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Understanding Melamine, Particle Board & MDF Formaldehyde Grades

Why Quality Matters in Interior Cabinetry

When it comes to kitchen and joinery cabinetry, not all melamine or particle board is made equal. One of the biggest differences between boards is the level of formaldehyde emissions. This impacts not just the quality of the material but also the health and safety of your home or workspace.

Below, we explain the different grades of melamine/particle board – E0, E1 and E2 – and why it pays to choose better quality board for your cabinetry.

What is Formaldehyde?

Formaldehyde is a chemical used in adhesives that bind wood particles together in particle board and MDF (medium-density fibreboard). All boards release some level of formaldehyde gas over time. However, higher quality boards are made using low-emission glues and stricter manufacturing processes.

Formaldehyde is classified as a known human carcinogen, and ongoing exposure to high levels can irritate eyes, nose and throat. That’s why it’s important to consider formaldehyde emissions when choosing cabinetry materials, especially for indoor use.

High Quality MDF Particleboard

The Grading System: E0, E1 and E2

Emission Class

Formaldehyde Emission Limit (mg/l)

Formaldehyde Emission Limit (ppm)*

E0

Less than or equal to 0.5

Less than or equal to 0.041

E1

Less than or equal to 1.0

Less than or equal to 0.08

E2

Less than or equal to 2.0

Less than or equal to 0.16

E3

Greater than 2.0

Greater than 0.16

E0 Board (Super Low Emission)

E0 boards have extremely low emissions and are the safest option for indoor air quality. They meet the strictest international standards and are often used in schools, hospitals, and homes where air quality matters.

E2 Board (Low Emission)

E1 is the most commonly used board in New Zealand and Australia. It is considered acceptable under most building codes,

E2 Board (High Emission)

E2 boards are significantly higher in emissions. These are rarely recommended for indoor use and are often found in low-cost imported furniture or older joinery.

What is the safe level of Formaldehyde Exposure?

Formaldehyde Exposure Limits and Emission Standards

Workplace Exposure Limits

  • Australia (Worksafe):
    • Time-Weighted Average (TWA): 1.0 ppm over 8 hours
    • Short-Term Exposure Limit (STEL): 2.0 ppm over 15 minutes
  • New Zealand (WorkSafe NZ):
    • Occupational Exposure Limit (OEL): 1.0 ppm
    • This limit must not be exceeded at any time

Indoor Air Quality Regulations

  • There are no current legal requirements in Australia or New Zealand for formaldehyde emissions from products based on indoor air quality.
  • However, indoor air quality is under review and may be included in future updates to the Building Code of Australia.

International Standards

  • United States (HUD):
    • 0.2 ppm limit for underlayment and decking materials
    • 0.3 ppm limit for panelling and similar products
  • Europe (E1 Standard):
    • Emissions must result in indoor air levels no greater than 0.1 ppm
  • Japan (“Sick House” Legislation):
    • Products must meet the F☆☆☆☆ rating
    • Emission limit: 0.03 ppm (equivalent to background levels)

Common International Benchmark

  • A formaldehyde emission limit of 0.1 ppm is generally accepted internationally for indoor environments.

Not all cabinetry boards are the same.

Choosing E0 or low-emission E1 particle board, MDF, Melamine, Plywood & Veneer products means better air quality, longer-lasting results, and peace of mind that your home or business is built to a higher standard.

If you’re planning a kitchen, laundry or custom joinery project, ask your cabinetmaker what board they use – and don’t be afraid to request E0.  

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