# pH meter

> instrument that indicates acidity or alkalinity in water-based solutions, expressed as pH

**Wikidata**: [Q300965](https://www.wikidata.org/wiki/Q300965)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/PH_meter)  
**Source**: https://4ort.xyz/entity/ph-meter


## References

1. Freebase Data Dumps. 2013
2. Quora
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)