All categories
Complete Kits
Climate
Grow Media
Water
Lighting
Nutrients
Plant Care
Containers
Propagation
Seeds / Live Plants / Mushrooms
YRG Gear
Education
Weekly Specials
0
Home
All Products
Complete Kits
Hydroponic Starter Kits
Propagation Starter Kits
Climate
Tents & Greenhouses
Tarps
Tents
Greenhouses
Air Filtration & Odor Control
CO2 Enrichment
Controllers & Timers
Fans & Blowers
Ventilation & Ducting
Grow Media
Clay Pebbles
Coco Coir
Compost
Perlite
Rockwool
Soil
Vermiculite
Worm Castings
Water
Air Pumps & Stones
Deep Water Culture
Floor Trays & Flood Tables
Reservoirs & Tanks
Systems
Tubing & Fittings
Water Filtration & Treatment
Water Pumps
Lighting
Fluorescent
High Intensity Discharge (HID)
Ballasts
Ceramic Metal Halide (CMH)
Metal Halide (MH)
High Pressure Sodium (HPS)
Wings, Hoods & Reflectors
Light Emitting Diode (LED)
Lighting Accessories
Nutrients
Grow Nutrients
Bloom Nutrients
Micro Nutrients
All-Stage Nutrients
Root Enhancers
Supplements
Cal-Mag
Compost Tea
Dry Amendments
Fish & Marine
Flush & Rinse
Microbes & Enzymes
Seaweed and Kelp
Silica
Sweetners & Finishers
Plant Care
Harvest Solutions
Measuring & Dosing
Meters & Testing
Miscellaneous
Pest & Disease Control
pH Control
Pruning Shears & Tools
Sprayers & Watering Cans
Trellis Netting & Plant Support
Containers
Buckets
Pots & Baskets
Saucers & Risers
Propagation
Cloning Accessories
Cloning Gels & Rooting Hormones
Cloning Systems
Seedling Heat Mats
Trays, Domes & Root Cubes
Seeds / Live Plants / Mushrooms
Live Plants
Mushrooms
Seeds
YRG Gear
Apparel
Gift Cards
Education
Coffee & Clones
Mycology
Weekly Specials
Clearance Items
Login / Register
✕
Cart
items
No products found...
Login
Log in if you have an account
Login
Dont have an account?
Register
Forgot your password?
Home
Plant Care
Meters & Testing
Meters & Testing
Showing 1 - 16 of 16
Default
Popularity
Newest products
Lowest price
Highest price
Name ascending
Name descending
100
More filters
✕
Price
Min: $
0
Max: $
90
Categories
Complete Kits
Hydroponic Starter Kits
(5)
Propagation Starter Kits
(2)
Climate
Tents & Greenhouses
(76)
Tarps
(13)
Tents
(62)
Greenhouses
(1)
Air Filtration & Odor Control
(23)
CO2 Enrichment
(9)
Controllers & Timers
(23)
Fans & Blowers
(32)
Ventilation & Ducting
(33)
Grow Media
Clay Pebbles
(10)
Coco Coir
(17)
Compost
(4)
Perlite
(8)
Rockwool
(10)
Soil
(51)
Vermiculite
(4)
Worm Castings
(2)
Water
Air Pumps & Stones
(26)
Deep Water Culture
(8)
Floor Trays & Flood Tables
(34)
Reservoirs & Tanks
(14)
Systems
(93)
Tubing & Fittings
(144)
Water Filtration & Treatment
(27)
Water Pumps
(21)
Lighting
Fluorescent
(37)
High Intensity Discharge (HID)
(32)
Ballasts
(4)
Ceramic Metal Halide (CMH)
(5)
Metal Halide (MH)
(5)
High Pressure Sodium (HPS)
(12)
Wings, Hoods & Reflectors
(6)
Light Emitting Diode (LED)
(88)
Lighting Accessories
(30)
Nutrients
Grow Nutrients
(92)
Bloom Nutrients
(138)
Micro Nutrients
(25)
All-Stage Nutrients
(60)
Root Enhancers
(39)
Supplements
(222)
Cal-Mag
(27)
Compost Tea
(7)
Dry Amendments
(55)
Fish & Marine
(14)
Flush & Rinse
(13)
Microbes & Enzymes
(38)
Seaweed and Kelp
(13)
Silica
(10)
Sweetners & Finishers
(49)
Plant Care
Harvest Solutions
(43)
Measuring & Dosing
(24)
Meters & Testing
(43)
Miscellaneous
(22)
Pest & Disease Control
(71)
pH Control
(33)
Pruning Shears & Tools
(18)
Sprayers & Watering Cans
(17)
Trellis Netting & Plant Support
(44)
Containers
Buckets
(15)
Pots & Baskets
(104)
Saucers & Risers
(36)
Propagation
