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Go Direct® pH Sensor

Go Direct® pH Sensor

Go Direct® pH
Acid-base titration

Acid-base titration

Go Direct® pH Sensor

Starts at $109.00

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions. It connects via Bluetooth® wireless technology or via USB to your device.

Save money when you purchase the Go Direct pH Teacher Pack, which includes 8 Go Direct pH Sensors and a Go Direct® Charge Station.

ORDER CODE: N/A Categories ,
$109.00   Order Code: GDX-PH
$933.00   Order Code: GDX-PH-TP

The Go Direct pH Sensor is an important and versatile sensor for lab and field activities alike. It gives students the freedom to explore pH without the inconvenience of wires‚ no more spilled solutions or dangling wires. The Go Direct pH transmits live readings and captures data in real-time.

Use this sensor in a variety of experiments:

  • Conduct acid-base titrations.
  • Monitor pH change during chemical reactions.
  • Test the pH and alkalinity of bodies of water.
  • Investigate household acids and bases.

This sensor is comprised of a pH electrode connected to a Go Direct Electrode Amplifier via a BNC connector. This design enables you to use the Go Direct Electrode Amplifier with other Vernier electrodes, such as the Flat pH Electrode, ORP Electrode, ISE electrode, or a third-party electrode.

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 Choose

Our 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 pH Teacher Pack

Purchase a Go Direct pH Teacher Pack to receive a discount on 8 Go Direct pH Sensors and a Go Direct® Charge Station. The Go Direct Charge Station will charge up to 16 Go Direct sensors at a time.

Common Household Acids and Bases Using Go Directâ„¢ pH
Common Household Acids and Bases Using Go Direct® pH (3:45)
Strong Acid and Base Titration Using Go Directâ„¢ pH
Strong Acid and Base Titration Using Go Direct® pH (5:46)

Additional Videos

pH Sensor Care and Feeding
pH Sensor Care and Feeding (31:58)

Specifications

  • pH range: 0–14
  • Accuracy with new electrode (pH): ±0.2
  • Type: Sealed, gel-filled, polycarbonate body, Ag/AgCl reference, single junction
  • Shaft diameter: 12 mm OD
  • Storage solution: pH-4/KCl solution (10 g KCl in 100 mL buffer pH-4 solution)
  • Connections:
    • Wireless: Bluetooth
    • Wired: USB

