1. Judging the filter plate of diaphragm filter press is good or bad, we must first see whether the whole of the filter board is complete, whether the surface is smooth, the filter plate can not have any broken marks or defects, especially the diaphragm filter plate edge part, the requirements must be very flat and smooth, because it is the most important part of the diaphragm pressure Filter Filter Chamber sealing, can not have any problems.
2. Smell the filter plate. Good diaphragm press Filter plate itself is not with any pungent or strong odor, only with a hint of polyethylene odor, as long as not pay attention to smell, is not smell.
3. Touch, good filter plate in the touch up, can not have any dust to take out, vinyl will be on the surface of the filter plate form a thin layer, it will look like Jade, but will be much less.