> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/library-preparation/general/library-preparation-general-reference_material-list/000002230.md). # i7 and i5 indexes in each Nextera XT index kit This article lists the i7 and i5 indexes in each Nextera XT index kit. \ | Index kit | Catalog # | Indexes | | ------------------------------------------------------- | ----------- | -------------------------------------------------------------------- | |

Nextera XT Index Kit v2
Set A

| FC-131-2001 |

N701-707, N710-712, N714-715,
S502-503, S505-508, S510-511

| |

Nextera XT Index Kit v2
Set B

| FC-131-2002 |

N716, N718-724, N726-729,
S502-503, S505-508, S510-511

| |

Nextera XT Index Kit v2
Set C

| FC-131-2003 |

N701-707, N710-712, N714-715,
S513, S515-518, S520-522

| |

Nextera XT Index Kit v2
Set D

| FC-131-2004 |

N716, N718-724, N726-729,
S513, S515-518, S520-522

| |

Nextera XT Index Kit,
24 Indexes

| FC-131-1001 |

N701-706,
S502-504, S517

| |

Nextera XT Index Kit,
96 Indexes (obsolesced)

| N/A |

N701-712,
S502-508, S517

| The sets A-D contain 96 indexes and there is enough volume for 384 samples (each index combination can be used 4 times). Similarly, for the 24 index kit, there are 24 index combinations with enough volume to use each 4 times, for 96 reactions. \ \ \
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