Derbiflash RS 233 SL Mortar is two component, rapid curring, polymethyl-methacrylate (PMMA) resin based mortar designed for use as a repair and levelling mortar for Derbiflash RS Systems. Derbiflash RS 233 Self-Leveling Mortar requires combining one container of Derbiflash RS 210 (10 kg) with one bag of Derbiflash RS 223 Mixing Powder (23 kg) creating a 33 kg work pack.