"Vernier Sensors"
Vernier® Go Direct™ Conductivity Probe
The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity.
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Vernier® Go Direct™ pH Sensor
A general-purpose pH sensor used to monitor pH of aqueous solutions.
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Vernier® Go Direct™ Potassium Ion-Selective Electrode
The Go Direct Potassium Ion-Selective Electrode (ISE) can be used to measure the concentration of potassium (K+) ions in aqueous solutions.
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Vernier® Go Direct™ Nitrate Ion-Selective Electrode
The Go Direct Nitrate Ion-Selective Electrode (ISE) can be used to measure the concentration of nitrate (NO3-) in aqueous samples.
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Vernier® Go Direct™ Photogate
Go Direct Photogate is a double-gate sensor that includes two photogates built into the arms of the sensor, which accurately measures velocity and acceleration.
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Vernier® Go Direct™ Ammonium Ion-Selective Electrode
The Go Direct Ammonium Ion-Selective Electrode (ISE) can be used to measure the concentration of ammonium (NH4+) in aqueous samples.
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Vernier® Go Direct™ Voltage Probe
The Go Direct Voltage Probe combines a wide input voltage range and high precision, making it an excellent choice for investigations of both AC/DC circuits and electromagnetism.
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Vernier® Optical DO Probe Metal Guard
The Optical DO Probe Metal Guard protects the Vernier Optical DO Probe and the Go Direct Optical DO Probe cap when taking measurements in the field and helps weigh down the probe when submerged.

