Hi, I am looking for the origin of our formalin-formula. Perhaps someone out there has a similar recept or knows the reference. 8% buffered formaldehyd: 200 ml 36-40% Formaldehyd + 200 ml 0,0342 M Phosphatbuffer pH 7,8 + 600 ml Aqua dest.; pH = 7,4 Thanks in advance Gudrun Lang