Final answer:
In a flashpoint analysis, the sample and test cup should be at least 32°F below the expected flashpoint to ensure safety and prevent accidental ignition.
Step-by-step explanation:
When performing a flashpoint analysis, the correct temperature for the sample and the test cup should be at least 32°F below the expected flashpoint. This is in accordance with safety regulations that ensure a margin of temperature below the point where the substance could ignite, preventing accidental combustion during the analysis process. The flashpoint of a substance is a critical safety parameter, indicating the lowest temperature at which it can vaporize to form an ignitable mixture in air.
Considering the provided information on flashpoints, such as:
- Below 73°F
- Below 100°F
- Above 100°F not exceeding 200°F
- Above 200°F
- Will not burn
it is clear that storing substances at safe temperatures and understanding their flashpoints are essential for handling potentially flammable materials.