Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium (pH Meter Kit)

Price: $13.99
(as of Nov 06, 2025 05:45:32 UTC – Details)

Product description

Instructions for use of PH calibration powder:

Calibration powder: pH standard solid substance. It can be used after adding water. Suitable for the calibration of any type of ph meter. Each package can prepare 250ML standard solution.

(Be sure to add water according to the required ratio, otherwise it will affect the accuracy of the calibration and increase the error)

PH + 3-In-1 TDS & EC & temperature meter

Includes 3 in 1 TDS & EC & temperature and digital LCD pH meter.

Using Ruolan’ s PH meter&TDS, you can test pH, TDS and EC (conductivity), water quality and temperature to ensure that your drinking water or other water is safe and healthy

Matters needing attention:

PH meter has been calibrated before delivery, the buyer does not need to re-calibrate after receiving the goods!

In the following cases, the PH meter must be re-calibrated:

1. Has been used for a long time after calibration;

2. Special electrode use Frequently;

3. The measurement accuracy requirements are relatively high.

Battery installation:

If the backlight brightness drops significantly or the display value is blurred, the battery should be replaced. When replacing the battery, just pull out the battery compartment and replace it. NoteThe polarity of the battery.

TDS meter is equipped with automatic shutdown function, it will automatic shut off if there a period of time inactive to help you save on battery power and With the lock screen function, the instrument will lock the reading results, easy for you to read and record data.

Tips：

Please note that the PH pen probe is a glass product and is a fragile product. Please do not collide with things. Once the damage is not replaceable, you must protect the probe. After use, use absorbent paper to gently absorb the water on the probe.

Steps to use the PH meter：

The PH meter is placed in the liquid test until the liquid covers the immersion line, if conditions permit, the solution may be immersed slightly above the immersion line, but be careful not to immerse the maximum immersion line.Stir gently until the display value is stable, then read the display value.After use, clean the electrode with water to reduce contamination.The electrode can be serviced by dropping a few drops of saturated KCl solution into the protective sleeve.

Standard configuration：

1XTDS meter

1XPH meter

6X calibration powder

2X gift box

2X instruction manual

Package Dimensions ‏ : ‎ 7.8 x 3.39 x 1.42 inches; 5.29 ounces
Item model number ‏ : ‎ 7O-ZKVI-86AV
Date First Available ‏ : ‎ September 7, 2020
Manufacturer ‏ : ‎ Ruolan
ASIN ‏ : ‎ B08HM71K96
Best Sellers Rank: #1,707 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2 in Lab pH Meters
Customer Reviews: 3.9 3.9 out of 5 stars 11,502 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

【Value Combo Set】3-in-1 TDS & EC & Temperature Meter (Blue) + Digital LCD pH Meter (Yellow). Products come protected in a packing box, making them easy to carry and store indoors.
【Automatic Shutdown Function】Equipped with an automatic shutdown function, the meter will turn off automatically after a period of inactivity, helping to save battery power.
【Automatic Temperature Compensation】No need to worry about the temperature of the liquid being measured, as our meter features auto temperature compensation. It adjusts according to water temperature and quality to accurately determine liquid temperature within the test range.
【Mini-sized & Ideal Tester】The compact design of Ruolan pH and TDS meters makes them convenient to carry anywhere. They are ideal water testers for drinking water, water purifiers, fruit and vegetable juices, aquariums, agriculture, swimming pools, cosmetics, and more.
【Calibration Powder】Three packs of calibration powder are included to help you test the accuracy of our meter.