Cleanroom Tech Blog: Modular Solutions & Insights https://nordair-systems.de/en/blog Deep-dives into cleanroom technology for photonics and microelectronics. Stay updated on ISO standards and agile manufacturing trends. en HEPA Filters: Precision Air Flow in Modular Systems https://nordair-systems.de/en/post/hepa-filterklassen https://nordair-systems.de/en/post/hepa-filterklassen High-efficiency air filtration for cleanroom enclosures. Learn how HEPA-H14 filters ensure standards in photonics manufacturing. HEPA works via 4 mechanisms: inertia, direct interception, Brownian diffusion, electrostatics.
  • Filter classes: H10 (85%) → H13 (99.95%, ISO 7) → H14 (99.995%, ISO 5) → ULPA 15/16 (ISO 4).
  • Most difficult particle size: 0.3 µm (MPPS) — too big for diffusion, too small for interception
  • HEPA does not filter gases or VOCs — this requires additional filter systems.
  • Nordair uses H14: Optimum filter performance and energy efficiency (pressure loss).

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    ]]>     Sun, 26 Apr 2026 00:00:00 GMT     Cleanroom air exchange rate: guidelines, table & calculation https://nordair-systems.de/en/post/luftwechselrate-im-reinraum https://nordair-systems.de/en/post/luftwechselrate-im-reinraum ACH guidelines for ISO 5 to ISO 8 as a table, calculation formula and practical example — including special laminar flow case in accordance with ISO 14644-3
  • ACH guidelines: ISO 5 = 240-480, ISO 6 = 150-240, ISO 7 = 30-90, ISO 8 = 20-60 air changes/h.
  • From ISO 5, air velocity (0.45 m/s ± 20%) counts, not ACH - laminar flow follows a different logic.
  • Calculation: ACH × room volume = required airflow. For example, 56 m³ × 45 ACH = 2,520 m³/h.
  • Staffing, differential pressure and process particles are shifting real demand. Indicative values do not replace interpretation.
    • ]]>     Wed, 22 Apr 2026 00:00:00 GMT     Efficient Cleanroom Planning: Modular Strategies https://nordair-systems.de/en/post/effiziente-reinraumplanung https://nordair-systems.de/en/post/effiziente-reinraumplanung How to plan a modular cleanroom efficiently. Focus on ROI, agile manufacturing, and scalable ISO environments for SMEs and labs. ISO 14644-4 provides the framework; rigid implementation conflicts with production efficiency.
  • Excessive cleaning stirs up particles instead of removing them — adaptive regime with particle measurement suggests flat intervals.
  • Oversized ventilation increases energy consumption without increasing purity; demand-based ACH control saves significantly.
  • GMP certification is mandatory only for pharma/biotech — photonics and microelectronics need ISO 14644, not GMP.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     Energy-Efficient Cleanroom Solutions & Cost Reduction https://nordair-systems.de/en/post/energieeffiziente-reinraumlosungen-kostensenkung-durch-microenvironments-und-laminar-flow-boxen https://nordair-systems.de/en/post/energieeffiziente-reinraumlosungen-kostensenkung-durch-microenvironments-und-laminar-flow-boxen Reduce cleanroom Opex with microenvironments and laminar flow integration. Technical insights for cost-effective deep-tech manufacturing. Microenvironments (LFB, clean room cabin, clean room tent) replace the large clean room — clean zone only where the process requires it.
  • ISO 5 requires significantly higher air exchange rates than ISO 7/8 — each excessive class costs electricity permanently.
  • Design the ISO class according to actual process requirements, not according to the maximum principle.
  • Laminar Flow Box provides ISO 5 conditions in the work area without full-cleanroom OPEX.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     How Cleanrooms Work: Particle-Free Environments https://nordair-systems.de/en/post/grundlegende-funktionsweise-eines-reinraums-der-weg-eines-partikels-im-reinraum https://nordair-systems.de/en/post/grundlegende-funktionsweise-eines-reinraums-der-weg-eines-partikels-im-reinraum Understanding airflow and filtration in modular cleanroom tents. Technical insights into maintaining ISO-class contamination control.