Experiments

Middle School (12 experiments)
ExperimentLab Book
Water Quality: pHEarth Science with Vernier
Acid Rain and Its Effect on Surface WaterEarth Science with Vernier
Soil pHEarth Science with Vernier
Soil and Acid RainEarth Science with Vernier
Drug TestsForensics with Vernier
No DumpingForensics with Vernier
Soil StudyExploring Earth and Space Science
A Water Field StudyExploring Earth and Space Science
A Water Field StudyMiddle School Science with Vernier
Soil StudyMiddle School Science with Vernier
Household Acids and BasesPhysical Science with Vernier
Acid RainPhysical Science with Vernier
High School (52 experiments)
ExperimentLab Book
Investigating LeChatelier’s PrincipleVernier Chemistry Investigations for Use with AP* Chemistry
Investigating Acid-Base TitrationsVernier Chemistry Investigations for Use with AP* Chemistry
The Buffering Ability of Commercial ProductsVernier Chemistry Investigations for Use with AP* Chemistry
Testing the Effectiveness of a BufferVernier Chemistry Investigations for Use with AP* Chemistry
Investigating Water HardnessVernier Chemistry Investigations for Use with AP* Chemistry
The Acidity of Juice and Soft DrinksVernier Chemistry Investigations for Use with AP* Chemistry
Identifying an Unknown SubstanceVernier Chemistry Investigations for Use with AP* Chemistry
Acids and BasesAgricultural Science with Vernier
Water MonitoringInvestigating Biology through Inquiry
Buffer InvestigationsInvestigating Biology through Inquiry
Interdependence of Plants and AnimalsBiology with Vernier
Acid RainBiology with Vernier
Watershed TestingBiology with Vernier
Physical Profile of a LakeBiology with Vernier
Acids and BasesBiology with Vernier
Investigating IndicatorsAdvanced Chemistry with Vernier
Separation and Qualitative Analysis of CationsAdvanced Chemistry with Vernier
Separation and Qualitative Analysis of AnionsAdvanced Chemistry with Vernier
BuffersAdvanced Chemistry with Vernier
Determining the Ksp of Calcium HydroxideAdvanced Chemistry with Vernier
Determining Ka by the Half-Titration of a Weak AcidAdvanced Chemistry with Vernier
Standardizing a Solution of Sodium HydroxideAdvanced Chemistry with Vernier
Acid-Base TitrationAdvanced Chemistry with Vernier
Long Term Water MonitoringInvestigating Chemistry through Inquiry
Acid-Base Properties of Household ProductsInvestigating Chemistry through Inquiry
The Effect of Acid Deposition on Aqueous SystemsInvestigating Chemistry through Inquiry
Acid-Base TitrationsInvestigating Chemistry through Inquiry
Baking Soda and Vinegar Investigations RevisitedInvestigating Chemistry through Inquiry
Household Acids and BasesChemistry with Vernier
Acid RainChemistry with Vernier
Titration Curves of Strong and Weak Acids and BasesChemistry with Vernier
Acid-Base TitrationChemistry with Vernier
Titration of a Diprotic Acid: Identifying an UnknownChemistry with Vernier
Acid Dissociation Constant, KaChemistry with Vernier
Time-Release Vitamin C TabletsChemistry with Vernier
The Buffer in LemonadeChemistry with Vernier
Determining the Phosphoric Acid Content in Soft DrinksChemistry with Vernier
Microscale Acid-Base TitrationChemistry with Vernier
Water Quality: pHEarth Science with Vernier
Acid Rain and Its Effect on Surface WaterEarth Science with Vernier
Soil pHEarth Science with Vernier
Soil and Acid RainEarth Science with Vernier
Drug TestsForensics with Vernier
No DumpingForensics with Vernier
Mystery Powder from a Crime SceneForensic Chemistry Experiments
Fish KillForensic Chemistry Experiments
Messed Up Makeup (Drop Counter)Forensic Chemistry Experiments
Messed Up Makeup (Buret)Forensic Chemistry Experiments
What’s the Difference Between Baking Soda and Baking Powder?Food Chemistry Experiments
I'm Drinking Acid?!Food Chemistry Experiments
Household Acids and BasesPhysical Science with Vernier
Acid RainPhysical Science with Vernier
College (28 experiments)
ExperimentLab Book
Acids and BasesAgricultural Science with Vernier
Water MonitoringInvestigating Biology through Inquiry
Buffer InvestigationsInvestigating Biology through Inquiry
Interdependence of Plants and AnimalsBiology with Vernier
Acid RainBiology with Vernier
Watershed TestingBiology with Vernier
Physical Profile of a LakeBiology with Vernier
Acids and BasesBiology with Vernier
Investigating IndicatorsAdvanced Chemistry with Vernier
Separation and Qualitative Analysis of AnionsAdvanced Chemistry with Vernier
BuffersAdvanced Chemistry with Vernier
Determining the Ksp of Calcium HydroxideAdvanced Chemistry with Vernier
Determining Ka by the Half-Titration of a Weak AcidAdvanced Chemistry with Vernier
Standardizing a Solution of Sodium HydroxideAdvanced Chemistry with Vernier
Acid-Base TitrationAdvanced Chemistry with Vernier
Long Term Water MonitoringInvestigating Chemistry through Inquiry
Acid-Base Properties of Household ProductsInvestigating Chemistry through Inquiry
The Effect of Acid Deposition on Aqueous SystemsInvestigating Chemistry through Inquiry
Acid-Base TitrationsInvestigating Chemistry through Inquiry
Baking Soda and Vinegar Investigations RevisitedInvestigating Chemistry through Inquiry
Acid-Base TitrationChemistry with Vernier
Time-Release Vitamin C TabletsChemistry with Vernier
Mystery Powder from a Crime SceneForensic Chemistry Experiments
Fish KillForensic Chemistry Experiments
Messed Up Makeup (Drop Counter)Forensic Chemistry Experiments
Messed Up Makeup (Buret)Forensic Chemistry Experiments
What’s the Difference Between Baking Soda and Baking Powder?Food Chemistry Experiments
I'm Drinking Acid?!Food Chemistry Experiments

