Principle

Product Features

1. All fixtures are made of stainless steel material, appearance nice and corrosion resistance;

2. Radiation bracket can be rotated, the rotation angle is greater than 90 degrees and easy to install the sample;

3. Sample installation height can be adjusted;

4. Electric power radiators;

5. The radiant heat radiator can be adjusted linear through the power control automatic adjustment;

6. The radiation shield is a quartz glass and the opening diameter is 100mm ± 5mm;

7. The heat radiation reach to to 3W / cm³ the position 30mm from the radiation shield plane;

8. Sample holder ring is made of stainless steel and the inner diameter is 118mm;

9. Take off the plate inner diameter is 118mm, depth 12mm, internal plug of cotton.

Specification

Applications

Industry Sectors:

- Building materials and construction products

- Railway (NFF 16‑101)

- Automotive (EU 95/28/EC, ECE R118)

- Aerospace and marine interiors

- Cable and wire insulation

- Furniture and upholstery components

Materials Tested:

- Thermoplastic films and sheets

- Flexible and rigid foams

- Synthetic textiles and nonwovens

- Composite laminates

- Thermal‑melting polymers and cable insulations

Compliance Framework:

- French M‑classification system (M0–M4)

- International fire‑safety standards for transport and construction

Frequently Asked Questions

Q1: What does the NF P 92‑505 test actually measure?

A1: It measures whether molten drips falling from a heated specimen ignite cotton wool placed in a receptacle below. This directly determines whether the material receives an M4 classification (highest flammability) or retains its rating from the primary fire test.

Q2: When do I need to run this test?

A2: You run this test when dripping (with or without flame) is observed during the main reaction‑to‑fire test – either NF P 92‑501 for rigid/thick materials or NF P 92‑503 for flexible/thin materials.

Q3: What happens if the cotton wool catches fire?

A3: The material is automatically classified as M4 – the highest flammability rating under the French M‑classification system. No further testing is required for that classification decision.

Q4: What types of materials can be tested?

A4: Thermal‑melting materials including thermoplastics, flexible foams, synthetic textiles, composite laminates, and cable insulations – essentially any material that may melt and drip when exposed to heat.

Q5: How is the apparatus calibrated?

A5: Calibration is performed using a calorimeter in accordance with NF P 92‑505, and a water‑cooled heat flux meter in accordance with ECE R118 Annex 7, ensuring precise and repeatable radiant output.

Q6: Does this equipment meet international standards beyond French regulations?

A6: Yes – it complies with NF P 92‑505, EU 95/28/EC, and is suitable for testing under ECE R118 Annex 7, making it applicable for automotive, railway, and construction testing globally.

Dripping Test Apparatus.pdf