  • People and clothing are the biggest source of particles — not outdoor air.
  • HEPA-H14 removes up to 99.995% of all particles ≥0.3 µm from the supply airflow.
  • Laminar displacement flow and overpressure cascade prevent particulate entry into the clean zone.
  • Room-in-room solutions create controlled cleanroom conditions even in unclean halls (warehouse, workshop).
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     Cleanroom Clothing Guide: Professional Protocols https://nordair-systems.de/en/post/kleidung-fuer-den-reinraum https://nordair-systems.de/en/post/kleidung-fuer-den-reinraum Maintaining purity through correct cleanroom apparel. Guidelines for semiconductor and optics assembly staff in ISO environments. Humans are the biggest source of particles. Clothing minimizes but does not eliminate them.
  • Equipment scaled with ISO class: ISO 7 = coat + hood, ISO 5 = overall with closed seams + mask.
  • Photonics (ISO 5) complete protection; microelectronics (ISO 6) overall + ESD gloves; research (ISO 7/8) jacket + hood.
  • Tightening protocol is crucial: Contamination starts at the entrance, not in the room.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     How to Clean Optics in Cleanroom Environments https://nordair-systems.de/en/post/optikreinigung https://nordair-systems.de/en/post/optikreinigung Professional guide on cleaning high-precision optics. Learn how to maintain ISO standards and prevent contamination in photonics labs. Always compressed air first: remove loose dust before wet cleaning starts
  • Wet cleaning with isopropanol or lens cleaner + lint-free wipes; never acetone on plastic optics.
  • Soft pressure mirrors; diffraction grilles and wire grid polarizers with compressed air only, no direct contact.
  • Laser assembly in a low-particle environment (LFB, cleanroom tent) prevents scattering, absorption, and fire damage.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     Modular vs. Traditional Cleanrooms: A Comparison https://nordair-systems.de/en/post/reinraum-vergleich https://nordair-systems.de/en/post/reinraum-vergleich Comparing cost, speed, and flexibility: Why modular cleanroom tents are the superior choice for agile deep-tech manufacturing. Permanently installed clean room: maximum control (ISO 3 possible), high CAPEX, less flexible.
  • Cleanroom cabin: ISO 5 possible, retrofittable in an existing hall, expandable — ideal for growing requirements.
  • Cleanroom tent: quick to assemble/dismantle, ISO 8 as standard; achievable up to ISO 5 with lock concept.
  • Laminar Flow Box: local ISO-5 zone without full cleanroom OPEX when only one work area needs to be clean.

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    ]]>     Thu, 16 Apr 2026 00:00:00 GMT     Cleanroom Basics: Science & Technology Guide https://nordair-systems.de/en/post/reinraume-die-grundlage-fur-wissenschaft-und-technik https://nordair-systems.de/en/post/reinraume-die-grundlage-fur-wissenschaft-und-technik Foundation of cleanroom technology. Everything engineers need to know about ISO 14644-1, air changes, and contamination control. Clean room = controlled environment in which particle and germ concentrations are actively reduced.
  • Core components: HEPA-H14, laminar airflow, lock systems, up to 600 air changes/h, depending on the class.
  • ISO 14644-1 defines 9 classes (1 = cleanest); ISO 5 allows a maximum of 3,520 particles ≥0.5 µm/m³.
  • Technical clean rooms (ISO) focus on particles; GMP clean rooms also focus on microbiological pollution.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT     Ultrasonic Cleaning in Cleanrooms | Photonics Guide https://nordair-systems.de/en/post/ultraschallreinigung-im-reinraum https://nordair-systems.de/en/post/ultraschallreinigung-im-reinraum Technical guide to ultrasonic cleaning for high-precision components. Best practices for photonics and laser industry applications. Choose devices with smooth, antistatic surfaces — otherwise the cleaning device itself becomes a source of particles.
  • Evaporating cleaning liquid without leaving any residue; for microelectronics: deionized water.
  • Control aerosol formation — extraction and placement under laminar flow box.
  • Drying with nitrogen flushing or vacuum dryer prevents new contamination.
    • ]]>     Thu, 16 Apr 2026 00:00:00 GMT