4 fluidity of glue, like a patho, will show the correctness of its mixing. Let the glue stand for a few minutes. The viability of urea formaldehyde glue is from 10 to 20 minutes, after which it becomes too thick and unsuitable.
4 fluidity of glue, like a patho, will show the correctness of its mixing. Let the glue stand for a few minutes. The viability of urea formaldehyde glue is from 10 to 20 minutes, after which it becomes too thick and unsuitable.
