Specific by design
An enzyme layer reacts only with nitrite, even in marine or murky water.
Electrochemical sensing for water
Lab-grade from one drop.
NS2 measures nitrite, nitrate and ammonium with a handheld reader, single-use electrochemical sensor strips and an app.
The science behind the sensor
Biology for specificity, electrochemistry for speed
Patent protected
European patent granted.
Turbidity-free
We measure an electric current, not a color, so cloudy water doesn't distort results.
Peer reviewed
More than 25 years of published research behind every sensor strip.
Technology
Reader, sensor strips, app
Three parts, one workflow: add a drop, read the result, keep the record.
01
Reader
A compact handheld electrochemical reader.
- Pocket-sized and rugged
- Reads every NS2 sensor strip
- Pairs with the app
- Electrochemical measurement, lab-grade results
- Battery-powered for use in the field
02
Sensor strips
Single-use electrochemical sensor strips, one per analyte. One drop is enough.
- Nitrite, nitrate and ammonium
- Freshwater and Marine variants
- A single drop per test
- Pre-calibrated, no reagents to mix
- Individually sealed pouches
03
App
Results, history and export on your phone.
- Guided measurement
- Sample history and notes
- Export for reporting
- Results logged by sample and site
- Connects to the reader via Bluetooth
Perspectives on water
Latest insight
Interviews
Lab-grade from one drop: NS2's plan for North America
We sat down with NS2 co-founder Gabriela Almeida to talk about why North America, why now, and what lab-grade from one drop means for water testing there.
Read moreField experience
Validated across freshwater, Marine, shrimp and RAS sites in Portugal and with European partners.
North America
NS2 is bringing lab-grade nitrogen sensing innovation to the North American market. Our products are sold there as Specio Analytics, launching January 2027.
Visit Specio (opens in a new tab)
