Salinity Sensor

The Go Direct Salinity Sensor precisely measures the total dissolved salt content of ocean or brackish water. This probe connects via Bluetooth® wireless technology or via USB to your device. Specifications Range of Salinity Sensor: 0 to 50 ppt (0 to 50,000 ppm) Accuracy (factory calibration):+/-1.5 ppt below 35 ppt +/-5.0 ppt above 35 ppt Accuracy (user calibration):+/- 0.5 ppt within user-calibrated range Temperature compensation: automatic from 5 to 35°C, can be turned off Temperature range (can be placed in): 0 to 80°C Description: dip type, abs body, parallel graphite electrodes Dimensions: 12 mm OD and 150 mm length What's included Go Direct Salinity Sensor Micro USB Cable User Manual - GDX-SAL

Shipping in June 2026The Go Direct Air Quality Sensor helps students investigate real‑world questions about the quality of the air we breathe with measurable evidence—right where they live and learn.Designed for high school and college use, this durable sensor supports indoor and outdoor monitoring so students can track pollutants over time, analyze spatial patterns, and connect air quality to human and ecological health.Make air quality tangible, local, and measurable for students. The Go Direct Air Quality Sensor transforms air quality from an abstract concept into measurable evidence in a classroom-ready form. It equips educators and students with the tools needed to investigate pollution scientifically, think systemically, and understand how environmental conditions directly affect human and ecological health—right where they live and learn. Includes 3 AP- and NGSS-Aligned LessonsUsing the Sensor: Learn different channels, remote data collection, and basic analysis. Indoor Air Quality Investigation: Analyze indoor air quality data and develop recommendations to improve it. Traffic and Outdoor Air Quality: Investigate how vehicle traffic affects air pollution. Extended Investigation Ideas Compare indoor and outdoor air quality. Monitor particulate matter near roads, parking lots, or green spaces. Analyze air quality changes during traffic peaks or daily weather shifts. Observe ozone trends on sunny vs. cloudy days. Investigate how different types of cooktops affect CO2 and PM levels. Measures Key Air Pollutants Particulate Matter (PM1, PM2.5, and PM10) Ground-Level Ozone (O3) Nitrogen Dioxide (NO2) Sulfur Dioxide (SO2) Carbon Dioxide (CO2) Volatile Organic Compound Index (VOC Index) Measures Environmental Conditions Temperature Relative Humidity Barometric and Station Pressure Key FeaturesReal-time air quality data collection via Bluetooth® wireless technology Remote data logging for long-term or remote investigations, no connection required Integrated Global Navigation Satellite System (GNSS) allows for geotagging Durable for indoor and outdoor use Remote Data Logging—Go Beyond Wireless Limits! This Go Direct sensor is capable of remote data logging! This feature allows sensors to store data directly to their internal memory—ideal for investigations that extend beyond typical connection ranges like long-term environmental monitoring or rocket launches. It works seamlessly with our award-winning Vernier Graphical Analysis® app so students can visualize their data and make key connections between abstract science concepts and real-world phenomena. Learn more about remote data logging. Rechargeable Battery—Ready When You Are The robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from our award-winning Vernier Graphical Analysis® app, as well as LabQuest® 3. Should the battery run low, simply connect the sensor to the charging cable and keep on collecting—no interruptions or inconvenience to you or your students. Wireless or Wired—The Flexibility to ChooseOur Go Direct sensors connect directly to your mobile device, Chromebook™, or computer using our Vernier Graphical Analysis® app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth® wireless technology, allowing you to choose the best solution for your classroom or laboratory.Go Direct Air Quality has the following channels PM1.0PM2.5PM10CO2NO2SO2O3VOC IndexTemperatureRelative HumidityBarometric PressureStation PressureLatitudeLongitudeAltitudeSpecificationsPM Mass Concentration Specified Range: 0–1000 µg/m3PM1 size range: 0.3–1µgPM2.5 size range: 0.3–2.5µgPM10 size range: 0.3–10µgCO2 Range: 0–5,000 ppmNO2 Range: 0-2000ppb SO2 Range: 0-2000ppbO3 Range: 0-2000ppbVOC Index: 1–500Temperature Range: 10–40℃ (-10℃ min, 50℃ max short term)Relative Humidity Range: 20–80% (10% min, 90% max short term)Station Pressure Range: 260–1260hPaMaximum sampling rate: 1 sample/s

The Conductivity Probe determines the ionic content of an aqueous solution by measuring its conductivity. This has many applications in chemistry, biology, and environmental science. Specifications Range:Low Range: 0 to 200 μS/cm (0 to 100 mg/L TDS) Mid Range: 0 to 2000 μS/cm (0 to 1000 mg/L TDS) High Range: 0 to 20,000 μS/cm (0 to 10,000 mg/L TDS) Typical Resolution:Low Range: 0.1 μS/cm (0.05 mg/L TDS) Mid Range: 1 μS/cm (0.5 mg/L TDS) High Range 10 μS/cm (5 mg/L TDS) Accuracy using factory calibration:±8% of full-scale reading for low range ±3% of full-scale reading for mid range ±4% of full-scale reading for high range Accuracy using custom calibration: ±2% of full-scale reading for each range Response Time: 98% of full-scale reading in 5 seconds, 100% of full-scale in 15 seconds Temperature Compensation: automatic from 5 to 35 °C Temperature Range (can be placed in): 0 to 80 °C Cell Constant: 1.0 cm-1 Description: ABS body, parallel carbon (graphite) electrodes Dimensions: 12 mm OD and 150 mm length What's included Vernier Conductivity Probe 90 mL bottle of 1000 µS/cm NaCl standard solution User Manual - CON-BTA

Use the Turbidity Sensor to measure the turbidity of freshwater or seawater samples and determine water quality. Simple setup and calibration make it easy to use at the collection site or when you return to the classroom. Specifications Range: 0 to 200 NTU Typical Resolution: 0.25 NTU Accuracy: ±2 NTU for readings under 25 NTU ±5% of readings above 25 NTU LED wavelength: 890 nm What's included Vernier Turbidity Sensor 100 NTU turbidity standard One empty glass cuvette Safety Data Sheet for AMCO Clear® 100 NTU Standard User Manual - TRB-BTA