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Rapitest Digital Soil Test Kit Quickly and easily tests soil samples measuring levels of pH, Nitrogen, Phosphorus, and Potash.... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
KILL A WATT METER Kill A Watt
KILL A WATT METER
Measures electrical consumption accurately within 0.2% and is ETL approved. Features large LCD screen which displays 8 critical units of measurements. Enables you to cost forecast.
Manufacturer's Product Information
2007 MSRP Each $39.95
Case Weight0.44 LB
Case Dimens... — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
Tower of Power 6 Outlet Surge Protector Tower of Power (eco-4529)Tower of Power
Hydrofarm’s Tower of Power
Introducing Tower of Power -The Remedy for Packed Power StripsSay goodbye to over-crowded, under-utilized power strips. Hydrofarm's TOWER OF POWER offers 6 outlets with enough room to accommodate even the bulkiest timers and adapters. The Tower of Power will handle all you can throw at it. In your home office i... — Ships from Seattle, Washington USA....more info.
Accurate pH 1. This is the Accurate pH 1. The Accurate pH 1 meter has clearly been manufactured to compete in the market place for entry-level growers. Control Wizard should do well against competitor models, as this meter is stylish, gives solid readings and has a good feel in the hand. It has a two-point calibration process that is easy to do and takes little time. This meter reads in pH points... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
Checker pH Tester with Replaceable Electrode Hanna Instruments Checker pH Tester with Replaceable Electrode (HI98103)The pH Checker supplies users with fast and accurate readings from 0 to 14 pH with a resolution of 0.01 pH. This compact tester features an easy to read LCD and simple to perform two point calibration.
The pH electrode of the Checker can be easily replaced. You only need to unscrew the electrode from the meter... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
HM INLINE DUAL TDS MONITOR HM Digital In-Line Dual TDS Monitor Model DM-1
INLINE DUAL DM1 TDS MONITOR
Displays TDS levels of the feed water and product water with in & out electrode probes.
Highly efficient and accurate due to its advanced microprocessor technology.
Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.
Dual Range 0-9990 ppm.
Fac... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
REEF STATUS CALCIUM TEST Seachem Reef Status™ Calcium
50 TESTS
This kit measures all types of calcium, including gluconate calcium. The method is based on specific titration with a unique indicator. Measures in increments of 5 mg/L. Each kit runs 150 tests.... — Free Shipping when ordering $50 or more of qualifying items. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
Hydro RX Water & Soil Hydrofarm Hydro RX Water & Soil (HGLABTEST)Tired of guessing whether your water's nutrient levels are adequate? Hydro Rx takes the guess-work out of water management. Hydrofarm Test Lab has developed a kit that lets you manage your plants' nutrients with lab-tested precision. Hydro Rx is simple: Just take a source water, hydroponic solution, or soil sample and send it back to Hydro... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
HM Digital Replacement Probe for pH Model PH-200 Measures pH and Temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement Range: 0-14 pH with a waterproof housing. Digital automatic calibration (one point), with digital fine tuning. Auto-off, data-hold functions and low-battery indicator. Display: large and easy-to-read LCD screen includes... Note: Calibration Buffer Solutions are available separately. — Ships from SS: WA, CA, CO, MI, TN, PA, FL USA....more info.
PH/Temperature Meter HM Digital Meters PH/Temperature Meter (HMDPHM80)pH/temperature meter.
Manufacturer's Product Information
MSRP each $62.95
Dimensions2.25 x 2.25 x 3.75
Case Weight3
Case Quantity10
... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
EC/TDS/Temp Waterproof Hydro Tester HM Digital Meters EC/TDS/Temp Waterproof Hydro Tester (HMDCOM80) KEY FEATURES
Best value in its class (under $50)
Measures electrical conductivity (EC), TDS and temperature.
Automatic Temperature Compensation (ATC)
Water-resistant housing
Large LCD display
Hold button and Auto shut-off
Digital Calibration (push butto... — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
hf-HMDCOM80
$31.19
Accurate pH 4 This meter utilizes the same body and electronics as the CWP Instruments Accurate pH 3 but has the added advantage of a larger corded electrode. The larger electrode enhances the meters electronic circuitry making it not only very accurate but also it has very stable readings.The 30 inches long corded electrode allows the user to test a large body of solution without the chance of ... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
Replacement pH Sensor PH-200 HM Digital Meters Replacement pH Sensor PH-200 (HMDSPP2)This spare pH sensor is for HM Digital Waterproof pH Meter model P-200. Features Glass pH sensor and reference tube and thermister.
Manufacturer's Product Information
MSRP each $49.95
Dimens... Note: Calibration Buffer Solutions are available separately. — Ships from HF: OR, CA, CO, PA, TX, FL USA....more info.
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 from Portland, Oregon USA....more info.
Replacement pH Electrode for 24-7 Nutrient Monitor. If your 24-7 Nutrient Monitor pH electrode breaks or wears out, order this item. This electrode is compatible with the combination Hanna meter listed on this site as HI9813-6 GROCHECK PORTABLE COMBO. ... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
Accurate pH 2. This is the Accurate pH 2. This meter is a step up from Control Wizard Products' Accurate pH 1 meter with readings that show pH in whole and tenths of a pH point. It has a two-point calibration process that is easy to do and takes little time. This calibration process requires the pH 4.0 and pH 7.0 calibration solutions (Sold Separately).It has a temperature compensation feature an... Note: Calibration Buffer Solutions are available separately. — Ships from Portland, Oregon USA....more info.
Meters, Timers & Instruments 
