Dear customers,
Currently, the printing and shipping of print documents (standards and publications) are delayed.
If available, you may also order the document in digital download format; it is usually available within a few minutes (or within one business day at the latest if manual review is required).
To convert an existing order, please email international@dinmedia.de, including your order number or customer number.
We apologize for the inconvenience and thank you for your patience.
Your DIN Media
Standard [CURRENT]
Product information on this site:
Quick delivery via download or delivery service
All transactions are encrypted
This European test standard specifies a method for the titration and determination of the phosphoric acid content of a hydroalcoholic solution for aerospace applications. This test method is relevant for the determination of total acidity and phosphoric acid content in a reactive thinner of a wash primer or in metal cleaners. This standard EN 4171 has been prepared by ASD-STAN, Technical Section "Non-metallic materials", with the participation of German experts of the Coatings and Coating Materials Standards Committee (NAB) and the Aerospace Standards Committee (NL).