EM grade, purified
A fast penetrating E.M. fixative in combination with other fixatives.
Paraformaldehyde is the condensation product of methylene glycol, a substance not so far isolated in its pure form; it is a white solid with a formaldehyde content between 78 and 98% and is supplied either as a Prill or Granular - ask. All forms contain more than 95.5% paraformaldehyde content. The Prill and Granular forms are small, free-flowing, dust-free beads, the most desired by EM users. A fast-penetrating EM fixative used in combination with Glutaraldehyde, Acrolein, and Osmium Tetroxide.
Karnovsky, M.J., J. Cell Biol., 27, 137A (1965).
Glauert, A. Pract.Methods in E.M. Vol.3 North-Holland Pub. (1974)
Hayat, M.A. PrinciplesandTech., of EM (Univ. Park Press), 68 (1981)
See also C004 prepared paraformaldehyde.
Paraformaldehyde solutions are listed (on page C4) as Formaldehyde
Shipping GA within Australia now costs real money - we suggest switching to prepared Paraformaldehyde