Pharmaceutical Cleanrooms

In the pharmaceutical manufacturing process, the cleanliness of the environment is just as critical as the quality of the raw materials. Pharma United designs and manufactures cleanrooms and contamination control equipment to comply with rigorous industry regulations, minimizing the presence of contaminants by maintaining a highly controlled environment.

In the United States, pharmaceutical cleanrooms are regulated by the FDA; in Europe, they are regulated by the EMA. Pharmaceutical cleanrooms must comply with Current Good Manufacturing Practices (CGMP). According to the FDA, GMP refers to the Current Good Manufacturing Practices enforced by the agency. Compliance with CGMP regulations requires pharmaceutical manufacturers to adequately control their manufacturing operations, thereby ensuring the identity, potency, quality, and purity of their drug products. In short, GMP helps ensure product quality and safety consistency by focusing on five key elements—commonly referred to as the "5 Ps" of GMP: People, Premises, Processes, Products, and Procedures.

Pharma United's modular cleanroom systems and pharmaceutical Turnkey Cleanroom solutions have been widely adopted by pharmaceutical companies to achieve compliance with CGMP and FDA standards. Pharmaceutical filling rooms are typically classified as Class 100 / ISO 5 environments. The cleanliness classification of other rooms may vary depending on their specific intended use.

Requirements For Pharmaceutical Cleanrooms

To be categorized as a true pharma cleanroom, the environment must meet several requirements. The U.S. Food and Drug Administration (FDA) establishes and manages the standards for cleanrooms in pharmaceutical manufacturing, setting requirements to keep medications and other pharmaceutical products safe for consumption and use. Some of the cleanroom guidelines in pharma include the following:

Flooring. Flooring must have few to no cracks or joints where debris can get caught, build up, or (in the case of microbial contaminants) grow. The flooring material itself must also be resistant to chemical damage so that you can wash the floors with strong cleansing chemicals. One popular flooring option is a three-layer solution: a heat-welded vinyl base layer, a cove or epoxy coating, and an overcoating of urethane.
Environmental control. A cleanroom in pharmaceutical industry facilities must be equipped for complete control over the internal environment. This includes precise temperature control, humidity management, and even control over the pressure and flow (direction and velocity) of the air.
Air quality and contaminant control. Your cleanroom must also ensure that everything from dust particles to microorganisms will be less likely to enter, and easy to contain if they do penetrate the space. Requirements for a cleanroom’s degree of air quality, and maintaining that quality throughout production, are set to a high standard in the pharmaceutical industry to safeguard human health.
Internal activities. To further mitigate the risk of contamination, people within the environment must adhere to certain behaviors. Importantly, workers are trained to properly and promptly shut doors after entrance or exit to maintain optimal air quality. This also includes moving slowly for safety, wearing specialized gowns, and leaving jewelry outside.

All of these cleanroom requirements for pharmaceutical sector businesses work together to safeguard workers and equipment, protect pharmaceutical products from contamination, and keep end users safe from potential health concerns

Types of Pharmaceutical Cleanroom Equipment

Pharmaceutical cleanroom equipment plays a critical role in maintaining contamination control, ensuring compliance with GMP standards, and supporting stable production environments. Below are the essential cleanroom equipment types commonly used in pharmaceutical and biotech facilities:

Air Showers

Air showers are decontamination chambers installed at cleanroom entrances. They use high-velocity HEPA-filtered air to remove dust and particles from personnel and materials before entering the cleanroom.

Key features include:

High-efficiency HEPA air filtration
Adjustable air velocity system
Automatic sensor-controlled operation
Stainless steel or powder-coated construction
Interlocking door system for contamination control

Air showers are widely used in pharmaceutical manufacturing areas to reduce particulate contamination and maintain ISO cleanroom standards.

Laminar Air Flow (LAF) Systems

Laminar Air Flow systems provide a controlled, unidirectional airflow that continuously removes airborne particles from the working area, creating a highly sterile environment.

