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Epoxy resin SIka CR81 The epoxy resin is suitable for vacuum infusion but is also ideal for manual lamination. Hardener: CH80-1 Mixing ratio: 100 to 30 Color: transparent, imperceptibly yellowish The viscosity of the mixture, 25 ° C: 460 mPa.S Open time, 25 ° C: 50min Complete curing, 25 ° C: 24-28 h Recommended heating (tempering) at 60-80 ° C. The price is for a set of resin + hardener with a total weight of 1 kg.