Determine particle size distribution by size exclusion chromatography

A particle characterisation platform comprising:

• a sample measurer configured to perform measurements according to a first particle characterisation technique;
• and
• a particle separator configured to separate samples comprising particles;
• wherein the particle characterisation platform is configured to:
• perform a first measurement on the sample with the sample measurer using a first particle characterisation technique;
• flow the sample from the sample measurer to the particle separator;
• separate the sample with the particle separator;
• perform a second measurement on the separated sample;
• and
• compare the first measurement and the second measurement to determine if all the particles of the sample have passed through the particle separator, wherein comparing the first measurement and second measurement comprises:
• determining if the second measurement matches the first measurement;
• and
• if the second measurement does match the first measurement, determining that all particles of the sample have passed through the particle separator;
• and
• if the second measurement does not match the first measurement, determining that not all of the particles of the sample have passed through the particle separator.