Provides excellent penetration for embedding biological tissues and rapid infiltration. Easy to prepare. The hardness is adjusted by changing the proportion of the flexibilizer (DER 736). The blocks have good trimming and sectioning qualities. Thin sections are tough under the electron beam.
Spurr, A.R., (1969) J. Ultrastruct. Res. 26, 31-42
| Kit consists of: |
| 450 ml NSA |
| 225 ml ERL 4221 |
| 225 ml DER 736 |
| 25 ml DMAE |
Note: 15000 has been replaced by 15004 ERL 4221(An ERL-4206 Replacement)
Technical Tips
Embedding Resin Stain Permability
Low Viscosity Kit Formulation with ERL 4221