Opacity of paper or board

This method is used to determine the opacity (paper backing) of paper by diffuse reflectance.

The test is suitable for papers and boards that contain fluorescent whitening agents, as long as the UV content of the radiation incident on the test piece has been adjusted using a fluorescent reference standard as described in ISO 2470‑1. The method is not suitable for colored paper or cardboard that contains fluorescent dyes or pigments.

Suitable sample matrices
Paper and board
Typical turnaround time
3 weeks after receiving the samples
Available quality systems
Accredited test method
Device types

Order this test online

First sample (Excl. VAT):
176 €
Additional samples (Excl. VAT):
64 €per sample
If you have a large number of samples, contact us for a possible discount.

Samples are entered during checkout.

Our experts review all orders to ensure the testing method is suitable for your needs and samples.

Large number of samples or specialized needs?

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Questions? We're happy to help.

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