GroStar
Apera GroStar GS1 pH Pen *
Apera GroStar GS4 pH/EC Combo Pen *
Apera GroStar GS2 Soil pH Pen *
Apera GroStar GS3 EC Pen *
Apera GroStar GS2-E replacement Soil Spear pH electrode *
Apera GroStar GS1-E replacement pH electrode *
Apera GroStar GS3-E replacement EC electrode *
Apera pH calibration kit (pH 4/7, 8oz. each) *
Apera GroStar GS4-E replacement pH/EC combo electrode *
Apera pH calibration kit (pH 4/7/10, 8oz. each) *
Apera EC calibration kit (2.77EC, 8oz.) *
Apera pH probe maintenance kit *
