# 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                                                              |
| ------------------------------------------------------- | ----------- | -------------------------------------------------------------------- |
| <p>Nextera XT Index Kit v2<br>Set A</p>                 | FC-131-2001 | <p>N701-707, N710-712, N714-715,<br>S502-503, S505-508, S510-511</p> |
| <p>Nextera XT Index Kit v2<br>Set B</p>                 | FC-131-2002 | <p>N716, N718-724, N726-729,<br>S502-503, S505-508, S510-511</p>     |
| <p>Nextera XT Index Kit v2<br>Set C</p>                 | FC-131-2003 | <p>N701-707, N710-712, N714-715,<br>S513, S515-518, S520-522</p>     |
| <p>Nextera XT Index Kit v2<br>Set D</p>                 | FC-131-2004 | <p>N716, N718-724, N726-729,<br>S513, S515-518, S520-522</p>         |
| <p>Nextera XT Index Kit,<br>24 Indexes</p>              | FC-131-1001 | <p>N701-706,<br>S502-504, S517</p>                                   |
| <p>Nextera XT Index Kit,<br>96 Indexes (obsolesced)</p> | N/A         | <p>N701-712,<br>S502-508, S517</p>                                   |

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, hence 96 reactions.

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