FAQs

Default solution folder, feel free to edit or delete it.

How to deal with Er1 and Er2 when doing calibrations
Er1 will usually appear on the screen when users dip the probe into the wrong calibration solutions. For example, for pH calibration, the 1st point calibrat...
Wed, Apr 3, 2019 at 3:30 PM
Is the pH meter pre-calibrated?
All of our instruments are pre-calibrated before they are shipped. An easy determination is to look at the bottom of your LCD screen (follow manual instruc...
Wed, Apr 3, 2019 at 3:36 PM
What are the "white salts" oozing out of the probe and does it mean my meter is damaged or used?
The "white salts" are the Potassium Chloride (KCL). They can come from the storage solution in the cap or the inner reference solution in the pro...
Fri, Oct 25, 2019 at 5:14 AM
If the BPB sensor is not to be soaked in KCL, then why is there a fill line on the PC60 that surpasses the point of the BPB sensor?
The fill line on the probe cup is the minimum volume for test sample solution in the probe cap, not for the storage solution. We wouldn't recommend st...
Fri, Jul 19, 2019 at 2:49 PM
EC/TDS in Hydroponics
Electrical Conductivity (EC) is the ability of a solution to conduct electric current. Therefore conductivity is used to measure the concentration of dissol...
Tue, Nov 5, 2019 at 2:29 AM
The Easiest Way to Calculate the Slope of a pH Electrode
Make sure your standard buffer solutions are in good condition (fresh and uncontaminated) Make sure your standard buffer solutions are at room temperature...
Thu, Dec 19, 2019 at 4:32 PM
My tester’s screen is showing USA, P1. What is this?
Answer: There are 2 ways to power on your tester, and one of those ways will lead you to the Settings Menu for your meter. This happens when you hold the po...
Wed, Aug 5, 2020 at 7:04 AM
When I Try to Connect to ZenTest® App My Phone Asks for My Pin. What do I do?
If you see that question, please Exit out of that setting right away, as you will not need to use that prompt.   First, simply turn on your Bluetooth feat...
Thu, Nov 19, 2020 at 11:24 PM