Quick view Details GroStar | sku: AI71117 Apera EC calibration kit (2.77EC, 8oz.) MSRP: $14.99 Was: $14.99 Now: $11.91 Add to Cart
Quick view Details GroStar | sku: AI61170 Apera pH probe maintenance kit MSRP: $23.99 Was: $23.99 Now: $19.07 Add to Cart
Quick view Details GroStar | sku: AI61113 Apera pH calibration kit (pH 4/7, 8oz. each) MSRP: $18.99 Was: $18.99 Now: $15.09 Add to Cart
Quick view Details Bluelab | sku: HGC716055 Bluelab® pH Probe KCl Storage Solution 120 ml MSRP: $14.70 Was: $14.70 Now: $13.34 Add to Cart
Quick view Details Hanna Instruments | sku: HI70300-023 Hanna 230 mL Storage Solution MSRP: Now: $16.00 View Details
Quick view Details Hanna Instruments | sku: HI7061-023 Hanna 230 mL Cleaning Solution MSRP: Now: $16.00 View Details
Quick view Details Hanna Instruments | sku: HI50036P GroLine Quick Cal 20ml Satchet MSRP: Now: $1.80 View Details
Quick view Details Hanna Instruments | sku: HI5036-023 GroLine QuickCal Solution 230ml MSRP: Now: $16.00 View Details
Quick view Details Bluelab | sku: BLU27750 Bluelab 2.77EC Conductivity Solution 500 ml MSRP: $18.90 Was: $18.90 Now: $15.63 View Details
Quick view Details Bluelab | sku: BLU27725 Bluelab 2.77EC Conductivity Solution 250 ml MSRP: $10.50 Was: $10.50 Now: $8.04 Add to Cart
Quick view Details Bluelab | sku: PH4250BL Bluelab pH 4.0 Calibration Solution 250 ml MSRP: $11.00 Was: $11.00 Now: $10.00 Add to Cart
Quick view Details General Hydroponics | sku: HGC722145 GH pH Test Kit 1 oz MSRP: $9.59 Was: $9.59 Now: $9.25 Add to Cart
Quick view Details General Hydroponics | sku: HGC722140 GH pH Test Indicator 8 oz (Must buy 12) MSRP: $14.68 Was: $14.68 Now: $10.50 Add to Cart
Quick view Details Bluelab | sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250ml MSRP: $24.50 Was: $24.50 Now: $23.60 Add to Cart
Quick view Details Bluelab | sku: HGC716448 Bluelab Probe Care pH & Conductivity MSRP: $30.74 Was: $30.74 Now: $25.42 Add to Cart
Quick view Details Bluelab | sku: HGC716053 Bluelab Probe Care Kit - pH MSRP: $23.32 Was: $23.32 Now: $19.29 Add to Cart
Quick view Details Bluelab | sku: HGC716052 Bluelab Nutrient Probe Care Kit Conductivity MSRP: $30.74 Was: $30.74 Now: $22.42 Add to Cart
Quick view GroStar | sku: AI71117 Apera EC calibration kit (2.77EC, 8oz.) MSRP: $14.99 Was: $14.99 Now: $11.91 Add to Cart
Quick view GroStar | sku: AI61170 Apera pH probe maintenance kit MSRP: $23.99 Was: $23.99 Now: $19.07 Add to Cart
Quick view GroStar | sku: AI61113 Apera pH calibration kit (pH 4/7, 8oz. each) MSRP: $18.99 Was: $18.99 Now: $15.09 Add to Cart
Quick view Bluelab | sku: HGC716055 Bluelab® pH Probe KCl Storage Solution 120 ml The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH... MSRP: $14.70 Was: $14.70 Now: $13.34 Add to Cart
Quick view Hanna Instruments | sku: HI70300-023 Hanna 230 mL Storage Solution No information at this time MSRP: Now: $16.00 View Details
Quick view Hanna Instruments | sku: HI7061-023 Hanna 230 mL Cleaning Solution GroLine Cleaning Solutions GroLine Cleaning Solution is a specially formulated acid that cleans pH electrodes. Growers should avoid touching the glass on pH electrodes as doing so can damage the electrode's invisible (but extremely important) gel layer... MSRP: Now: $16.00 View Details
Quick view Hanna Instruments | sku: HI50036P GroLine Quick Cal 20ml Satchet HI50036P is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each sachet has the lot... MSRP: Now: $1.80 View Details
Quick view Hanna Instruments | sku: HI5036-023 GroLine QuickCal Solution 230ml HI5036-023 is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each bottle has the lot... MSRP: Now: $16.00 View Details
Quick view Bluelab | sku: BLU27750 Bluelab 2.77EC Conductivity Solution 500 ml The 2.77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solution should be stored in a cool place out of direct sun and heat. Please keep out of reach of children. They should be... MSRP: $18.90 Was: $18.90 Now: $15.63 View Details
Quick view Bluelab | sku: BLU27725 Bluelab 2.77EC Conductivity Solution 250 ml The 2.77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solution should be stored in a cool place out of direct sun and heat. Please keep out of reach of children. They should be... MSRP: $10.50 Was: $10.50 Now: $8.04 Add to Cart
Quick view Bluelab | sku: PH4250BL Bluelab pH 4.0 Calibration Solution 250 ml pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibration Solution should be stored in a cool place out... MSRP: $11.00 Was: $11.00 Now: $10.00 Add to Cart
Quick view General Hydroponics | sku: HGC722145 GH pH Test Kit 1 oz General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to... MSRP: $9.59 Was: $9.59 Now: $9.25 Add to Cart
Quick view General Hydroponics | sku: HGC722140 GH pH Test Indicator 8 oz (Must buy 12) General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to... MSRP: $14.68 Was: $14.68 Now: $10.50 Add to Cart
Quick view Bluelab | sku: HGC716495 Bluelab pH Probe KCI Storage Solution 250ml The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH... MSRP: $24.50 Was: $24.50 Now: $23.60 Add to Cart
Quick view Bluelab | sku: HGC716448 Bluelab Probe Care pH & Conductivity Everything you need to clean, hydrate and calibrate pH probes as well as clean and test conductivity (ppm/EC) probes. The instrument is only as accurate as the probe is clean. Accurate readings simplify crop management and provide improved growth... MSRP: $30.74 Was: $30.74 Now: $25.42 Add to Cart
Quick view Bluelab | sku: HGC716053 Bluelab Probe Care Kit - pH Everything you need to clean, hydrate and calibrate pH probes. Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe. The probe surface is where the instrument takes the... MSRP: $23.32 Was: $23.32 Now: $19.29 Add to Cart
Quick view Bluelab | sku: HGC716052 Bluelab Nutrient Probe Care Kit Conductivity The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor or controller. If the probe is contaminated or dirty, it affects the accuracy of the reading... MSRP: $30.74 Was: $30.74 Now: $22.42 Add to Cart