Monobloc Cleanrooms: Achieving Optimal Particulate Control and Contamination Prevention

Cleanrooms play a crucial role in industries where strict control of particulate contamination and cross-contamination risks is essential. Among the various cleanroom construction options available, monobloc cleanrooms stand out for their ability to provide superior particulate control and meet the rigorous standards of ISO 14644-1 and Good Manufacturing Practice (GMP).

The term “monobloc cleanrooms” specifically emphasizes the concept of a unified or integrated structure, often referring to cleanrooms constructed with panels that have a seamless or flush finish.

In this blog post, we will explore the advantages of monobloc cleanroom systems, focusing on their flush finish, minimal ledges, panel fabric considerations, and envelope integrity.

Flush Cleanroom Systems for Enhanced Particulate Control

A significant advantage of monobloc cleanroom systems is their flush finish, eliminating trapping points and minimising the risk of particulate contamination. Flush cleanrooms ensure smooth surfaces without protrusions or recesses that could collect and harbour particles, making them ideal for industries such as pharmaceutical production, where stringent cleanliness standards are paramount. Monobloc cleanrooms offer the option to incorporate flush vision panels and doors, further enhancing the control of particulate contamination. GMP cleanroom construction principles emphasise the importance of minimising projecting ledges, as they can become potential sources of particulate contamination and hinder cleaning processes.

Panel Fabric Considerations

When choosing the fabric for the cleanroom panel finish, there are several factors to consider. Cleaning regimes, robustness, and surface resistivity are among the key considerations. Different industries, such as battery, semiconductor, and microelectronics, have specific requirements for surface resistivity. Monobloc cleanroom systems offer flexibility in panel fabric choices, allowing for customisation based on the industry’s unique needs while ensuring durability and compatibility with stringent cleaning protocols.

Air Recirculation and Air Return Panels

Air recirculation is an essential aspect of cleanroom operation, contributing to the efficiency of air filtration and maintaining a clean and controlled environment. Monobloc cleanrooms incorporate air return panels strategically placed within the cleanroom facility to facilitate the recirculation of filtered air. The filtered air is drawn through these panels and recirculated back into the cleanroom environment, ensuring a continuous supply of clean and filtered air throughout the space to meet the particle count limits according to ISO 14644-1 and EU GMP guidelines.

Positive Pressure Control

Positive pressure is a fundamental principle in cleanroom design. By using specialised air handling systems and advanced HVAC technologies, monobloc cleanrooms can maintain a higher pressure inside the cleanroom compared to surrounding areas. This pressure differential acts as a barrier, preventing the ingress of particles and contaminants that may be present in adjacent spaces. The controlled positive pressure ensures that the cleanroom environment remains clean and free from external contamination sources.

Envelope Integrity and Moisture Protection

The building envelope plays a critical role in maintaining a controlled cleanroom environment. A fully sealed monobloc cleanroom panel system with airlocks and well-sealed doors provides superior envelope integrity. This level of protection insulates the cleanroom and safeguards it from moisture ingress. Moisture control is particularly crucial in industries where excess humidity can adversely affect product quality or compromise the integrity of sensitive equipment.

Monobloc cleanroom systems offer numerous advantages in achieving optimal particulate control and minimizing contamination risks. These cleanrooms ensure superior control over particulate contamination with their flush finish, minimal ledges, and incorporation of flush vision panels and doors. Moreover, the choice of panel fabric and a fully sealed envelope further enhances the cleanroom’s robustness and protection against moisture ingress. By adopting monobloc cleanroom construction principles, pharmaceutical production, battery manufacturing, and microelectronics can maintain stringent cleanliness standards and ensure the highest product quality.

Monobloc cleanroom case studies

DER-IC Cytiva

Driving the Electronic Revolution Industrialisation Centres (DER-IC) 250m² cleanroom

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Cytiva supports global biopharma industry with 6,000m² cleanrooms in Cardiff, Wales

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Space Park Leicester Roslin

C2C builds satellite engineering 325m² cleanroom at Space Park Leicester

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BioCube cell & gene therapy suite for RoslinCT – GMP Grades B, C & D

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