What Is Flash Point?
Flash Point is the lowest temperature at which a fluid gives off enough vapor to ignite momentarily when exposed to an open flame or spark. For transformer oil, maintaining a high flash point ensures it remains stable, non-volatile, and safe under normal operating temperatures.
Test Standard
ASTM D3828 – Standard Test Methods for Flash Point by Small Scale Closed Cup Tester
Applicable to:
- New and in-service mineral insulating oils
- Quality control for oil deliveries
- Detection of fuel, solvent, or gas contamination
Key Gases Measured
Insulating Liquids – Measurement of Relative Permittivity, Dissipation Factor (Tan δ) and DC Resistivity.
| Oil Type | Flash Point (°C) | Condition |
|---|---|---|
| New mineral oil | ≥ 135°C | Acceptable |
| Reclaimed oil | ≥ 125°C | Acceptable |
| Caution zone | < 120°C | Check for contamination |
| Critical zone | < 100°C | Immediate action required |
Why Flash Point Testing Matters
- Detects contamination from gasoline, solvents, or gas leaks
- Ensures safe handling, storage, and transportation
- Supports compliance with fire and safety regulations
- Helps verify oil purity during procurement or reclamation
- Protects personnel, equipment, and facilities from fire hazards
Our Testing Process
- Vacuum-sealed oil sample collection with unique barcode ID
- Small Scale Closed Cup test using automated ASTM D3828 apparatus
- Controlled heating, ignition, and detection of flash occurrence
- Precise measurement of temperature at ignition
- ERP-integrated reporting with instant safety classification
Report Includes
- Measured Flash Point temperature (°C)
- Classification: Safe / Caution / Unsafe
- Compliance status against IEC, ASTM, or OEM limits
- Visual flag for contamination risks
- Recommendations for filtration, replacement, or further testing
Why Choose Tru-FIL?
- ASTM D3828-compliant test methodology
- NABL-grade certified lab instrumentation
- ERP-integrated workflow and digital reporting
- 24/7 sample processing and national logistics support
- Trusted by utilities, OEMs, and industrial clients across India