Ensure representative sample pressure

The single-phase sample bottle is a mercury-free sample bottle used to capture high-pressure monophasic fluid samples for storage and transportation. Pressure compensation is used to prevent the occurrence of phase changes, such as separation and asphaltene precipitation, by maintaining the sample pressure above reservoir pressure. A sample piston keeps the sample separate from the buffer fluid used for pressure compensation. Maximum allowable working pressure is up to 25,000 psi. Transportation regulations are satisfied by creation of a gas cap in the nitrogen chamber when sample transfer is completed.