Requirements

Choose a platform below to see its compatibility requirements.

LabQuest
InterfaceLabQuest App
LabQuest 3Full support
LabQuest 2 (discontinued)Full support 1
LabQuest (discontinued)Incompatible

Compatibility Notes

  1. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Computers
Software
InterfaceGraphical Analysis
No interface requiredFull support 1
LabQuest 3Full support 2
LabQuest 2 (discontinued)Full support 2 3

Compatibility Notes

  1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.
  2. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 or LabQuest 3 when the LabQuest is connected to a computer or Chromebook via Wireless Data Sharing.
  3. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Chromebook
Software
InterfaceGraphical Analysis
No interface requiredFull support
LabQuest 3Full support 1
LabQuest 2 (discontinued)Full support 1 2

Compatibility Notes

  1. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 or LabQuest 3 when the LabQuest is connected to a computer or Chromebook via Wireless Data Sharing.
  2. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
iOS
Software
InterfaceGraphical AnalysisGraphical Analysis GW
No interface requiredFull supportFull support
LabQuest 3Full support 1 2Full support 1 2
LabQuest 2 (discontinued)Full support 1 2 3Full support 1 2 3

Compatibility Notes

  1. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
  2. iOS and Androidâ„¢ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
  3. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Android
Software
InterfaceGraphical AnalysisGraphical Analysis GW
No interface requiredFull supportIncompatible
LabQuest 3Full support 1 2Full support 1
LabQuest 2 (discontinued)Full support 1 2 3Full support 1 3

Compatibility Notes

  1. iOS and Androidâ„¢ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
  2. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
  3. Wireless connection of this sensor to a LabQuest 2 requires a Go Direct Bluetooth Adapter when used with some older LabQuest 2 models.
Python
Software
InterfacePython
No interface requiredFull support
Javascript
Software
InterfaceJavascript
No interface requiredFull support 1

Compatibility Notes

  1. A wireless Bluetooth® connection can be made with Go Direct sensors on any platform running a browser with WebBluetooth support. However, only a few operating systems have been tested and testing has been limited.
LabVIEW
Software
InterfaceNI LabVIEW
No interface requiredFull support 1

Compatibility Notes

  1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.

What's Included

Go Direct pH

  • Go Direct pH Sensor (includes Go Direct Electrode Amplifier)
  • pH storage solution bottle with pH storage solution
  • Micro USB Cable
  • Quick-start guide

Go Direct pH Teacher Pack

Accessories

AccessoryOrder CodePriceQuantity
Electrode SupportESUP$10.00
Go Direct® Charge StationGDX-CRG$89.00
pH Buffer Capsule KitPH-BUFCAP$34.00
Go Direct® Sensor ClampGDX-CLAMP$14.00
Replacement PartOrder CodePriceQuantity
Go Direct® Electrode AmplifierGDX-EA$79.00
pH Storage SolutionPH-SS$25.00
Go Direct® pH BNC ElectrodeGDX-PH-BNC$50.00
Storage Solution Bottles (5)BTL$10.00
Micro USB to USB-C CableCB-USB-C-MICRO$9.00
Micro USB CableCB-USB-MICRO$5.00
Go Direct® 300 mAh Replacement BatteryGDX-BAT-300$10.00

Support

Resources

Warranty

5-year limited warranty (1 year on battery)
See our warranty policy

Replacement Parts

Contact Us

Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications.

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