Topaz Indicator

Brand Family Overview

VaporCoat® recyclable water-based coatings confer high barrier to paper-based packaging and wraps. Most VaporCoat grades are designed for “low MVTR”, to retard water vapor transmission in order to keep perishables fresh, frozen goods intact, or sensitive contents in factory condition. In response to market interest for greater food safety and preservation, additional VaporCoat products can inhibit contaminants ordinarily found in recycled paper from migrating into packaged dry food.

See more VaporCoat products.


An indicator designed to measure the uniformity of the coated substrate.


Indicator solution for Topaz primed sheet substrates

Physical Properties

These physical properties are typical but should not be considered specifications.

AppearanceBluish liquid
Brookfield Viscosity (cps, mPa·s) <50
Spindle Number3

Site of Manufacture (and Product Code)


Application Data

1. Soak a cotton pad with Topaz Indicator solution. 2. Wipe gently across the web on both the coated and non-coated areas of the sheet. The streak should be bluish and consistent in the applied area, showing a contrast with the non-coated area. 3. Color uniformity indicates the application uniformity level.


Ensure adequate ventilation. Keep away from open flames, hot surfaces and sources of ignition. Take precautionary measures against static discharges. To avoid ignition of vapors by static electricity discharge, all metal parts of the equipment must be grounded. Use only in an area containing flame proof equipment. Use personal protective equipment as required.