Systems and methods for differentiating bubble points from dew points

A method, comprising:

• depressurizing a flowline via a hydraulic module of a formation testing tool, wherein the flowline contains a formation fluid;
• detecting a phase change within the formation fluid via at least one spectrometer configured to identify bubbles or dew drops in the formation fluid that are caused by depressurization of the flowline;
• and
• determining whether the formation fluid is a bubble point fluid, a dew point fluid, or neither the bubble point fluid nor the dew point fluid via a fluid analysis module of the formation testing tool, the fluid analysis module in communication with the at least one spectrometer and configured to analyze the bubbles or dew drops identified by the at least one spectrometer,
• wherein determining that the formation fluid is neither the bubble point fluid nor the dew point fluid comprises:
• determining, via the fluid analysis module, that a wavelength independent outer diameter of the bubbles in the formation fluid is increasing and scattering;
• and
• determining, via the fluid analysis module, that the increasing and scattering wavelength independent outer diameter is not followed by high amplitude scattering.