Hydroponics Grow Lights Climate Control Nutrient Additives Tents & Tarps Plant Care Books & Videos Pots & Containers Garden Accessories Seed Starting Nutrients Growing Media W Greenwich, RI (401) 392-3100 RI Location Page >>> Norwalk, CT (203) 956-5600 CT Location Page >>> Hanna Instruments Choose Another Brand Produuct Image Not Available Hanna Instruments SPO EC/TDS Probe for HI981409 & HI981410 PRICE: $69.95 Hanna Instruments Replacement probe for HI9026 PRICE: $106.95 Hanna Instruments GroChek replacement probe for HI9813 PRICE: $138.95 Hanna Instruments GroChek replacement probe for HI9813-0 PRICE: $154.95 Hanna Instruments Gro'chek replacement probe for HI9813-6 PRICE: $138.95 Hanna Instruments Grochek Replacement Probe for HI9813-5 & HI9813-5N PRICE: $129.95 Hanna Instruments pH Electrode for HI981401N & HI981404N PRICE: $65.95 Hanna Instruments pH Combo Electrode Glass Body PRICE: $192.95 Hanna Instruments pH Combination Electrode PRICE: $60.95 Hanna Instruments Cal Check Solution PRICE: $1.80 Hanna Instruments pH 4.01 Calibration Solution, 25x20mL, case of 25 PRICE: $1.28 Hanna Instruments pH 7.01 Calibration Solution, 25x20mL, case of 25 PRICE: $1.28 Hanna Instruments 12880 S/cm Calib Solution, 25x20mL, case of 25 PRICE: $1.28 Hanna Instruments 1413 S/cm (EC) Calib Solution, 25x20mL, case of 25 PRICE: $1.28 Hanna Instruments 1382 PPM@25C Calibration Solution 20mL, case of 25 PRICE: $1.28 Hanna Instruments PH4 Calibration Solution, 16 oz PRICE: $18.95 Hanna Instruments PH7 Calibration Solution, 16 oz PRICE: $18.95 Hanna Instruments Storage Solution, 16 oz PRICE: $18.95 Hanna Instruments 12880 S/ cm conductivity solution PRICE: $12.95 Hanna Instruments 1413mS/cm Sol. 230mL PRICE: $14.95 Hanna Instruments 1382ppm TDS Sol, 460ml PRICE: $18.95 Hanna Instruments 1382ppm Solution, 230ml PRICE: $14.95 Hanna Instruments 1500PPM TDS Sol 16oz PRICE: $15.95 Hanna Instruments 1500PPM Solution, 230ml PRICE: $13.95 Hanna Instruments 1500 PPM@25C Calibration Solution 20mL, case of 25 PRICE: $1.28 Hanna Instruments Electrode Cleaner 16 oz PRICE: $19.95 Hanna Instruments Electrolyte Solution PRICE: $60.95 Hanna Instruments Salinity (NaCI) Calibration solution 30g-l. PRICE: $34.95 Hanna Instruments pH Electrode for HI98127/HI98128/HI98129/HI98130 PRICE: $62.95 Hanna Instruments Conductivity/TDS Probe for Soil Measurement of HI993310 PRICE: $156.95 Hanna Instruments GroChek EC Electrode PRICE: $57.95 Hanna Instruments Digital light Meter PRICE: $163.95 Hanna Instruments Checker pH Tester with Replaceable Electrode PRICE: $40.95 Hanna Instruments Champ pH Tester PRICE: $62.95 Hanna Instruments pHep PRICE: $66.95 Hanna Instruments PH/EC/TDS/C Portable Meters PRICE: $244.95 Hanna Instruments Hanna Gro'CHEK pHEP 4 Meter PRICE: $113.95 Hanna Instruments Hanna Gro'CHEK pHEP 5 Meter PRICE: $132.95 Hanna Instruments Combo pH/EC/TDS/C/PPM Tester PRICE: $203.95 Hanna Instruments GroChek pH/EC/TDS/C Portable M PRICE: $283.95 Hanna Instruments GroChek pH/EC/TDS/C Portable m PRICE: $283.95 Hanna Instruments GroChek Hanna pH/EC/TDS/C/PPT Pocket Tester PRICE: $203.95 Hanna Instruments GroChek Hanna pH Indicator PRICE: $119.95 Hanna Instruments GroChek pH & TDS Combo Continuous Reading Meter PRICE: $210.95 Hanna Instruments GroChek pH Tester PRICE: $113.95 Hanna Instruments GroChek TDS Tester PRICE: $115.95 Hanna Instruments GroChek EC Tester PRICE: $115.95 Hanna Instruments Mini pH Controller PRICE: $201.95 Hanna Instruments Cont. pH/TDS/temp Monitor PRICE: $252.95 Hanna Instruments Continuous pH/TDS/temp Monitor PRICE: $262.95 Hanna Instruments DiST 1 TDS Tester PRICE: $77.95 Hanna Instruments DiST 5 EC/TDS Meter PRICE: $130.95 Hanna Instruments GroChek Hanna EC/TDS Monitor w/ HI7632 EC Probe PRICE: $114.95 Hanna Instruments GroChek EC Monitor PRICE: $114.95 Hanna Instruments pH Soil Meter PRICE: $454.95 Hanna Instruments GroChek pH/EC/TDS/Temp. Combo PRICE: $246.95 Hanna Instruments Soil Conductivity/Salinity Meter w/ Carrying Case PRICE: $639.95 Hanna Instruments WM pH TDS Cntrl. 15 VAC PRICE: $777.95 Hanna Instruments pH Controller 115V PRICE: $195.95 Hanna Instruments Primo TDS Tester PRICE: $40.95 Please note that some of the products shown here are not regularly stocked in our retail store. Please call us or stop in to check for availability. If we don't have an item that you want in stock, we will gladly order it for you. Most orders are received within 2 days. Prices shown are subject to change. Good to Grow Southern New England’s premiere indoor gardening supply store Home  •   Brands  •   VIP Club  •   News  •   Contact RI Web Site Design by Terrapin Art & Design Management Login LOCATIONS 34 Nooseneck Hill Road West Greenwich, RI (401) 392-3100 51 Old Tower Hill Road Wakefield, RI (401) 783-1733 335 Westport Avenue Norwalk, CT (203) 956-5600 SHOP FOR PRODUCTS Hydroponics Grow Lights Climate Control Nutrient Additives Tents & Tarps Plant Care Books & Videos Pots & Containers Garden Accessories Seed Starting Nutrients Growing Media