TDG-F-05-93 inlet valve cleanliness test has been back in test development status since October 2021.

The group decided by consensus at the September 2025 meetings in Vienna to close the group. This was approved by the CEC MB in December 2025.

• CEC-F-20 is proposed as alternative

• The latest version of the method shall remain available at the CEC website as historic document for former group members

• Group´s documents shall remain available for 10 years to meet documentation requirements of quality documents of IEC/ISO17025