Cloning Accessories
(6)
Cloning Gels & Rooting Hormones
(19)
Cloning Systems
(6)
Seedling Heat Mats
(5)
Trays, Domes & Root Cubes
(42)
Seeds / Live Plants / Mushrooms
Live Plants
(132)
Mushrooms
(8)
Seeds
(275)
YRG Gear
Apparel
(6)
Gift Cards
(3)
Education
Coffee & Clones
(61)
Mycology
(16)
Weekly Specials
Clearance Items
(53)
Brands
All brands
Active Air
BlueLab
General Hydroponics
GroLine
GroStar
HM Digital
Hanna
Luster Leaf
Soil Savvy
Sure Test
BlueLab
2.77 EC Conductivity Standard Solution
•
•
•
•
•
Article code
1884
Select:
*
Quantity:
+
-
$12.95
Add to cart
BlueLab
2.77 EC Conductivity Standard Solution
•
•
•
•
•
$12.95
Active Air
Active Air Hygro-Thermometer
•
•
•
•
•
Article code
3195
Select:
*
Quantity:
+
-
$21.95
Add to cart
Active Air
Active Air Hygro-Thermometer
•
•
•
•
•
$21.95
Hanna
Gro-Line pH Digital Meter (waterproof)
•
•
•
•
•
Article code
1446
Select:
*
Quantity:
+
-
$85.95
Add to cart
Hanna
Gro-Line pH Digital Meter (waterproof)
•
•
•
•
•
$85.95
Hanna
GroLine pH 4.01 Buffer Sachets (20 mL)
•
•
•
•
•
Article code
2462
Select:
*
Quantity:
+
-
$1.95
Add to cart
Hanna
GroLine pH 4.01 Buffer Sachets (20 mL)
•
•
•
•
•
$1.95
Hanna
GroLine pH 7.01 Buffer Sachets (20 mL)
•
•
•
•
•
Article code
2461
Select:
*
Quantity:
+
-
$1.95
Add to cart
Hanna
GroLine pH 7.01 Buffer Sachets (20 mL)
•
•
•
•
•
$1.95
GroStar
GroStar pH calibration Solution (pH 4)
•
•
•
•
•
Article code
4028
Select:
*
Quantity:
+
-
$12.95
Add to cart
GroStar
GroStar pH calibration Solution (pH 4)
•
•
•
•
•
$12.95
GroStar
GroStar pH calibration Solution (pH 7, 8oz.)
•
•
•
•
•
Article code
4030
Select:
*
Quantity:
+
-
$12.95
Add to cart
GroStar
GroStar pH calibration Solution (pH 7, 8oz.)
•
•
•
•
•
$12.95
Hanna
Hanna (1413) µS/cm Conductivity Standard (20ml)
•
•
•
•
•
Article code
2460
Select:
*
Quantity:
+
-
$1.95
Add to cart
Hanna
Hanna (1413) µS/cm Conductivity Standard (20ml)
•
•
•
•
•
$1.95
HM Digital
HM Digital pH 4.0 buffer solution (individual packet)
•
•
•
•
•
Article code
4122
Select:
*
Quantity:
+
-
$2.95
Add to cart
HM Digital
HM Digital pH 4.0 buffer solution (individual packet)
•
•
•
•
•
$2.95
HM Digital
HM Digital pH 7.0 buffer solution (individual packet)
•
•
•
•
•
Article code
4120
Select:
*
Quantity:
+
-
$2.95
Add to cart
HM Digital
HM Digital pH 7.0 buffer solution (individual packet)
•
•
•
•
•
$2.95
General Hydroponics
pH Test Kit (1oz)
•
•
•
•
•
Article code
0732
Select:
*
Quantity:
+
-
$8.95
Add to cart
General Hydroponics
pH Test Kit (1oz)
•
•
•
•
•
$8.95
HM Digital
PPM/TDS Calibration Solution (3oz )
•
•
•
•
•
Article code
1749
Select:
*
Quantity:
+
-
$9.95
Add to cart
HM Digital
PPM/TDS Calibration Solution (3oz )
•
•
•
•
•
$9.95
GroLine
Quick Calibration Solution for GroLine pH and EC Meters (1 x 20 mL sachets)
•
•
•
•
•
Article code
2546
Select:
*
Quantity:
+
-
$1.95
Add to cart
GroLine
Quick Calibration Solution for GroLine pH and EC Meters (1 x 20 mL sachets)
•
•
•
•
•
$1.95
Luster Leaf
Rapitest Soil Test Kit
•
•
•
•
•
Article code
0776
Select:
*
Quantity:
+
-
$17.95
Add to cart
Luster Leaf
Rapitest Soil Test Kit
•
•
•
•
•
$17.95
Soil Savvy
Soil Test Kit
•
•
•
•
•
Article code
0736
Select:
*
Quantity:
+
-
$34.95
Add to cart
Soil Savvy
Soil Test Kit
•
•
•
•
•
$34.95
Sure Test
Sure Test® Temperature and Relative Humidity Data-Logger
•
•
•
•
•
Article code
2144
Select:
*
Quantity:
+
-
$89.95
Add to cart
Sure Test
Sure Test® Temperature and Relative Humidity Data-Logger
•
•
•
•
•
$89.95