Is there any product information or certificates that indicate that the substances used in the edding 8030 NLS high-tech marker are below a certain ppm (parts per million)?

The ink of the e-8030 has been studied some time ago. Based on the results, we can confirm the following values for the ink: Cu < 5 ppm Zn < 5 ppm Cd < 5 ppm Sn < 10 ppm Pb < 10 ppm Bi < 1 ppm Na < 70 ppm F < 100 ppm Cl < 100 ppm Br < 50 ppm I < 50 ppm S < 100 ppm C < 1 ppm

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