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# Different SILMAR polyester resins, which one to choose?

SIL249-BLH resin is very effective for use with conventional PMEK catalyst and for laminating colorless boards. The bluish optical brightener it contains makes your board appear whiter.

The same goes for SIL249-BB resin containing more optical brightener for a “whiter than white” result.

Prefer the “classic” SIL249-A resin in the case of use with the addition of pigments (tinted resins), or in the case where you have chosen to work with a UV catalyst


${youtube}[Silmar Polyester resin](g85CWPadUXI)