Key features include:

Vertical or horizontal unidirectional airflow
HEPA or ULPA filtration system
Consistent air velocity distribution
Low turbulence operation
Suitable for aseptic processing areas

Laminar Air Flow systems are commonly used in pharmaceutical filling, laboratory testing, and sterile preparation zones.

Cleanroom Pass-Thrus

Cleanroom pass-thru chambers are used to transfer materials between cleanroom and non-cleanroom areas without compromising air cleanliness or pressure balance.

Key features include:

Mechanical or electronic interlocking doors
HEPA filtration (optional in dynamic pass-thrus)
Stainless steel interior for easy cleaning
UV sterilization option available
Pressure differential protection

Cleanroom pass-thrus help minimize personnel movement in and out of cleanrooms, reducing contamination risk and improving workflow efficiency.

FAQs About Pharmaceutical Cleanrooms

Q: What is a pharmaceutical cleanroom?

A: A pharmaceutical cleanroom is cleanroom used for manufacturing of pharmaceuticals products such as medicines. They are required by the FDA to ensure the safety and effectiveness of the medicines. Pharmaceutical cleanrooms typical must be sterile and have extremely demanding cleanliness requirements.

Q: What Equipment Is Required In A Pharmaceutical Cleanroom?

A: Common pharmaceutical cleanroom equipment includes air showers, laminar air flow systems, cleanroom pass-thrus, HEPA filtration units, HVAC systems, and environmental monitoring systems (EMS/BMS) to maintain contamination control and stable operating conditions.

Q: What Is The Difference Between GMP And ISO Cleanroom Standards?

A: ISO standards focus on airborne particle concentration and cleanroom classification, while GMP (Good Manufacturing Practice) covers broader regulatory requirements including hygiene control, documentation, validation, and production processes. Pharmaceutical cleanrooms often need to comply with both.

Q: What cleanroom classification are pharmaceutical cleanrooms?

A: Pharmaceutical cleanrooms typically are ISO-5/class 100 for aseptic filling and sterile processes. Less critical area are often ISO-6/class 1000 or ISO-7/class 10,000. The EU GMP Annex puts similar but slightly more stringent requirements.

Q: What is a CGMP pharmaceutical cleanroom?

A: The FDA mandated CGMP Current Good Manufacturing Practices for pharmaceutical manufacturers which is a higher standard than GMP Good Manufacturing Practices. This is a higher standard for pharmaceutical cleanrooms.

Q: What cleanroom flooring is most common for pharmaceutical cleanrooms?

A: Pharmaceutical cleanroom flooring must be chemical resistant, otherwise the aggressive cleaning agents used in pharmaceutical cleanrooms will damage the flooring. The cleanroom flooring minimize joints and cracks. Contamination can get stuck in these features which can cause bacterial growth. The most common pharmaceutical cleanroom floorings are heat-welded vinyl with integral cove or epoxy coating with urethane over coat.

Q: What cleanroom wall is most common for pharmaceutical cleanrooms?

A: Pharmaceutical cleanrooms are subject to harsh chemical cleaning of both flooring and walls. Fiber Reinforced Plastic (FRP) walls have good chemical resistance are a common choice.

Q: What kind of cleanroom testing is most common for pharmaceutical cleanroom?

A: Pharmaceutical cleanrooms require both viable and non-viable particle testing. The viable testing is done with settling plates. The non-viable testing is done with laser particle counters.

Q: What are USP 797/800 cleanrooms?

A: USP 797/800 cleanrooms are pharmaceutical controlled environments used for sterile and hazardous drug compounding in pharmacies. These guidelines are issued by the United States Pharmacopeia (USP), while enforcement is typically handled by state pharmacy boards. In general, USP 797/800 cleanroom facilities include ISO 8 gowning areas, ISO 7 compounding rooms, and ISO 5 critical zones such as laminar flow hoods or glove boxes.

Q: What is the difference between a buffer room and a cleanroom?

A: A buffer room is a classified intermediate area within a cleanroom facility designed to reduce contamination risk and prevent cross-contamination between spaces. It is typically used for less critical activities such as material staging, preparation, or transfer, while the main cleanroom is reserved for high-precision or sterile operations requiring stricter environmental control.

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