and atmospheric pollution emission control.

The subdivision of downstream applications is mainly for the semiconductors, biopharmaceutical and food industry. It is also used in medical institutions, large commercial buildings, public places, home environments, industrial dust removal, VOCs treatment, etc.

MayAir has set up seven domestic production bases and two overseas production base. They are the Nanjing production base(three), Zhongshan production base, Chengdu production base, Tianjin production base and Wuxi production base. Meanwhile, its oversea production base is located in Malaysia and Canada. The total production plant area exceeds 50,000 square meters. The company is now one of the largest suppliers of the air purification industry in the country. 

  • Air filter
  • Air purification equipment
  • Industrial dust-removal equipment
More Information

PRODUCT OVERVIEW

 

The Laminar Flow Hood is a precision air purification unit designed to provide a localized high-cleanliness environment. It primarily consists of a housing, fan, high-efficiency filter, airflow equalization membrane, and lighting system. The unit can be installed either as a ceiling-mounted or floor-supported configuration and may operate independently or in series to form a continuous strip-shaped clean zone.
Filtered air is blown at a consistent velocity through a HEPA filter, then passes through the airflow equalization membrane to ensure a vertical, unidirectional flow of clean air, maintaining the cleanliness level required in the workspace.
Compared to traditional cleanrooms, the laminar flow hood offers several advantages, including lower capital investment, faster deployment, minimal structural requirements, ease of installation, and energy efficiency. It is widely adopted in industries such as precision machinery, electronics, pharmaceuticals, food processing, and fine chemicals.
In the pharmaceutical sector, laminar flow hoods are widely used and are available in two configurations: built-in fan type and externally connected fan type. Both options can be suspended from the ceiling or supported on a floor-mounted frame. In both configurations, a constant-pressure fan drives the airflow through a HEPA filter and then through the equalization membrane to deliver uniform vertical laminar flow, meeting stringent cleanliness standards for critical processes.
 

PRODUCT FEATURES

 

  • Compliant with GMP validation requirements
  • Grade A (GMP-compliant) clean zone
  • Fully constructed from SUS304 stainless steel
  • Compatible with both high-airflow fan supply and centralized air-conditioning supply
  • Liquid tank seal design ensures zero leakage

 

CONTROL DESCRIPTION

 
The system is operated via a touchscreen control panel, providing real-time display of operational parameters such as fan status, airflow velocity, and pressure differential. When connected to a particle counter, the system also supports real-time monitoring and display of airborne particle concentrations.
 

CLEANLINESS CLASS

 

  • Grade A (GMP Compliant)

 

Product Specifications

 

Item Details
Cleanliness Class Grade A
Filter Efficiency H14 99.995%@MPPS
Sealing Type Negative Pressure Gel Seal
Working Surface Air Velocity 0.36-0.54 m/s
Noise Level ≤65 dBA(A)
Illuminance ≥350 lux
Overall Material SUS304 Stainless Steel

 

PRODUCT STRUCTURE DESCRIPTION

 

The laminar flow hood is entirely constructed from SUS304 stainless steel and features a liquid tank seal to guarantee airtight performance. It provides vertical unidirectional airflow, with an optional airflow equalization membrane at the air outlet. The airflow velocity ranges from 0.36 to 0.54 m/s, and its performance can be verified using smoke testing.
The unit includes PAO aerosol injection and upstream sampling ports to facilitate on-site filter integrity testing. The side isolation panels are made from either anti-static polycarbonate (PC) or tempered glass, offering visibility and containment.
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