How do you identify the qualified fire retardant MDF from a bad one?

Answer 1

Actually, to figure out if your fire retardant MDF is up to standard

is not that hard. I would love to help you settle this problem.

There are four simple ways to identify the MDF.

Firstly, touch the board and see if the surface is smooth or not;

Secondly, to cut a small piece(diameter 2-3mm) with a blade and

then light it laterally. The class C should be no problem if the

piece extinguish by itself without smoldering in five seconds.

Within 2 seconds, the piece extinguishes without smoldering after

being lit vertically, then it is up to Grade B standard.

Thirdly, you may pinch the core board with your nails to see it is

hard or soft. And then to observe if the surface layer is easily

peeled off by pinching up against the position near to the panel

with your fingernails.

Fourthly, put a small piece of the template into the cold water

soak for 24 hours, observing the thickness change. After that,

dry it naturally and observe the deformation situation of the plate

surface. This is the most critical step to get the answer.