PH Meter, TDS PPM Meter, Soil PH Tester, PH/EC Digital Kit, 3 Pack

accurate of PPM but seems to be accurate 38-40 PPM tap water 0-1 on distilled water -/+1Ph digital meter is accurate to the calibration test sets with in the 0.01 +/- Does not do well with very high debris in liquid or highly oxygenated water and must sit for 5-10 minutes before accurate measurementSoil tester is iffy when compared to calibrated meters and would not fully rely on for PH in high acidity, moisture is accurately measured, light intensity also fairly accurateWould buy again and recommend to friend and family. Great value for quality.

Worked perfectly

As with any manufacturing I think the readings are a little off. Is okay it was more just for an idea of where things are.

Arrived as advertised!

The testers all work ok. However there was no guides or instructions on how to use them. Even after looking online I still didn't find much for instructions on these testers.

This product arrived dead not working. So that's about the end of my review. Since I can't review a product that doesn't even work. More and more Amazon products are getting worse and worse. Unbelievable. Also it was missing the soil tester. So let alone did it come broken and not working it's missing parts.

Very useful - easy to use and read. I didn't rate the accuracy of the instruments - calibration would really need to be done in a lab. Having said that, the EC meter gave a range of comparative readings that were very useful for what I was doing. For moisture, my field assessments were consistent with the readings. An incredible package value.

They work