• M.E.K.P. Catalyst
  • 15ml M.E.K.P. Catalyst
  • 60ml M.E.K.P. Catalyst
  • 250ml M.E.K.P. Catalyst
  • 500ml M.E.K.P. Catalyst
  • 1 liter M.E.K.P. Catalyst
  • 3.63kg M.E.K.P.

M.E.K.P. Catalyst




Methyl Ethyl Ketone Peroxide is an organic peroxide needed to initiate the cure of polyester resins and gelcoats.
See below for corresponding resin quantities to go with each size of catalyst:

Catalyst SizeResin Size
15ml1 Liter
60ml4 Liter
250mlup to 5 Gallon
500ml2 x 5 Gallon
1 Liter4 x 5 Gallon
3.63kg1 Drum

The table below contains the catalyst chart when using MEKP to catalyze Polyester Resins & Gelcoats. The MEKP Catalyst must be used or the resin or gelcoat will not cure.


Catalyst Volume25°C20°C15°C10°C
10 ml per litre or 10 drops per oz.30 min.2 hr.4 hr.
15 ml per litre or 15 drops per oz.30 min.2 hr.4 hr.
20 ml per litre or 20 drops per oz.40 min.2 hr. 

NOTE: Working time is approximately 25% of above cure times. Avoid working in extreme temperature or direct sunlight.

WARNING: MEKP Catalyst is a hazardous substance. Use with extreme caution. Contact with eyes may cause blindness. In case of contact, flush with water, consult physician immediately. Vapour is harmful, use adequate ventilation during application.

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