The diaphragm is made of a porous mixture of asbestos and polymers. It must be a permeable asbestos based diaphragm is used to separate the anode products from the cathode products.
There are two types of diaphragm cells
- Mesh type - mesh type diaphragm cell anode ( box type anode )
- Plate type ( perforated ) - perforated plate diaphragem cell ( electrolyzer ) anodes
I requested more detail from one of my contact and I will post it here once I got more details.