chemical 60 in stock
Chemical Sensors at Circuitrocks — Gas, Air & Water Quality Monitoring
Build reliable environmental monitors with chemical sensors for gases (CO, LPG, smoke, alcohol), air quality (VOC/CO₂/PM), and water chemistry (pH, EC/TDS, ORP, DO, salinity). Compatible with Arduino, ESP32, and Raspberry Pi.
Gas (MQ series) • VOC/CO₂/PM • pH/EC/ORP/DO • TDS & Ammonia • I²C/UART/Analog
Why choose these sensors
- Wide coverage from hobby gas detectors to lab-grade water probes
- Easy integration via I²C/UART/analog with rich libraries
- Scalable for classrooms, farms, aquaculture, and industry pilots
What you can build
- Indoor air-quality dashboards (CO₂/VOC/PM)
- Hydroponics & aquarium controllers (pH, EC, DO)
- Gas leak/smoke/alcohol alerts (MQ series)
Recommended add-ons
- Displays (OLED/TFT) & cables
- Stable power & isolation (avoid noise/ground loops)
- Enclosures & waterproof glands for probes
Featured categories
Gas & Air Sensors
- MQ series (LPG/CO/smoke/alcohol/VOC)
- CO₂ (NDIR) modules
- Dust/PM2.5 sensors
- VOC/TVOC & air-quality
Water Quality
- Atlas Scientific (lab-grade pH/EC/ORP/DO)
- TDS/EC & salinity
- pH probes & modules
- Ammonia (NH₃) & specialty
Interface & Accessories
Tip: Calibrate regularly. Water probes often require temperature compensation; use an RTD/thermistor input when available.
Starter bundles
FAQ
Are these compatible with Arduino/ESP32/Raspberry Pi?
Yes. Most modules expose I²C, UART, or analog outputs with available libraries/examples.
Do gas sensors need burn-in or calibration?
Yes—MQ sensors typically need minutes to hours of burn-in and periodic calibration. Follow each product’s datasheet.
How do I maintain pH/EC/DO probes?
Use proper storage solutions, rinse (don’t wipe) pH glass, and re-calibrate with fresh standards. Add temperature compensation where supported.
Do you ship nationwide?
Yes—fast shipping anywhere in the Philippines. Same-day processing on in-stock orders before cutoff.
Explore related: All Sensors • Atlas Scientific • Arduino • ESP32/ESP8266 • Raspberry Pi • Power & Isolation • Enclosures
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