09 October 2020 9 3K Report

For porosity measurement I am using the following equation:

Percent porosity = (M2 - M1) / pV  × 100

Where M1 and M2 are the mass of the hydrogel before and after immersion in absolute ethanol, respectively; p is the density of absolute ethanol and V represents the volume of the hydrogel.

I am confused about how to measure 'V' volume of hydrogel?

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