Sigma Etch (T Wash)

This product has been discontinued; for an alternative product please look at; Guard T Wash

Description

Phosphoric acid-based etch solution for treating new, un-weathered galvanized surfaces prior to painting

Principal Characteristics

• • For pre-treatment of new galvanized steel where blasting or abrasion is not possible

• • May be overcoated with a wide range of protective coating systems

• • May be used to give adhesion of high-temperature coatings to new galvanized steel

• • Changes color on application from blue to black to indicate the effectiveness of primary pretreatment

• • Meets the requirements of British Rail's 'T-wash' solution

• • Not recommended for immersed conditions

Colour and Gloss Level

• • Pale blue solution, which turns gray-black on application to clean galvanized surfaces