Meters & Testing

National Hydro Group is your online source for Meters & Testing. If you cant find the Meters & Testing that meet your needs please give us a ring or send a quick email so we can help you find exactly what you're looking for.
Dosatron Water Powered Doser 14 GPM 1:100 to 1:10-NWGSupply.com
Save 12%
$925.00
$812.95

Dosatron Water Powered Doser 14 GPM 1:100 to 1:10

Dosatron

The Dosatron water powered doser inject nutrients, supplements/additives and pH adjusters into irrigation water with ease. Dosatron is a passive pr...

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$925.00
$812.95
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Dosatron Nutrient Delivery System - EC (PPM) / pH / Temp Guardian Connect Monitor Kit-NWGSupply.com
Save 25%
$1,166.69
$879.95

Dosatron Nutrient Delivery System - EC (PPM) / pH / Temp Guardian Connect Monitor Kit

Dosatron

Knowing the EC/ppm, pH and temperature that the Nutrient Delivery System is providing to the crop will give the grower the confidence that the plan...

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$1,166.69
$879.95
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General Hydroponics pH Down, gal-NWGSupply.com
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$27.00
$20.72

General Hydroponics pH Down, gal

General Hydroponics

This concentrated solution from General Hydroponics is basic equipment for any hydroponic system. pH levels in water vary greatly from water source...

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$27.00
$20.72
Save 23%
Dosatron Nutrient Delivery System - Start Kit-NWGSupply.com
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$229.00
$197.19

Dosatron Nutrient Delivery System - Start Kit

Dosatron

Protect your Dosatron Nutrient Delivery System with all the necessary accessories for a successful installation. Includes incoming on/off ball valv...

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$229.00
$197.19
Save 14%
Dosatron Nutrient Delivery System - Mixing Chamber Kit-NWGSupply.com
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$129.95
$98.95

Dosatron Nutrient Delivery System - Mixing Chamber Kit

Dosatron

A well blended solution is key to a successful dosing system. One way to get that homogenized blend is to add a mixing chamber to the Nutrient Deli...

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$129.95
$98.95
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Milwaukee Instruments Dissolved Oxygen Meter-NWGSupply.com
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$301.99
$241.41

Milwaukee Instruments Dissolved Oxygen Meter

Milwaukee Instruments

Entry level, inexpensive Dissolved Oxygen Portable Meter for fast and reliable results. The MISM600 is a compact Portable Dissolved Oxygen meter wi...

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$301.99
$241.41
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Active Air Hygro-Thermometer-NWGSupply.com
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$21.95
$18.44

Active Air Hygro-Thermometer

Active Air

You'll find multiple uses for and multiple places to put this Active Air hygro-thermometer. Check the large number LCD display from a distance, and...

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$21.95
$18.44
Save 16%
Earth Juice Natural pH Up, 10 lb-NWGSupply.com
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$52.58
$50.55

Earth Juice Natural pH Up, 10 lb

Earth Juice

Proper pH levels are crucial for healthy plant growth. A pH that is too high or too low can reduce the availability of some nutrients. Effective in...

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$52.58
$50.55
Save 4%
24-7 Nutrient Monitor-NWGSupply.com
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$216.95
$178.45

24-7 Nutrient Monitor

Rose City

A great all around meter for nutrient applications needing constant monitoring. It measures PPM, pH and Temperature. Its large illuminated green LC...

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$216.95
$178.45
Save 18%
Digital PLUS Soil pH Meter-NWGSupply.com
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$28.99
$26.78

Digital PLUS Soil pH Meter

Rapitest

A handheld database containing the ideal soil pH for hundreds of the most commonly grown plants is paired with an accurate, easy-to-use tester in t...

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$28.99
$26.78
Save 8%
General Hydroponics pH Control Kit-NWGSupply.com
Save 19%
$17.50
$14.19

General Hydroponics pH Control Kit

General Hydroponics

The pH Control Kit includes one liquid pH test kit and 8 oz of each Up (base) and Down (acid). The pH Test Kit is a liquid tester that covers a pH ...

