Poorly Designed
The flat screen will catch 'gravel', which can be easily observed.<br /><br />However, it will not concentrate the fine 'sand' that comes from taking chanca piedra that dissolves the kidney stones. I have two large 'silent' stones—1/2" and 3/4"—that I'm treating with chanca piedra tea.<br /><br />The paper and screen funnel I have from the hospital is pointed at its bottom. The fine 'sand' is visible after several pass of urine through it. But with the flat bottom of this funnel, it would be nigh impossible to see it without a strong magnification device.<br /><br />It needs to come to a point, where such fine particles can accumulate and be recognizable.
Rating: 1 stars