UL 94 Plastic Flammability Tester
Category：Flammability Tester
Introduction
The Plastic Flammability Tester is a laboratory instrument designed according to the UL 94 standard to evaluate the flammability of plastic materials and components. It provides accurate and repeatable testing of how plastics react to fire under controlled conditions, including ignition, burn rate, flame spread, intensity, and combustion by-products. This instrument is essential for assessing fire safety, material compliance, and certification in industries such as electronics, appliances, automotive, and building materials. The tester supports multiple test types, including horizontal, vertical, foam, and non-rigid material burning evaluations.
Applications
The Plastic Flammability Tester is designed to evaluate the burning performance of plastics and plastic components under controlled laboratory conditions. It determines fire resistance, burn rate, flame spread, intensity, and combustion products.
Typical applications include:
(1) Electronics & Electrical Industry
– Plastic housings
– Electrical switches
– Socket and relay enclosures
(2) Home Appliances Manufacturing
– Plastic parts for rice cookers, hair dryers, microwave ovens, etc.
(3) Automotive Industry
– Interior plastic components
– Dashboards, trim panels
(4) Building Materials
– Plastic panels
– Foam polymer materials
(5) Laboratory Research & Quality Control
– Material flammability evaluation
– Fire rating certification
Supported test types:
(1) 94HB (ASTM D 635, ISO 1210) – Horizontal burning
(2) 94 V-0, V-1, V-2 (ASTM D 3801) – Vertical burning
(3) 5VA / 5VB (ASTM D 5048, ISO 9772) – 125mm vertical flame
(4) VTM-0, VTM-1, VTM-2 (ASTM D 4804, ISO 9773) – Non-rigid vertical burning
(5) HBF / HF1-2 (ASTM D 4986) – Horizontal burning for foam polymer materials
Standards
(1) ASTM D 635 – Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastic Material in Horizontal Position
(2) ASTM D 3801 – Standard Test Method for Vertical Burning Characteristics of Plastic Materials for Parts in Devices and Appliances
(3) ASTM D 5048 – Standard Test Methods for Flame Retardant Properties of Plastic Materials (5VA/5VB)
(4) ASTM D 4804 – Vertical Flammability of Flexible Plastic Films and Sheets
(5) ASTM D 4986 – Standard Test Method for Horizontal Burning of Cellular Polymeric Materials
(6) ISO 1210 – Plastics – Determination of Burning Behaviour of Horizontal Specimens
(7) ISO 9772 – Plastics – Determination of Flammability of Rigid and Flexible Materials
(8) ISO 9773 – Plastics – Determination of Flammability of Non-Rigid Materials
Technical Parameters
| Parameter | Specification |
|---|---|
| Internal Dimensions | 1200 × 830 × 1200 mm |
| External Dimensions | 1400 × 830 × 1450/1730 mm (with smoke extractor) |
| Weight | 95 kg |
| Burner Diameter | 12.7 mm (mandrel) |
| Measurement Methods | Horizontal/Vertical, HBF, 5VA/5VB, VTM |
| Gas Supply | Methane |
| Measuring Devices | Thermocouples connected to thermometer, timer system |
| Smoke Exhaust | Built-in 100 mm smoke extractor |
| Control | Built-in start and timing system; combustion measurement and regulation system (ASTM D 5207) |
FAQ
(1) What is this product?
The Plastic Flammability Tester is a laboratory instrument designed according to the UL 94 standard to measure the flammability of plastics and plastic components.
(2) What is it used for?
It evaluates fire resistance, burn rate, flame spread, intensity, and combustion products to ensure material safety.
(3) Why is it important?
It simulates how materials react to fire under controlled conditions, which is critical for safety certification in electronics, appliances, automotive, and building industries.
(4) What products can it test?
Plastic housings and electrical switches
Plastic components in home appliances
Automotive interior plastics
Plastic panels or foam materials for building
Laboratory or R&D material samples
(5) What types of tests does it support?
94HB (Horizontal burning)
94V-0/V-1/V-2 (Vertical burning)
5VA/5VB (High flame vertical burning)
VTM-0/1/2 (Non-rigid material vertical burning)
HBF/HF1-2 (Foam material horizontal burning)
(6) How does it operate?
Install and fix the sample in the holder
Adjust burner height and gas flow
Start the timing system and ignite the sample
Observe the burning process, record time, flame height, or damage length
After the test, clean the sample and record the data; optional automatic data collection and printing
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