enEN▾
PRODUCTS AND SERVICES

Cleanrooms

Cleanrooms are rooms designed to minimise contamination as much as possible whilst maintaining a sterile environment. Although they cannot achieve absolute sterility, when used correctly, they keep contamination at a controlled and known level, specified by the number of particles per cubic metre of air. This figure is several thousand times lower than that found outdoors, thereby creating a biosecure space in which to work on projects requiring very specific environmental conditions.

When discussing what a cleanroom is, it is often overlooked that each cleanroom must be designed for a specific purpose and, therefore, they differ from one another. Depending on the industry or sector in which they are to be used, both their purposes and their structure will differ. However, in addition to the structural design and layout of the components—since the most likely source of contamination is the room operator themselves—an essential part of using a cleanroom is the development of appropriate cleanliness protocols to ensure they remain aseptic.

With regard to current legislation on cleanrooms, it is the ISO 14644 standard, comprising 12 sections covering various aspects, which establishes the standardisation of these facilities.

What are the characteristics of cleanrooms?

Cleanrooms must meet very specific requirements, which is why their specifications are so precise. There are many ways to control the operating conditions inside these spaces:

  1. The air is sterile and is refreshed several times an hour to remove any potential contaminants.
  2. The internal pressure in these rooms is slightly higher than the external pressure to prevent air from flowing in when the doors are opened.
  3. The walls are covered with vinyl, and the floors are typically made of PVC or epoxy resin, providing completely seamless surfaces without any joints.
  4. The surfaces are specifically designed with curved shapes to prevent dust buildup and make it easier to maintain a certain level of cleanliness.
  5. High-efficiency HEPA filters are used, which capture 99.97% of 0.3-micron particles present in the air.
  6. The flow of materials, personnel, and waste is closely monitored to minimize any risk of cross-contamination or contamination from outside sources.

In short, cleanrooms are essential in environments that require exceptional sterility and hygiene. Across various industries, this includes cleanrooms in the food industry, the pharmaceutical industry, and the cosmetics industry, where they play a crucial role in ensuring the airtightness of work and production environments. If you have any questions, feel free to contact us—we’re here to help.

What Are Cleanrooms? Is There a Difference Between a Cleanroom and a White Room?

In practice, there is no difference between a white room and a cleanroom. Although some people believe that white rooms go a step further in eliminating contaminants and have more sophisticated facilities, in reality there is no separate standard for white rooms and another for cleanrooms; it is simply a matter of terminology.

Both terms are used interchangeably, so we can say that there is no difference between cleanrooms and white rooms; the only thing to be concerned about is whether they comply with regulations.

Salas blancas

Applications of Cleanrooms

To define what cleanrooms are and what they are used for, it is important to note that their primary function is to reduce the likelihood of contamination within a sterile, aseptic, or hygienic process. This protects both workers and products from the risks associated with handling such materials. In summary, the following applications can be identified:

  • Prevent cross-contamination. A cleanroom reduces the spread of aerosols carrying contaminants from other sections of a laboratory. A cleanroom can serve as a barrier between two areas with different sterility requirements or that perform procedures that could interfere with one another.
  • Protection of intermediate products to prevent them from being degraded by the producers themselves. The facility can prevent the growth of strains that could affect the final product.
  • Protection against external contamination. A cleanroom must be located in such a way that external airflow cannot reach it. This protects sensitive products from microorganisms that would degrade them.
  • For products that require a high level of sterility, a cleanroom is essential to ensure this.
  • Protection against abrasive aerosols. The cleanroom can act as a barrier against dust particles that could interfere with precision work, potentially causing irreparable damage to the final product. Maintaining biosafety in cleanrooms is essential for a wide range of processes in sectors such as the chemical and healthcare industries.

Which industries require the use of cleanrooms?

The sectors that require the use of cleanrooms are all those related to the research or technical fields of the natural sciences. In many of these sectors, aseptic conditions are necessary to ensure safe working conditions. Asepsis refers to protection against potentially infectious or hazardous elements. This applies to the chemical, pharmaceutical, and biological industries, as well as in human and veterinary hospitals, universities, and research laboratories, with the aim of minimizing biological or chemical contamination.

However, cleanrooms are also used in sectors that require very specific and clean conditions to carry out production processes. Thus, they are also used in nanotechnology and optical manufacturing, where even a low level of dust is sufficient to affect the final quality of the product.

What types of cleanrooms are there?

Generally speaking, cleanrooms meet their own definition in most cases. In many other cases, however, there are different types of cleanrooms. For example, many of them are not as strict when it comes to air purity, whilst others have high standards designed to prevent the occurrence of electromagnetic fields.

We can include within the subtypes of cleanrooms those spaces where machinery is used that is highly sensitive to various types of disturbances. In short, every cleanroom is different and has specific characteristics to adapt it to the work and tasks to be carried out within it, although they all comply with certain standards and regulations.

Contact us

Where can I find cleanroom companies?

At Labsom, we design and build cleanrooms tailored to the specific needs of each project. We have a multidisciplinary team that provides solutions for all GMP environments.

We have offices in Madrid and Barcelona. Feel free to contact us with no obligation, and we’ll be happy to assist you.

Frequently Asked Questions about cleanrooms

Critical processes are carried out in cleanrooms under controlled conditions, such as:

  • Manufacturing of pharmaceutical products and medical supplies
  • Production in the food industry
  • Manufacturing of cosmetics and dermocosmetics
  • Operations in operating rooms and hospital settings
  • Industrial processes requiring particle and contamination control

The duties of a cleanroom operator include various key tasks in controlled environments, such as:

  • Production in cleanrooms under controlled conditions
  • Product packaging in sterile environments
  • Loading and unloading of materials in classified areas
  • Product handling in accordance with contamination and quality protocols

We refer to a “gray room” as a conventional cleanroom with all the standard features and specifications, but without an air filtration or purification system.

Different types of cleanrooms vary in terms of the level of safety and cleanliness they provide. For processes that do not require an extremely high level of safety, cleanrooms with a higher concentration of airborne particles may be used, while others require stricter conditions.

More about Cleanrooms

What are Clean Rooms?

Main characteristics of cleanrooms. Applications and sectors.

Read more

Cleanroom Design

Conceptual, basic and detailed engineering. The steps prior to the start of construction of the room.

Read more

Cleanroom Classification

Classification of Clean Rooms and Sterile Areas according to ISO 14644 standards.

Read more

Laminar flow cabinet

Types of laminar flow cabinets for cleanrooms. Uses and requirements.

Read more

Cleanroom Furniture

Cleanroom solutions; sandwich panels, doors, SAS systems…

Read more

Air treatment

Air treatment systems adapted to the specific needs of each project.

Read more
© LABSOM S.L Todos los derechos reservados 2026