Learning Center

Plain-language explanations of the measurements, sensors and numbers behind environmental monitoring.

They count light, not mass, and each converts with its own assumptions.

Ultrasonic humidifiers turn dissolved minerals into fine dust. Evaporative ones do not.

Hot oil, searing and toasting generate fine aerosol. Cooking is the biggest particle source in most homes.

PM1 is the sub-micrometer fraction: combustion soot and the particles that reach the bloodstream.

Small volume, many sources, slow exchange. The math of a building explains the numbers.

Sprays spike VOCs, dusting spikes particles, and the monitor sees both before you smell them.

A single candle can push PM2.5 past outdoor smoke levels in a small room. CO₂ barely notices.

Gas hobs and ovens produce CO₂ directly. Electric cooking barely moves the number.

Each person adds a predictable amount. The curve a monitor draws is an occupancy counter.

Range is how far the instrument can read. Resolution is the smallest step it shows. Neither is accuracy.

Precision is repeatability. Accuracy is truth. A spec sheet can promise one without the other.

Every sensor slowly changes its answer to the same question. Drift is the rate, and calibration is the cure.