An ISO 8 Cleanroom is now globally defined by the ISO 14644 standard, and it is also formerly known as a Class 100,000 cleanroom under the retired U.S. FED-STD-209E.
According to ISO 14644 set by International Organization for Standardization, the ISO 8 cleanroom is engineered to contain no more than 3,520,000 particles per cubic meter that are 0.5 microns (µm) or larger, and it is one of cleanroom with lowest levels cleanliness classes.
An ISO 8 cleanroom offers the most practical and economical solution, providing essential protection without the exponential expense of higher-grade facilities, and this is why it is widely used in many industries.
Common Applications for an ISO 8 Classroom
Medical Device Manufacturing & Packaging: For assembling and packaging non-sterile devices (e.g., surgical tools, diagnostic equipment). It prevents particulate contamination that could affect device function or patient safety, complying with FDA and ISO 13485 requirements.
Pharmaceutical Oral Solid Dose Production: Used in the manufacturing, blending, and packaging of tablets and capsules. It controls cross-contamination between product batches and ensures dosage uniformity, a cornerstone of GMP for oral medications.
Food & Beverage Processing: Critical for the packaging of sensitive products like infant formula, ready-to-eat meals, and nutritional supplements. It significantly reduces the risk of microbial and particulate adulteration, extending shelf life and meeting stringent food safety standards.
Electronics & Precision Assembly: Ideal for the assembly of hard drives, connectors, and automotive sensors. It prevents microscopic dust from causing electrical short circuits, signal interference, or premature component failure.
Lithium-Ion Battery Production: Employed in zones like electrolyte filling and formation aging. It controls environmental dust, particularly metal particles, which can penetrate battery cells and create dangerous internal shorts.
Cosmetics & Personal Care Filling: Essential for filling creams, lotions, and serums into final containers. It protects product integrity from microbial and particulate contamination, ensuring consumer safety and brand trust.
Advanced Research Laboratories: Provides a stable background environment for sensitive analytical instruments (e.g., SEM, spectroscopy) and material sample preparation, guarding against airborne interference that could skew experimental results.
Aerospace Component Cleaning & Inspection: Used for cleaning, handling, and inspecting precision parts before assembly. It ensures no foreign object debris (FOD) remains, which could be catastrophic in aerospace applications.
Key Parameters of an ISO 8 Cleanroom to Control
Achieving and maintaining ISO 8 classification requires control over several integrated parameters:
Airborne Particle Counts: The definitive metric. Continuous or periodic monitoring must confirm compliance with the ISO 14644 limits for particles ≥0.5µm and ≥5.0µm.
Air Changes Per Hour (ACH): Typically ranges from 10 to 20 times per hour for industries without pharmaceutical production, and at least 20 times per hour is suggested for pharma manufacturing.
Airflow Pattern: Primarily uses non-unidirectional (turbulent) airflow. Filtered air is supplied from HEPA filters in the ceiling and mixes with room air, diluting contaminants which are then removed through low-level returns.
Temperature & Humidity: The temperature and humidity control range for an ISO Class 8 cleanroom is typically relatively broad. The relative humidity is generally maintained between 45% and 65%, and the temperature is controlled within 18°C to 26°C.
Pressure Differential: To ensure the cleanroom cleanliness, a +10 to +15 Pascals pressure differential must be maintained between zones of different cleanliness grades, as well as between clean and non-clean areas. A 5 Pascals pressure gradient should also be suggested between different functional rooms within the same cleanliness grade when necessary.
Lighting & Noise: Illumination is bright and shadow-free (typically ≥300 lux) for production area, and brightness ≥200 lux is suggested for corridors, airlocks and auxiliary cleanrooms. Noise levels are controlled (often ≤65 dB) to provide a comfortable operating environment and meet safety standards.
Personnel & Gowning: Operators are the largest contamination source. Strict procedures for gowning into coveralls, bouffant caps, gloves, and dedicated shoes are mandatory to minimize particle shedding.
Main Types of ISO 8 Cleanroom
Choosing the right physical structure is crucial for budget, timeline, and flexibility. There are three primary constructions:
1. Modular Cleanrooms
Modular Cleanrooms are the most popular choice for many industrial applications. Built from prefabricated modular systems, they offer high speed of cleanroom installation, exceptional layout flexibility, and ease of future modification or expansion.
2. Stick-Built Cleanrooms
Stick-Built Cleanrooms are traditional, permanent structures built from cleanroom panels, doors, windows, etc. They offer high customization options, allowing for precise design and integration with existing facilities or specific requirements.
3. Softwall Cleanrooms
Softwall Cleanrooms utilize a clear PVC curtain enclosure suspended from a metal frame. They represent the most economical and rapidly deployable option, ideal for creating a temporary clean zone within a larger room, for R&D projects, or for low-budget entry into controlled environments.
Make the Right Choice for Your Process
At KINROM, we combine over a decade of cleanroom expertise with a practical understanding of manufacturing realities. We don’t only build cleanrooms to standard but also engineer solutions that balance uncompromising quality with operational efficiency and lifecycle cost.
Ready to define your cleanroom strategy? Contact the KINROM team today for a confidential consultation and a preliminary feasibility assessment tailored to your ISO 8 cleanroom project needs.
