Busse Hospital Disposables, Inc. Calculi Strainer, 25/bg, 4 bg/cs. Disposable, durable white plastic construction. Rinsable plastic allows one patient to use strainer for several days. Fits all 24-hour specimen collection containers. Mesh screen is optimal size for filtering the smallest stones while allowing unobstructed flow-through. Built-in tab for easier handling and sanitary conditions.