| http://www.w3.org/ns/prov#value | - Suspendability is measured at room temperature by mixing a solution of 2 ml of particles in 5 ml of saline and 5 ml of contrast solution (Omnipaque 300, Nycomed, Buckinghamshire, UK) and observing the time for about 50% of the particles to enter suspension, i.e. not sink to the bottom or float to the top of a container (about 10 ml, 25 mm dia vial).
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