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Introducing ASTM D589 - Industrial Physics

ASTM D589 is a global ASTM testing method to measure the opacity of paper samples. 

Knowing the opacity level of your paper products is essential if you want to keep your print clear, crisp and legible. Luckily, with the right opacity testing equipment you can make sure your opacity is just as it should be. 

What is opacity testing? 

Opacity is a paper property. It refers to how translucent or see through a sheet of paper is. A high opacity means that the paper is not very see-through and it’s easy to read print on the page, without the distractions of marking from the other side showing through. 

This ASTM opacity testing method employs 15° diffuse geometry, illuminant A/2° and 89% reflectance backing or paper backing. The opacity of a sheet of paper can be affected by its basis weight as well as any added filler or coating materials. 

ASTM D589 testing equipment

So, how can Industrial Physics improve your ASTM D589 testing?  

TEST/Plus® TAPPI Opacity 

This reliable opacity testing machine is a fully automated option that has an integrated touchscreen for easy operation. It includes one opal glass calibration tile and one set of paper calibration as standard. Our opacity tester gives you a reliable way to determine whether you are still meeting industry opacity testing specifications when adding pigments and dyes to paper samples. 


PROFILE/Plus® TAPPI opacity 

This precisely accurate opacity testing machine will evaluate the opacity of your paper samples to ASTM D589 and TAPPI test standards. It’s an automatic opacity tester so that you can be sure of precise alignment and controlled loading of your paper samples.

PROFILE/Plus® TAPPI Opacity Calibration and Verification Kit 

The opacity testing calibration and verification kit is designed for use with PROFILE/Plus TAPPI opacity. It comes with a traceability certificate. 


Need ASTM testing solutions? Get in touch

If you’d like to learn more about opacity testing then why not visit our blog on the subject by clicking here? 

Join the thousands of companies around the world who have seen the light with our fantastic range of opacity testing devices. Learn more about the best option to suit your paper type and business needs and get in touch today!

Contact us - Industrial Physics 

Your global test and inspection partner for ASTM D589