# Question #05e15

The typical size of a colloidal particle is approx. $1 \times {10}^{-} 9 \cdot m$ to $1 \times {10}^{-} 6 \cdot m$. A typical frit porosity is approx. $5 \times {10}^{-} 6 \cdot m$. The attempt to filter a colloid thru such a frit would thus be unsuccessful.