Where should oil samples be stored?

Storing oil samples in a cool and dark place is crucial for maintaining the integrity of the samples over time. Exposure to light and elevated temperatures can lead to chemical reactions, such as oxidation, which may alter the composition of the oil and render the sample unrepresentative of its original condition. Keeping oil samples in a cool environment helps inhibit the rates of these reactions, preserving their quality and providing accurate results during testing and analysis.

In contrast, storing them in a refrigerator might not be ideal for all types of oil samples, as some oils could thicken or change properties at lower temperatures. Room temperature is generally less protective than a cool and dark environment, as it may lead to faster degradation. Keeping samples in a heated area is counterproductive, as heat accelerates chemical degradation, risk compromising the sample's reliability when analyzed for various characteristics.