Sample | C (at%) | O (at%) | Zn (at%) | Si (at%) | Ca (at%) | S (at%) | N (at%) | Na (at%) | Cl (at%) |
EPDM50, uncleaned reference | 84.9 | 9.8 | 0.6 | 1.5 | 0.9 | 1.1 | 0.9 | 0.3 | 0.2 |
EPDM50, 1 h US-bath cleaning in a surfactant cleaner solution | 96.9 | 2.1 | 0.1 | 0.4 | - | 0.2 | 0.2 | 0.1 | - |
EPDM50, wiped with acetone | 85.4 | 10.4 | 0.4 | 1.5 | 1.6 | 0.4 | 0.4 | - | - |