The new revision of ISO 4309:2017 was prepared by Technical Committee ISO/TC 96, Cranes, Subcommittee SC 3, Ropes.

This fifth edition cancels and replaces the fourth edition ISO 4309:2010, which has been technically revised and contains the following changes:
- magnetic rope test (MRT) methodology and discard criteria are introduced, as an aid to the internal inspection of wire ropes;
- guidance is given on when to use magnetic rope testing and how to combine its results with other inspection results;
- an example of an MRT report is provided.
INTRON PLUS is global supplier of equipment for MRT, which complies with requirements of ISO 4309:2017.