De or het emulsielaag?

The correct Dutch article is:

de emulsielaag

How to use emulsielaag

the emulsielaagde emulsielaag
this emulsielaagdeze emulsielaag
that emulsielaagdie emulsielaag
our emulsielaagonze emulsielaag
your emulsielaagjouw emulsielaag
every emulsielaagelke emulsielaag
which emulsielaag?welke emulsielaag?
a big emulsielaag / the big emulsielaageen grote emulsielaag, de grote emulsielaag