# Specifications for the MiSeq
\\\* 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.\
**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. 
**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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| *For any feedback or questions regarding this article (Illumina Knowledge Article #1670), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000001670%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |
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