The adapters have a slotted floating zirconia sleeve and are suitable for accepting fibre optic connectors with zirconia ferrules.
They comply with the requirements of the IEC 61754 family of standards.

Launch cables are necessary for optical performance testing/measurement of fibre optic connections with an OTDR.

The cleanliness of FO connectors is critical for satisfactory optical performance and long-term trouble-free transmission. Connectors that are dirty, worn or scratched due to improper use will have a negative effect on optical performance...