---
product_id: 69753715
title: "GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool"
brand: "gudoqi"
price: "11.12 OMR"
currency: OMR
in_stock: true
reviews_count: 13
category: "Gu Do Qi"
url: https://www.desertcart.com.om/products/69753715-gudoqi-ph-meter-pond-water-testing-kit-ppm-meter-4
store_origin: OM
region: Oman
---

# 0.01 pH resolution Auto power-off & hold function Automatic temperature compensation GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool

**Brand:** gudoqi
**Price:** 11.12 OMR
**Availability:** ✅ In Stock

## Summary

> 💧 Master your water quality like a pro — because precision is the new power.

## Quick Answers

- **What is this?** GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool by gudoqi
- **How much does it cost?** 11.12 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/69753715-gudoqi-ph-meter-pond-water-testing-kit-ppm-meter-4)

## Best For

- gudoqi enthusiasts

## Why This Product

- Trusted gudoqi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Sensing, Zero Guesswork:** Automatic temperature compensation adapts readings for flawless precision every time.
- • **Versatility Meets Portability:** Compact handheld design perfect for hydroponics, aquariums, pools, and RO systems.
- • **Precision that Powers Your Growth:** Ultra-fine 0.01 pH accuracy ensures your water quality is always spot-on.
- • **Stay Ahead with Real-Time Monitoring:** 4-in-1 TDS/EC/Temperature/pH testing keeps your water ecosystem thriving and balanced.
- • **Effortless Operation, Instant Results:** One-touch HOLD locks your measurement; auto shut-off saves battery life.

## Overview

The GuDoQi 4-in-1 Digital Water Tester delivers lab-grade precision with 0.01 pH resolution and ±2% accuracy for TDS and conductivity. Featuring automatic temperature compensation and an intuitive hold function, this compact, handheld device is engineered for seamless water quality monitoring across hydroponics, aquariums, pools, and RO systems. Its versatile, easy-to-use design empowers professionals and enthusiasts alike to maintain optimal water conditions effortlessly.

## Description

Product Description PH and TDS Meter combo PH and TDS meters all are accurate, reliable and easy to use Digital pH meter works for testing water's pH, 3-in-1 TDS meter works for testing water's EC, TDS and temperature They are used for testing liquid's quality, such as drinking water, hydroponics, aquaculture, RO system, aquariums, swimming pools, SPA and so on Please kindly note as below PH meter's accuracy was improved, and it will take longer in testing. In calibrating, pressing CAL button after pH meter reads calibration solution stably. 3-in-1 TDS meter was calibrated by 1413 solution in producing, does not need to recalibrate. 3-in-1 TDS meter's probe is titanium alloy, doesn't suit for testing sea water PH Meter Specifications Measure Range: 0.00 - 14.00 pH Resolution: 0.01 pH Accuracy: ± 0.01 pH Automatic temperature compensation: 0 - 60°C / 32 - 140°F Calibration: Two Points Automatic Calibration Button Battery: 2 x 1.5V LR44 (Battery included) Dimension: 15.5*3.1*1.8cm / 6.10*1.22*0.71inch Weight: 50g / 0.11lb TDS EC Temperature Meter Specifications 4 Display modes: Press SHIFT button: TDS - ppm & °C, EC - µs/cm & °C, TDS - ppm & °F, EC - µs/cm & °F Measurement Range: Conductivity: 0 -- 9999us/cm TDS: 0-9999ppm Accuracy: 2% Battery: 3V CR2032 (Battery included) Dimension: 15.4*3*1.4 cm / 6.06*1.81*0.55inch Weight: 59g / 0.13 Package including 1 x pH Meter 1 x TDS EC Temperature Meter 1 x Calibration kits 6 x Button battery Calibration of the pH meter 1. The calibration powder with 250ml of distilled water or pure water (Do not use tap water and mineral water) to open. Dip the pH electrode into a mixed phosphate standard buffer at pH 6.86 and shake gently 2. Push the CAL button, it will auto calibration until the displayed value and the standard buffer solution at pH 6.86 consistent with the ambient temperature. 3. The same as above, the electrode was inserted into pH4.00 Phosphorous stupid acid potassium bicarbonate standard buffer solution 4. About two minutes or so. The displayed value should be within the error tolerance compared to the pH value of the buffer solution Widely Use Application Home drink water Hydroponics Aquarium Swimming pools

Review: Good. - Good.
Review: Hydroponics are thriving - Got these to test the Ph and EC levels of the nutrient solution in my hydroponics systems and they are currently doing great. The product is really handy to keep the Ph and EC levels steady in my nutrient solution and the multiple readings can be taken in a row which is really handy. The Ph tester even comes with different packages of Ph buffer solution so that's really handy as well. My plants in my hydroponics system are doing great right now thanks to this product. Overall really like the product.

