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good drown
i'm not sure how much i really need one, i grow in soil, but i figure it cant hurt right?
so i have a few choices. which if these is the best purchase? i would love to get the cheapest one, but i have concerns it may not be that accurate. i dont think i need it to be super accurate, more consistent. here are my options...
$40
The Sunleaves TDS Essential Digital Pen measures total dissolved solids from 0 to 9,999 parts per million with a resolution of one part per million and includes a data hold feature for temporary TDS reading storage
$80
Oakton’s Waterproof EcoTestr TDS Low is a convenient TDS meter that doesn’t let dirt or moisture keep it from delivering accurate readings. It features a clear LCD display, a waterproof, dustproof housing, and automatic shutoff! It also has a self-adjusting TDS factor, allowing TDS measurement in an array of applications. Measures TDS from 0 to 1990 ppm with a resolution of 10 ppm. Unit measures 6 1/4" x 1 5/8" x 1 1/8" and includes four 1.5 V batteries that provide over 200 hours of use.
$105
The GroCheck TDS Meter provides easy-to-read TDS measurements quickly and accurately The GroCheck TDS Meter provides easy-to-read TDS measurements quickly and accurately. The meter is simple to set up, hangs on the wall and comes with a TDS probe, 6' cable, 12V DC adapter (no batteries needed), 1500 ppm calibration solution, calibration key and instructions. The GroCheck TDS Meter measures TDS with a range of 0-1990 ppm, a resolution of 10 ppm, and an accuracy of ±2% full scale. This meter also features an adjustable set point of 500 to 1600 ppm, and an LED alarm that flashes when the measurement varies from the set point ±100 ppm. The GroCheck TDS Meter is dependable, featuring a water-resistant, tough outer casing that protects the meter from water, dust and vapor. The meter carries a 2-year warranty, with a 1-year warranty for the probe.
$135
Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon from Bluelab. Truncheon reads in EC (0.2-3.6), CF (2-36), and TDS in both 500 and 700 ppm scales (100-2520). Accurate within ± 4% of reading with a resolution of .1 EC, the Truncheon runs on three AA alkaline batteries and comes with a five-year manufacturer's guarantee.
much obliged for your time
so i have a few choices. which if these is the best purchase? i would love to get the cheapest one, but i have concerns it may not be that accurate. i dont think i need it to be super accurate, more consistent. here are my options...
$40
The Sunleaves TDS Essential Digital Pen measures total dissolved solids from 0 to 9,999 parts per million with a resolution of one part per million and includes a data hold feature for temporary TDS reading storage
$80
Oakton’s Waterproof EcoTestr TDS Low is a convenient TDS meter that doesn’t let dirt or moisture keep it from delivering accurate readings. It features a clear LCD display, a waterproof, dustproof housing, and automatic shutoff! It also has a self-adjusting TDS factor, allowing TDS measurement in an array of applications. Measures TDS from 0 to 1990 ppm with a resolution of 10 ppm. Unit measures 6 1/4" x 1 5/8" x 1 1/8" and includes four 1.5 V batteries that provide over 200 hours of use.
$105
The GroCheck TDS Meter provides easy-to-read TDS measurements quickly and accurately The GroCheck TDS Meter provides easy-to-read TDS measurements quickly and accurately. The meter is simple to set up, hangs on the wall and comes with a TDS probe, 6' cable, 12V DC adapter (no batteries needed), 1500 ppm calibration solution, calibration key and instructions. The GroCheck TDS Meter measures TDS with a range of 0-1990 ppm, a resolution of 10 ppm, and an accuracy of ±2% full scale. This meter also features an adjustable set point of 500 to 1600 ppm, and an LED alarm that flashes when the measurement varies from the set point ±100 ppm. The GroCheck TDS Meter is dependable, featuring a water-resistant, tough outer casing that protects the meter from water, dust and vapor. The meter carries a 2-year warranty, with a 1-year warranty for the probe.
$135
Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon from Bluelab. Truncheon reads in EC (0.2-3.6), CF (2-36), and TDS in both 500 and 700 ppm scales (100-2520). Accurate within ± 4% of reading with a resolution of .1 EC, the Truncheon runs on three AA alkaline batteries and comes with a five-year manufacturer's guarantee.
much obliged for your time