Test Equipment & Meters

Multi-Parameter Monitor
$210.99
This well-built Multi-Parameter Monitor measures six different parameters with high accuracy. Measures pH/PPM/EC/CF/Temperature (F◦ / C◦). allowing flexibility in nutrient readings as well as pH and temperature. May be used as a portable meter or wall-mounted monitor. Replaceable pH probe. Automatic temperature compensation. Operates on a DC 6-volt supply or four 1.5-volt batteries. Replaceable pH probe. Range: pH 0.00-14.00 PPM 0-19990 EC 0-19.99 CF 0-199 Accuracy: PH 0.1 EC/CF/PPM 2.0% Temperature: Fahrenheit -58~ 158 Centigrade –50~70

EcoStick EC/PPM/CF Meter
$99.99
This incredibly accurate meter is fully waterproof and simple to use. Its rugged chassis and precision components make it super accurate every time you use it. Just dip the probe end into the nutrient and the unit turns on and off automatically. The reading is instantly displayed on an intuitive and easy to read scale of waterproof LED lights. Fully waterproof. Measures three parameters CF/PPM/EC. Factory calibrated, never needs calibrating. Turns on/off automatically. No external knobs or switches. Broad range covers many crops.

pH STICK
$119.99
You can't beat the price! The rugged pH stick features an easy-to-read illuminated display, one-touch calibration, and Automatic Temperature Compensation. . Just dip the probe end into the nutrient and the unit turns on and off automatically. The reading is instantly displayed on an intuitive and easy to read scale of waterproof LED lights.Fully waterproof with no external knobs or switches. Replaceable pH electrode. Extremely accurate and reliable.

Waterproof EC/CF/TDS Pen High Accuracy
$74.99
Great price! This fully-waterproof nutrient meter has a large and easy to read LCD Display·Reads three parameters EC/CF/TDS to make measurements easy· Highly accurate readings. Automatic temperature compensation and a data hold button. Replaceable probe· Includes carrying case and screwdriver. Range: EC 0.00-19.99, CF 0.00-199, TDS 0.00-19990.

Waterproof pH Pen High Accuracy
$64.99
Completely waterproof meter has a large and easy to read LCD Display· Highly accurate readings. Automatic temperature compensation and data hold button. Includes carrying case and screwdriver. Range: 0-14.00, Accuracy: 0.1, pH Resolution: 0.01 pH.

BLUELAB PPM/EC TRUNCHEON
$124.99
The amazing Truncheon EC meter from Bluelab uses flashing lights to show the EC, CF and PPM readings. Truncheons are very accurate, reliable, and come with a five year warranty.

BLUELAB pH TRUNCHEON
$169.99
With it's easy to read illuminated display, one-touch calibration system, super clear instructions and no buttons to push, measuring pH just got a whole lot simpler. The long lasting probe is replaceable; auto on just like the Bluelab Truncheon; Automatic Temperature Compensation and a scale of 2.0pH - 10.9pH. The Bluelab pH Truncheon has a Double Junction probe for longer life. Every Bluelab pH Truncheon comes with three well packaged Contact Rings. The contact ring stops contamination getting into the reference cell and extends the life of the probe.

Hanna pH & PPM Combo Monitor (wall-mount)
$169.99
Hanna Instruments GROCHEK COMBO continuously monitors both pH and total dissolved solids in one convenient unit.

Hanna pH & PPM Combo Monitor (hand-held)
$219.99
Hanna Instruments combination meter reads both pH and total dissolved solids in one convenient unit. Portable, hand-held meter allows readings to be taken in any location. Measures in EC as well as pH and PPM from the same probe.

OAKTON WATERPROOF pH & PPM PENS
Oakton’s portable testers provide fast accurate LCD readings to optimize nutrient strength during flowering. Reliable, waterproof, dust-proof housing and replaceable electrode provide long life and value. Auto shutoff conserves battery life.
Oakton Waterproof pH Pen Basic $80.99

Oakton Waterproof PPM Pen $89.99

HANNA WATERPROOF pH & PPM PENS
Hanna Instruments has improved these affordable waterproof testers. Reliable pen, it just doesn't have the bells and whistles of other models. Designed for wet areas.
Hanna Waterproof pH Pen $60.99

Hanna Waterproof PPM Pen $69.99

MAINTENANCE SUPPLIES for METERS
We stock all the supplies necessary to keep your meters working properly. Meters are expensive. If you follow the manufacturer's care instructions, the meters will last a long time. Most problems with meters occur because of neglect or abuse. Click on the above link for information on the following supplies.

Replacement Batteries 1.4 volt (4 pack) $6.99
7.0 pH Calibrating Solution 2oz. $2.50
7.0 pH Calibrating Solution 230 ml $12.99
800 PPM calibrating Solutions (2oz.) $2.50
800 PPM calibrating Solutions (8oz.) $8.99
1500 PPM Calibrating Solution (230 ml) $12.95
Electrode Cleaning Solution for Meters(8 oz.) $9.99
Storage Solution for Meters (8 oz.) $8.99

GH MANUAL pH TEST KIT
$6.99
General Hydroponics pH Test Indicator (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. Use 3 drops per 5mL of solution).

CO2 Test Kit
Basic CO2 test kit with 140 cc syringe, two CO2 test tubes and instructions. A must have for setting up or checking CO². Pulls an air sample through test tube (each tube is good for only one reading) and gives ambient reading. Saves CO2. Extra CO2 test tubes available.
CO2 Test Kit $21.00

Additional CO2 Test Tubes $6.50

Combination Temperature-Humidity Meter
$9.99
Combination Meter has magnifying tube thermometer and easy-to-read hygrometer. Wall-mounted.