## Features

- Easy to operate: TDS meter locks the measurement result when you press the "HOLD" button and switches off automatically after a few minutes of non-use. The pH meter has an automatic calibration function and you can take a quick reading
- Precise and reliable: pH resolution is 0.01 pH, accuracy ± 0.01 pH. TDS meter rang 0~9999ppm, conductivity 0~9999 us/cm, accuracy ± 2%. TDS 0 ~ 9999 ppm
- Automatic temperature compensation: ATC takes temperature changes into account automatically. Switch it on and put it in liquid, read display
- Versatile use: Ideal for household or laboratory; suitable for testing the pH of drinking water, pool, aquarium, RO system, spa or hydroponics
- Easy to carry: Handheld design and small size make it convenient for you to carry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FD21D2B |
| Best Sellers Rank | 19,273 in Garden ( See Top 100 in Garden ) 5 in Water Garden & Pond Test Kits |
| Brand | GuDoQi |
| Country Of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 2,929 Reviews |
| Item Weight | 50 Grams |
| Item weight | 50 Grams |
| Manufacturer | QBY |
| Manufacturer Part Number | CE1759 |
| Material | Plastic |
| Model Number | PH02, A1 |
| UPC | 603977219989 |

## Product Details

- **Brand:** GuDoQi
- **Manufacturer:** QBY
- **Material:** Plastic
- **UPC:** 603977219989

## Images

![GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool - Image 1](https://m.media-amazon.com/images/I/516u2OSWSML.jpg)
![GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool - Image 2](https://m.media-amazon.com/images/I/71myc8paVTL.jpg)
![GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool - Image 3](https://m.media-amazon.com/images/I/615H-8wdYbL.jpg)
![GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool - Image 4](https://m.media-amazon.com/images/I/71FmSn4gE+L.jpg)
![GuDoQi pH Meter, Pond Water Testing Kit, PPM Meter, 4-in-1 TDS/EC/Temperature/pH Tester for Drinking Water, 0.01 Resolution, Digital Water Tester for Hydroponics, RO System, Aquarium, Pool - Image 5](https://m.media-amazon.com/images/I/61rBW56Sb8L.jpg)

## Questions & Answers

**Q: Can use PH meter to check hot water?**
A: This PH meter applicable water temperature range is 0-80 degrees Celsius

**Q: Hi, can i check if it's rain or tap water?**
A: Probably not. 
Rain water will, depending on where you are usually be softer than the tap water, this won't help with hardness, and have no additives fluoride and chlorine,  and maybe more acidic,.
Or, without serious kit for testing appear identical with this ph meter.

**Q: Does this test for TDS ?**
A: This product contains a TDS and PH tester. It can test for TDS

**Q: Do either or both of these have a backlight?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good.
*by S***J on 24 April 2026*

Good.

### ⭐⭐⭐⭐⭐ Hydroponics are thriving
*by A***T on 8 October 2024*

Got these to test the Ph and EC levels of the nutrient solution in my hydroponics systems and they are currently doing great. The product is really handy to keep the Ph and EC levels steady in my nutrient solution and the multiple readings can be taken in a row which is really handy. The Ph tester even comes with different packages of Ph buffer solution so that's really handy as well. My plants in my hydroponics system are doing great right now thanks to this product. Overall really like the product.

### ⭐⭐⭐⭐ Quality
*by P***L on 8 January 2025*

Great piece of kit. Comes complete with spare batteries. Excellent price and very reliable.

## Frequently Bought Together

- GuDoQi PH Meter, TDS Meter Combo, Pool Water Test Kit, PH Tester Digital, PPM Meter, 0.01 Resolution TDS PH EC Temperature 4 in 1 Set for Drinking Water, Hydroponics, RO System, Aquarium, Swimming
- General Hydroponics CALiMAGic Quart
- General Hydroponics pH Control Kit

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-05-30*