Quick view Compare Choose Options Active Air Active Air 2-Way Moisture/pH Meter MSRP: Was: Now: $21.38 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar EC Calibration Kit 2.77 EC, 8 oz. each MSRP: Was: Now: $25.59 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar GS2 Soil PH/Temp 2-IN-1 Pen MSRP: $256.99 Was: Now: $190.25 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar pH Probe Maintanence Kit MSRP: Was: Now: $32.60 Quick view Compare Choose Options
Quick view Compare Choose Options HM Digital Meters HM Digital PH-STOR pH Electrode Storage Solution MSRP: Was: Now: $20.72 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar GS2-E replacement Soil Spear pH electrode MSRP: $181.99 Was: Now: $137.31 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar pH calibration kit pH 4/7, 8 oz. each MSRP: Was: Now: $29.07 Quick view Compare Choose Options
Quick view Compare Choose Options HM Digital Meters HM Digital 1000 ppm TDS Calibration Solution, 3 oz 90 ml MSRP: Was: Now: $21.42 Quick view Compare Choose Options
Quick view Compare Choose Options GroStar GroStar pH calibration kit pH 4/7/10, 8 oz. each MSRP: Was: Now: $36.13 Quick view Compare Choose Options
Quick view Compare Choose Options Active Air Active Air 3-Way Meter MSRP: Was: Now: $22.08 Quick view Compare Choose Options
Quick view Compare Add to Cart GroStar GroStar GS4 pH/EC/500ppm/700ppm/Temp 5-in-1 Combo Pen MSRP: $178.99 Was: Now: $135.19 Quick view Compare Add to Cart
