You will find sellers online offering a "DIN 53505 PDF" for $20. This is usually a scanned, unsearchable historical copy. For legal compliance today, you need ISO 7619-1:2010 (or the latest amendment). If your contract strictly says "DIN 53505," you must negotiate with your client to accept ISO 7619-1, as the former is obsolete.
| Scale | Repeatability (r) | Reproducibility (R) | |-------|------------------|----------------------| | Shore A | 1.5 Shore points | 3.0 Shore points | | Shore D | 2.0 Shore points | 4.0 Shore points | din 53505 pdf
While newer standards exist, some engineers believe that older standards contained specific nuances regarding sample preparation that are critical for certain applications. For example, the specific requirements for the thickness of the test specimen and the surface finish were clearly outlined in the DIN standard. You will find sellers online offering a "DIN