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DiST 5 Waterproof Meter. Hanna Instruments model HI 98311. TDS ( reads in PPM), EC and temperature meter tester. Waterproof and designed to float. Feels great in your hand. Very stylish and modern. Low battery indicator. A great buy.... — Ships via UPS from Portland, Oregon USA...more.
HANNA REPLACEMENT PH PROBE (HI1293) Special Order FOR Hanna Grochek® Combo pH/EC/TDS/Temperature Monitor (Model HI 991404)
The Combo HI 991404 meter is designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications with a single instrument. These indicators... Note: Calibration Buffer Solutions are available separately....more.
MILWAUKEE MARTINI PH55 PH/TEMP TESTER Martini pH55/Temp Tester and Probe
IP67 Waterproof pH tester with large dual-level LCD that displays pH and temperature (°C or °F). The large display shows readings in an extended range from 2.0 to 16.0 pH and simultaneously shows temperature from 5.0 to 105.0°C or 23.0 to 221.0°F. This tester has a stability indicator and hold function that freezes the display for easy and accu... ...more.
Rapitest Digital Moisture Meter Rapitest Digital Moisture Meter
Rapitest Digital Moisture Meter tests for moisture at the roots - where
it matters - you no longer risk over watering a healthy plant just
because the soil near the surface is dry or under-watering because it
appears moist. Ideal for houseplants, window boxes, patio tubs and
hanging baskets.
Instant digital read-out.
Checks soi... ...more.
Replacement Probe for GroChek. Replacement Probe for Hanna Gro Chek meter series. HI1286 PROBE FOR HI981401Replacement Probe for Hanna Grow Check meter series. This will replace the pH elecrtrode in all models of the Grow Check.... — Ships via UPS from Portland, Oregon USA...more.
TDS 1500 CALIBRATION/BOX OF 25 SACHETS TDS 1500 Calibration/Box of 25 Sachets (CAL-4)FOR PH-EC-TDS METER About the meters: The Milwaukee 3 in 1 Meter is the Cadillac of meters. It measures pH, EC and TDS (PPM) with one probe. PH is measured from 1-14, EC from 0-10 and TDS from 0-5000. Uses one 9 volt battery (included). Two year warranty on the meter, and a 6 month warranty on the probe. Replacement probes are also ava... — Ships from Perris, California; Cranston, Rhode Island; Portland, Oregon; Aurora, Colorado; Dallas, Texas USA...more.
24-7 Nutrient Monitor Replacement PPM Probe 24-7 Nutrient Monitor Replacement PPM ProbeThis item is the replacement PPM probe for the 24-7 Nutrient Monitor.The 24–7 Nutrient Meter from Control Wizard Products is a great all around meter for nutrient applications needing constant monitoring. It measures PPM, pH and Temperature and with its large illuminated display it is easy to read from a distance. Calibration screws are co... — Ships via UPS from Portland, Oregon USA...more.
6' REPLACEMENT PROBE FOR PH CONSTANT MONITOR METER 6’ Replacement Probe for pH Constant Monitor Meter (MTR-RPPH)MILWAUKEE CONSTANT MONITORING METERS This Milwaukee series of EC, TDS (PPM) and pH Constant Monitoring Meters are designed to constantly monitor your solutions. They all feature a removable 12 volt power supply, and replaceable probes with a 6 foot cable. They have a setpoint that is selected by turning a knob on the fro... Note: Calibration Buffer Solutions are available separately. — Ships from Perris, California; Cranston, Rhode Island; Portland, Oregon; Aurora, Colorado; Dallas, Texas USA — FREE shipping when ordering $75 or more of qualifying items....more.
BLUELAB® TRUNCHEON™ SOIL pH REPLACEMENT PROBE (SPECIAL ORDER ONLY) For BlueLab Soil pH Meter
SOIL PH METER REPLACEMENT PROBE ONLY(SO)
About the meter:
If you need to measure the pH level of soil, media or substrates, then the Bluelab® Soil pH Meter is just what you need! Our meter can be used by everybody from the home enthusiast to commercial growers. 5 year Bluelab® Guarantee (6 month for probe).
Quality soil pH probe included.
Supplied i... — FREE shipping when ordering $75 or more of qualifying items....more.
Dual Grochek - pH, TDS, Temp. Continuous monitoring (HI981404N) Dual Grochek - pH, TDS, Temp. Continuous monitoring (HI981404N) (eco-5422C)GroChek pH & TDS Combo Continuous Reading Meter
Displays pH & EC Simultaneously
Adjustable Setpoints
Space Efficient
Hanna Dual Grochek
The HI 981404N is ideal for hydroponic
applications where pH and TDS
levels need to be continuously monitored.
These wall mount monitors
feature a larg... — Ships from Seattle, Washington USA...more.
Hanna Checker pH Tester (HI 98103) Hanna Checker pH Tester (HI 98103)Hanna Checker pH Tester (HI 98103) (716435)At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-size pH tester. The Checker supplies you with fast and accurate readings from 0.00 to 14.00 pH with a resolution of 0.01 pH. This compact tester features a large easy-to-read LCD and a simple to perform 2-point calibra... Note: Calibration Buffer Solutions are available separately....more.
Hanna Checker Replacement Electrode (HI 1270) Hanna Checker pH Tester (HI 98103)Hanna Checker Replacement Electrode (HI 1270) (716436)At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-size pH tester. The Checker supplies you with fast and accurate readings from 0.00 to 14.00 pH with a resolution of 0.01 pH. This compact tester features a large easy-to-read LCD and a simple to perform 2-po... ...more.
HANNA PHEP 4 WATERPROOF METER (HI98127) Hanna Waterproof PHEP 4 Tester With Replaceable Electrode (Model HI 98127)
When HANNA® introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep's ease-of-use in combination with its affordability made it possible for non-technical and technical personnel alike to measure pH on the spot, accurately ... ...more.
HANNA PORTABLE PH/EC/TDS METER (HI9813-0) Hanna Waterproof pH/EC/TDS Meter (Model HI 9813-0)
HI 9813-0 allows you to measure pH, EC (conductivity) and TDS with just one instrument! This meter has a full-spectrum pH measurement range.
The EC range goes to 4.00 mS/cm. In the TDS range, both instruments use a conversion factor from 0.56 to 0.72 for fertilizer readings, to ensure your measurements fully conform to indust... — FREE shipping when ordering $75 or more of qualifying items....more.
Meters, Timers & Instruments 
