---
title: MTRTotalVolatileOrganicCompoundsConcentrationMeasurementMeasurementUnit.PPM
framework: matter
role: symbol
role_heading: Case
path: matter/mtrtotalvolatileorganiccompoundsconcentrationmeasurementmeasurementunit/ppm
---

# MTRTotalVolatileOrganicCompoundsConcentrationMeasurementMeasurementUnit.PPM

## Declaration

```swift
case PPM
```