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This FLASH/NO-FLASH test can be done with method ASTM D7094. (2 ml sample volume)
This FLASH/NO-FLASH test can be done with method ASTM D6450. (1 ml sample volume)
It is recommended to measure mixtures and contaminated samples using the magnetic stirrer.
Adjust the start temperature e.g.: Ti=80 and the end temperature just one degree higher Tf=81.
If no flashpoint is detected at Ti=80 the sample is according to the requirements.
8.2.12 Non-Refilling Option
With this method a number of consecutive runs can be performed on the same sample in a continuous run, without
changing the sample in between measurements.
Unlike most multi-component substances, certain pure substances do not change their flashpoint, even if tested
several times. The batch run method can be used for ASTM D6450, ASTM D7094 and custom flash point method,
which is used in the MINIFLASH FP(H) VISION.
Possible applications include:
o Testing instrument performance and stability: This is the main application. Pure substances like Dodecane
can be tested several times, and the flashpoint will remain stable, although the amount of sample in the cup
is diminished (burned or vaporized).
o R&D purposes, such as Pure Substance Test: The batch screening can e.g. be used to find out, whether their
sample is pure or if contaminations within the pure substance lower the flashpoint. If this is the case, then
the first run might show a lower flashpoint and all of the following runs might show a higher flashpoint,
depending on the quantity of the contamination and whether all of the contamination was burned during the
first test.
In the example below a Batch Run with 95% Dodecane, mixed with 5% Diesel has been performed with 2 ml
test sample. Pure Dodecane flash point is 78.6°C (±2.1°C) when tested per ASTM D7094. In the Batch Run the
first flashpoint clearly shows the contamination (flashpoint at 76.1°C), whereas the second test already
produces a 78.1°C result, as expected for pure dodecane.
To select a batch run, please select “Non-Refilling” as option during the setup of the measurement.
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