# Specifications for the MiSeq

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\\\* Total time includes cluster generation, sequencing, and base calling on a MiSeq System enabled with dual-surface scanning.\
**Note**: Output is measured in Gb (Gigabases) or Mb (Megabases).

**Reads Passing Filter**\
Install specifications based on Illumina PhiX control library at supported cluster densities (1000-1200 k/mm2 raw cluster density for v2 chemistry and 1200-1400 k/mm2 raw cluster density for v3 chemistry). Actual performance parameters may vary based on sample type, sample quality, and clusters passing filter.\
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**Quality Scores**\
A quality score (Q-score) is a prediction of the probability of an error in base calling. The percentage of bases ≥ Q30 is averaged across the entire run. ![](https://761066130-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGM9W2DuBTgEXv1ClCm8H%2Fuploads%2Fgit-blob-dd68642d411da9056c8734d9ba69b8ba9bbb3a58%2Fimage3.png?alt=media\&token=7dcb8b95-51a5-4ce2-b34c-60f2b73ce7d7)

**Imaging**\
The number of tiles and surfaces for each kit type.

| **Kit Type**   | **Number of Tiles** | **Surfaces imaged** |
| -------------- | ------------------- | ------------------- |
| v2 Standard    | 14 tiles            | Dual surface        |
| v2 Micro       | 4 tiles             | Dual surface        |
| v2 Nano        | 2 tiles             | Single surface      |
| v3 Standard    | 19 tiles            | Dual surface        |
| v3 VeriSeq-PGS | 19 tiles            | Dual surface        |

This information is also available on the [Illumina MiSeq Specifications page](https://www.illumina.com/systems/sequencing-platforms/miseq/specifications.html), and a PDF version, here [MiSeq System Specifications Sheet](https://www.illumina.com/downloads/miseq-system-specification-sheet-m-gl-00006.html).

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