The solid handling ability and flow patterns of a baffleless oscillatory flow coil reactor are investigated and characterized. Previous works in oscillatory flow have been generally conducted in straight channels with various baffled geometries. Solid handling capabilities of the reactor are examined through two reactions, namely, a precipitation reaction and a phase transfer catalysis reaction. In the first reaction, the reactor geometry proved capable of continuously handling liquid-solid suspensions of 5.8 wt % for 5 h and up to 7.9 wt % for 2 h. No signs of clogging were observed during these tests, and the maximum run time of the reactor is currently unknown. However, when gas was formed in the second reaction, rapid system clogging is observed due to a 10-fold decrease in the energy dissipation rate as a result of the pulsation dampening effect by the gas. A broadening of residence time distributions with oscillation intensity is observed and, accordingly, is accompanied by a broadening of solid product particle size distributions. Lower pulsation amplitude and frequencies were capable of keeping solids suspended in the precipitation reaction and may therefore be employed to achieve a tighter residence time and particle size distributions.