CPR 603 – Acid Resistant Epoxy Laminating Resin

Typical Uses

  • CPR 603 Acid Resistant Epoxy Laminating Resin is generally used in conjunction with multidirectional roving or other reinforcing mesh. It is also suitable for chemical bunds, effluent tanks, steel or concrete storage tanks, etc.
  • As a clear chemical resistant sealer.

£141.45£348.45 Excl VAT

In Stock
SKU: CPR 603 Category:


Acid Resistant Epoxy Laminating Resin

CPR 603 Acid Resistant Epoxy Laminating Resin is a high performance two pack Epoxy resin, having exceptional resistance to aggressive acids, solvents and alcohols e.g. 96-99% Sulphuric acid, Methyl Ethyl Ketone, and Methanol.

The product has a low viscosity and rapid curing characteristics, even at low temperatures.

Typical Properties

  • Outstanding chemical resistance
  • Tough, durable and abrasion resistant
  • Excellent mechanical properties
  • Clear, but may be readily pigmented
  • Low temperature cure
  • Rapid curing characteristics
  • Convenient 2:1 volume mix (Base to Curing Agent)

Directions for Use

Surface Preparation Concrete

  • Concrete shall be a minimum of 21 days old and/or the residual moisture content shall be below 6%.
  • Ensure that the concrete is clean and free from dust, laitance, grease, oil, curing compound and existing paint finishes, etc.
  • Blow holes and defective concrete shall be made good using a proprietary repair compound e.g.  CPR 719 -Epoxy Concrete Patch Repair Mortar or CPR 726 Concrete Re-surfacer.
  • Suitable mechanical treatment such as vacuum grit blasting is the preferred treatment prior to application as this ensures a mechanical ‘key’ for the coating.

Surface Preparation Steel

  • Steel surfaces shall be grit blasted to a nominal Sa 2.5 Swedish standard.
  • All dust and grease shall be removed prior to coating application.


  • Pour the contents of the CURING AGENT container into the BASE container and thoroughly mix, preferably by mechanical means until a uniform colour is achieved.


  • Wet out the substrate with CPR 603 Acid Resistant Epoxy Laminating Resin, applying by brush or roller.
  • Soak the reinforcement mesh with CPR 603 Acid Resistant Epoxy Laminating Resin and apply to the wetted out substrate.
  • Ensure that no air is occluded, spike rollering if necessary.
  • Wet out any dry spots with more mixed resin.
  • Should a coloured finish be required, then a suitable pigment may be incorporated prior to application.
  • A clear top coat may be applied following curing of the underlying system.

Equipment Cleaning


  • Allow to cure for a minimum of 4 hours @ 20°C prior to overcoating or light foot traffic.
  • Allow a minimum of 5 days cure @ 20°C for optimum chemical resistance.

Storage and Shelf Life

  • Store in dry conditions between 10°C and 25°C.
  • Do not expose to freezing conditions.
  • CPR 603 Acid Resistant Epoxy Laminating Resin has a minimum shelf life of 12 months when stored in accordance with manufacturer’s instructions.


  • CPR 603 Acid Resistant Epoxy Laminating Resin is supplied in 5kg, 15kg and 75kg packs.


  • Dependent upon type of mesh reinforcement and substrate profile, but typically in the range of 0.5kg to 1.5kg/m² overall.

Technical Data

  • Colour: Pale Straw
  • Volume Solids: 99.8%
  • Pot life @ 20°C: 30 minutes
  • Pot life @ 10°C: 60 minutes
  • Tack free time@20°C: 2 hours
  • Hard Dry time @ 20°C: 4 hours
  • Full Chemical Resistance @ 20°C: 5 days
  • Adhesive strength to concrete: 4.1MPa (concrete failure)
  • Adhesive strength to steel: 15 MPa
  • Temperature range during application: 2°C to 35°C
  • Temperature range during service: -20°C to 70°C
  • Chemical Resistance Guide available upon request. Otherwise please consult our Technical Department for


  • Do not apply to wet or uncured concrete.
  • Do not apply at temperatures below 2°C, where dew point is within 5°C of air temperature, or where relative humidity exceeds 85%.

Health and Safety

  • Avoid contact of the material with skin and eyes.
  • Wear gloves and goggles.
  • Wash off splashes immediately with soap and water.
  • Any eye contamination must be rapidly irrigated with copious amounts of clean water, and immediate medical attention sought.
  • Please refer to Material Safety Data Sheet for additional information.
  • CPR Acid Resistant Epoxy Laminating Resin shall be applied strictly in accordance with the manufacturer’s instructions.
  • For specific advice regarding any aspect of this product, please consult our Technical Department.


Legal Notice

Whilst all reasonable care is taken in compiling technical data on the Company’s products, all recommendations or suggestions regarding the use of such products are made without guarantee, since the conditions of use are beyond the control of the Company.

It is the customer’s responsibility to satisfy himself that each product is fit for the purpose for which he intends to use it, that the actual conditions of use are suitable and that in the light of our continual research and development program the information relating to each product has not been superseded.


Additional information

Weight N/A

15kg, 5kg, 75kg


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