Showing all 12 results
TDS Testers
Knowing the dissolved solids level of your hydroponic solution is critical when adding supplements and maintaining optimum levels of nutrients. A professional quality TDS meter will give you accurate information on your solution’s total dissolved solids or electrical conductivity (EC). Want the fastest, most abundant growth possible? Get reading!
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PPM Pen
Use to maximize plant health, prevent burn and ensure optimum plant yields.
$94.95$56.30 -
Combo Meter
All you need for simple and reliable crop management and it’s all within arms reach.
$309.95$184.80 -
HM Digital (TDS-3)
This handheld pen includes a large screen and a built-in thermometer at a great price.
$36.95$17.95 -
Primo Tester
A fast and dependable way to measure the total dissolved solids in water samples.
$57.95$33.59 -
Combo (HI991404)
Continuously monitors the three most crucial nutrient ranges in hydroponics.
$259.95$140.00 -
Continuous Indicator (HI981404N)
Ideal for hydroponics applications where constant measurements are required.
$224.95$134.99 -
DiST5 (HI98311)
Delivers accurate results with automatic calibration and temperature compensation.
$140.95$75.00 -
Gro’Chek EC (HI983302N)
Easy to use, just hang above the sample to be monitored or take it along with you!
$119.95$62.00 -
Gro’Chek TDS (HI983301N)
Ships complete with a low-maintenance probe and complete instructions.
$119.95$68.97 -
Guardian Monitor
Easy to use, just plug it in and place the probes in your nutrient reservoir.
$394.95$236.50 -
Portable (HI9813-6N)
Large dials located on the front panel makes calibration quick and simple.
$274.95$163.79 -
Truncheon
It is essential to KNOW the strength of the solution before feeding your plants.
$144.95$84.00
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