D.E.R. 331 Epoxy Resin is the most widely used general purpose liquid epoxy resin. It is recognized as the standard from which many variations have been developed.

(Bisphenol A diglycidyl ether) WPE: 525-550

Higher MW epoxy resin cured by amine catalyst, used for embedding.

(Bisphenol A diglycidyl ether) WPE: 185-192

Epon^® Resin 828 is a standard epoxy resin used in formulation, fabrication and fusion technology. Widely used for embedding and potting. When cross-linked or hardened with appropriate amine curing agents, very good mechanical adhesive, dielectric and chemical resistance properties are obtained.

From this value, one determines the optimum amount of DDSA or NMA in grams to combine with 100 grams of resin for stoichiometric balance, minimizing unreacted starting materials and producing reproducibly stainable, sectionable embedding blocks. Exact WPE value for each lot of Araldite resin is on the label of each container.

Grade: 732 WPE: 305 - 33 (Weight Per Epoxide equivalent)

WPE is Weight Per Epoxide equivalent. From this value, one determines the optimum amount of DDSA or NMA in grams to combine with 100 grams of resin for stoichiometric balance minimizing unreacted starting materials and producing reproducibly stainable, embedding blocks.