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PPG Sigma Etch/ T Wash - Etching Solution
  • PPG Sigma Etch/ T Wash - Etching Solution

PPG Sigma Etch/ T Wash - Etching Solution

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£35.63
Tax excluded
£42.76 Tax incl.

PPG - Sigma Etch/ T Wash is a phosphoric acid based etching solution for treating new unweathered galvanised surfaces prior to painting.

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PPG - Sigma Etch/ T Wash is a phosphoric acid based etching solution for treating new unweathered galvanised surfaces prior to painting.

Features

  • For pretreatment of new galvanized steel where blasting or abrasion is not possible.
  • May be overcoated with a wide rang of protective coating systems.
  • May be used to give adhesion of high-temperature coatings to new galvanized steel.
  • Changes color on application from blueto black to indicate the effectiveness of primary pretreatment.
  • Meets the requirements of British Rail's 'T-wash' Solution
  • Not recommended for immersed conditions.

Instructions For Use

  • Mix thoroughly before application
  • Over-application will produce a dense black powdery layer which is unsuitable for the application of top coats.
  • Such areas will require either abrading or washing to remove powdery deposits otherwise the adhesion of topcoats will be adversely affected.

Surface Preparation

  • Galvanized surfaces are variable and the preferred method of treatment is to lightly sweep blast followed by degreasing and cleaning.
  • Remove all rust, dirt, moisture, grease or other contaminants from the surface.
  • Any traces of soluble zinc salts should be removed by abrading and washing.
  • Washed with fresh water to remove emulsified residues, dirt and other contaminants.
  • Surfaces which following application do not uniformly blacken, indicate insufficent primary surface preparation and these should be re-prepared by abrading.

Application Method

Brush recommended, apply at 15.0m²/l (611ft²/US gal)

Roller is suitable

Recommended thinner

  •     No extra thinner is necessary


Note:

    If however application results in a black powdery surface then Sigma Etch can be diluted with tap water

PPG Paints
PPG-SE

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PPG Sigma Etch/ T Wash - Etching Solution

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PPG Sigma Etch/ T Wash - Etching Solution

PPG Sigma Etch/ T Wash - Etching Solution

£35.63
Tax excluded
£42.76 Tax incl.