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$17.50
$14.19
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PH up Gallon (4/case)-NWGSupply.com
Save 33%
$107.60
$72.63

PH up Gallon (4/case)

General Hydroponics

To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to f...

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$107.60
$72.63
Save 33%
Dosatron Water Powered Doser 14 GPM 1:3000 to 1:333-NWGSupply.com
Save 27%
$1,156.69
$846.91

Dosatron Water Powered Doser 14 GPM 1:3000 to 1:333

Dosatron

Inject nutrients, supplements/additives and pH adjusters into irrigation water with ease. No electricity needed. Dosatron is a passive precision fe...

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$1,156.69
$846.91
Save 27%
Dosatron Water Powered Doser 40 GPM 1:500 to 1:50 - D8RE2 Unit Kit-NWGSupply.com
Save 35%
$1,344.49
$878.48

Dosatron Water Powered Doser 40 GPM 1:500 to 1:50 - D8RE2 Unit Kit

Dosatron

Installed directly in the water supply line, the Dosatron operates by using water pressure as the power source. The water activates the Dosatron, w...

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$1,344.49
$878.48
Save 35%
Mondi Mini Greenhouse Thermo-Hygrometer-NWGSupply.com
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$16.50
$16.10

Mondi Mini Greenhouse Thermo-Hygrometer

Mondi

Ensure the perfect temperature and humidity for plants through all growing stages with the Mondi Mini Greenhouse Thermo-Hygrometer. The thermo-hygr...

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$16.50
$16.10
Save 2%
Accurate pH 8 Soil pH & Moisture Meter-NWGSupply.com
Save 27%
$77.95
$56.70

Accurate pH 8 Soil pH & Moisture Meter

Rose City

The Accurate pH 7 utilizes the electronic ground field effect of the earth on two dissimilar metals. No batteries are required. This meter comes wi...

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$77.95
$56.70
Save 27%
Bluelab pH meter with probe-NWGSupply.com
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$210.00
$172.79

Bluelab pH meter with probe

BlueLab

The Bluelab pH Meter is used to accurately measure the pH value of a solution. Simply place the Bluelab pH probe into the solution and the reading ...

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$210.00
$172.79
Save 18%
Earth Juice Natural Down 25 lb-NWGSupply.com
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$168.50
$153.95

Earth Juice Natural Down 25 lb

Hydro Organics

pH adjusting crystals that will, once and for all, eliminate the hassles and worries of spilling, splashing and dealing with harsh liquid pH adjust...

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$168.50
$153.95
Save 9%
pH Down Acid Gallon (4/case)-NWGSupply.com
Save 33%
$107.60
$72.63

pH Down Acid Gallon (4/case)

General Hydroponics

To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to f...

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$107.60
$72.63
Save 33%
Dosatron Water Hammer Arrestor - 3/4 in Installation Kit-NWGSupply.com
$201.47

Dosatron Water Hammer Arrestor - 3/4 in Installation Kit

Dosatron

The Water Hammer Arrestor Kit for a 3/4 in system includes everything you need to stop water hammer on your system. The kit includes the following ...

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$201.47
Milwaukee MC720 pH Controller w/ Dosing Pump Kit-NWGSupply.com
Save 23%
$347.59
$268.78

Milwaukee MC720 pH Controller w/ Dosing Pump Kit

Milwaukee Instruments

The small and precise flow of the MP810 provides fully automated pH control of aqueous solutions in the hydroponic systems. It has been specificall...

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$347.59
$268.78
Save 23%
Bluelab PH Probe KCI Storage Solution-NWGSupply.com
Save 13%
$14.89
$12.90

Bluelab PH Probe KCI Storage Solution

BlueLab

The perfect solution to store and hydrate your Bluelab pH products. Bluelab knows it is extremely important to care for and store pH probes correct...

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$14.89
$12.90
Save 13%