Why do the mu and micro symbols appear as alpha or infinity symbols when I view my manuscript PDF Proof file?
Verify that the Greek characters in your Word document were created using Symbol font.
Set 'Automatically update styles on open' to "off". To set styles to "off' Go to Tools>Templates>Add-ins and uncheck the box and save the document.
If the problem still exists, the issue may be with your version of Adobe Acrobat Reader, which should be version 7 or later. You can download the latest version from Adobe. After installing, re-open your manuscript PDF proof. Your symbols should now display properly.
If you continue to experience problems contact the ACS Customer Services and Information at firstname.lastname@example.org