Certified Indoor Air Quality (IAQ) Assessments for Green Building Certification
Green Mark Testing is required for buildings in Singapore seeking BCA Green Mark Certification. hygION AIR provides ISO 17025-calibrated IAQ testing aligned with certification standards.
Our process follows NEA and ISO benchmarks, including SS 554:2016, ensuring accuracy and compliance. With reliable instrumentation and data integrity, we support your certification journey from planning and testing to results interpretation and remediation advisory.
What Is Green Mark Testing?
The BCA Green Mark Testing Scheme is Singapore’s framework for assessing building sustainability. Certification requires IAQ testing to ensure safe, healthy and energy-efficient environments, with measurements focused on high-use air-conditioned zones.
hygION AIR conducts green mark testing with calibrated instruments and certified processes, delivering audit-ready submissions. Beyond compliance, our testing identifies ventilation, pollutant and comfort issues, supporting stronger sustainability and operational outcomes.
Parameters Measured
Our IAQ testing for Green Mark Certification includes comprehensive analysis of the following parameters:
Carbon Dioxide (CO₂)
Indicates ventilation effectiveness and potential occupant discomfort.
Carbon Monoxide (CO)
A toxic gas that can accumulate due to poor combustion or inadequate exhaust systems.
Formaldehyde (HCHO)
A harmful VOC commonly released by furniture, flooring, and adhesives.
Total Volatile Organic Compounds (TVOC)
A wide group of chemical vapours from cleaning agents, paints, and furnishings.
Respirable Suspended Particulates (RSP)
Fine particles that pose health risks when inhaled deeply into the lungs.
Particulate Matter (PM2.5 / PM10)
Dust and smoke particles suspended in indoor air.
Temperature and Relative Humidity
Affect thermal comfort and mould risk.
Air Movement / Air Velocity
Measures airflow delivery and occupant comfort.
Bacteria and Mould Counts
Assess microbial load, especially in humid or poorly ventilated environments.
Each parameter is measured using calibrated equipment in accordance with NEA and ISO 17025 standards. This ensures high-precision results suitable for submission under BCA’s regulatory framework.
Why Green Mark Testing
Undergoing Green Mark testing demonstrates your building’s commitment to sustainability while improving occupant comfort, health and satisfaction.
Benefits include:
- Regulatory Recognition: Demonstrates alignment with national green building benchmarks
- Occupant Well-being: Ensures optimal indoor environmental quality, supporting health and productivity
- Operational Efficiency: Identifies potential ventilation or pollution risks early, enabling timely rectification
- Valuation Boost: Green Mark-certified buildings are more attractive to tenants and investors, and may command higher rental yields
Regular IAQ testing tracks trends over time, giving building owners a clear roadmap for long-term air quality management.
Our Green Mark Testing Process
We follow a structured, audit-friendly workflow designed for accuracy, repeatability, and full traceability:
- Site Planning: Identify testing zones based on floorplan, ventilation, and occupancy.
- Instrument Setup: Install and calibrate devices onsite with tagging for traceability.
- Monitoring Period Collect data over 8–24 hours per BCA guidelines and conditions.
- Data Analysis & Reporting: Analyse parameters, produce audit-ready IAQ report with pass/fail indicators.
- Client Briefing: Present findings, flag issues, and recommend corrective actions.
Who Needs Green Mark Testing?
Green Mark IAQ Testing is relevant for:
- Commercial Offices & Retail Malls : Especially new builds, major renovations, or sustainability-driven retrofits
- Industrial Buildings & Warehouses: For owners seeking energy-efficiency and indoor comfort improvements
- Educational Institutions: To ensure healthy learning environments aligned with NEA air quality benchmarks
- Healthcare Centres: Where clean indoor air directly impacts patient care and infection control
- Public Buildings & Community Facilities: For transparency and accountability in occupant-facing environments
Whether for new certification or re-certification, hygION AIR ensures a smooth, accurate testing process fully aligned with submission standards.
WHY CHOOSE hygION AIR
ISO 17025-Grade, Green Mark-Aligned Testing
Lab-grade calibration meets SS 554 and BCA Green Mark IAQ framework.
Comprehensive Reporting & Consultation
Audit-ready reports with expert guidance for compliance or improvement.
Targeted Remediation Support
From ventilator rental to pollutant treatment and IAQ rebalancing.
Book a Green Mark IAQ Test
Related Services
Green Mark Testing can be delivered as a standalone service or as part of our broader indoor air quality strategy:
