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Nice color blindness book with nice illustrations for testing and demonstrating color blindness. Both numbers and figures appear in the book.
Text in both Chinese and English.
Vials contain a vacuum-sealed color forming reagent to test a variety of water quality parameters. 30 individual Total Hardness test vials.
Easily measure heart rate before, during, and after exercise with the data transmitted wirelessly to your devices.
Set of 5 clear PVC taps for water flow visibility when designing and constructing pipe networks. For use with an Absolute Pressure Sensor.
This is a Bluetooth, handheld science datalogger that lets students connect multiple wired and wireless sensors, collect data, generate live graphs, and perform data analysis.
This small plastic bottle is designed to allow simultaneous sensor measurements of oxygen gas and carbon dioxide gas.
The PASPORT Breath Rate Sensor uses a disposable dust mask to measure breath rate. For use with PASPORT Interfaces.
Vials contain a vacuum sealed color forming reagent to test a variety of water quality parameters. 30 individual Ammonia test vials.
The PASPORT Salinity Sensor works with the included Salinity Sensor Probe to measure salinity, conductivity and temperature.
Allows students to measure temperature by detecting emitted infrared from objects without contact. For use with PASPORT Interfaces.
Vials contain a vacuum sealed color forming reagent to test a variety of water quality parameters. 30 individual Phosphate test vials.
