[Tester EC & ppm]
[Tester pH & EC & ppm]
[Tester pH+ORP]
[Tester pH]
[Tester + Storage Soaking Solution (8 oz.) pH & EC & ppm]
[Tester + Maintenance Kit pH & EC & ppm]
[Tester pH & EC & ppm+ORP]
[Tester Soil pH]
Apera Instruments GroStar GS2 Soil pH Pen Tester (Gen II) is a lab-grade pH meter designed specifically for growers to easily manage crop success, featuring a replaceable spear pH sensor for direct soil test 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.