GroStar Series GS4-P pH/EC/500ppm/700ppm/ORP 6-in-1 Combo Pen Tester Kit (Gen II) with Replaceable Double-junction pH/EC Probe and ORP Probe for Hydroponics Water Quality Testing

Apera Instruments GroStar GS4-P pH/EC/ppm/ORP Combo Pen Tester Kit is a lab-grade multi-parameter meter kit designed specifically for growers to easily manage crop success, featuring a replaceable pH/EC plus an ORP probe, and a grower-friendly workflow along with other intelligent functions and features that help reduce the guesswork and give you the confidence in every measurement.

Main Features:

• The pH/EC combo probe is built with a double-junction pH sensor and titanium conductivity sensor, ensuring quick and reliable readings in the long run.
  
• A replaceable double-junction platinum ORP probe is included in this kit for you to easily monitor the ORP level of nutrient solutions. Just switch on the ORP probe and the tester will automatically enter ORP measurement mode.
  
• Easy to use design and quick 2-point automatic calibration with electrode condition display.
  
• 3-Color backlit LCD screen gives you clear readings in different modes even in dark environment.
  
• TruRead measurement mode available for taking measurements in multiple locations and automatically displaying the average, minimum, and maximum values of all the readings.

GroStar GS4 Tester Manual