Hanna pH & PPM Combo Monitor (wall-mount)
$184.99
Hanna Instruments GROCHEK COMBO continuously monitors both pH and total dissolved solids in one convenient unit.
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Hanna pH & PPM Combo Monitor (hand-held) HI9813-0
$236.99
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.
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Probe for Hanna pH & PPM Combo Monitor (hand-held) HI1285-0
$124.99
Hanna pH & PPM Combo Monitor HI9813-0 (hand-held)Replacement Probe
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BLUELAB PPM/EC TRUNCHEON
$128.99
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.
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BLUELAB pH METER
$265.99
Portable, easy-to-use pH meter that accurately measures pH anytime, anywhere to help you maintain optimum levels and improve plant development.Quality pH probe, calibration solutions included.
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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 $69.99
Hanna Waterproof PPM Pen $69.99
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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 Ecotester $70.99
Oakton PPM Pen Ultra Basic $89.99
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Nutra-Dip Tri Meter (ph, PPM, Temp)
$222.99
This well-built Multi-Parameter Monitor measures three different parameters with high accuracy. Measures pH/PPM/Temperature. May be used as a portable meter or wall-mounted monitor. Replaceable pH probe. Automatic temperature compensation. Replaceable pH probe.
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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
Electrode Cleaning Solution for Meters(8 oz.) $9.99
Storage Solution for Meters (8 oz.) $8.99
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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).
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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
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COMBINATION TEMP/HUMIDITY METER
$9.99
Combination Meter has magnifying tube thermometer and easy-to-read hygrometer. Wall-mounted.
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Batteries for PH/TDS Pen
$6.99
Contains four (4) batteries per pack, 6 packs per case.
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