The selection of an open flash point tester depends on your specific needs. Let me help you sort out the key points:

Clarify core requirements

‌Sample TypeDifferent samples such as petroleum, chemical, and lubricating oil have different requirements for the range and accuracy of the instrument.

‌Test StandardConfirm whether it needs to comply with national standards (such as GB/T 3536-2008), American standards (ASTM D92), or other international standards.

‌Usage scenariosLaboratory, production line, or on-site testing? Different scenarios have different requirements for the portability and automation level of instruments.

Focus on key parameters

‌measurement rangeCommon room temperature~400 ℃, special samples need to be confirmed whether they are covered.

‌Accuracy and repeatabilityRepeatability ≤ 4 ℃ and reproducibility ≤ 8 ℃ are the hallmarks of high-quality instruments.

‌degree of automationFully automatic operation can reduce human error and improve efficiency.

‌safety designExplosion proof, automatic ignition and other safety functions are very important.

Practical advice

‌Prioritize digital displayReadings are more intuitive and have higher accuracy.

‌Confirm compatibilityEnsure that the instrument supports your samples and testing standards.

‌Trial and CalibrationIf conditions permit, try it out first and calibrate it regularly.

I hope I have helped you clarify your thoughts and select the appropriate instrument!