Provided herein are devices and related methods for rapidly freezing a sample using, for example, liquid nitrogen. The device includes an input portion with an input port, a sample chamber, a waste reservoir in fluid communication with the sample chamber, and a filtering mechanism that selectively allows a fluid introduced through the input port to pass through the sample chamber and into the waste reservoir, while retaining a sample within the sample chamber. The sample chamber, waste reservoir, and filtering mechanism are configured to draw fluid from the sample chamber through the filtering mechanism and into the waste reservoir via capillary action.
