---
product_id: 640372385
title: "Ruolan PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow)"
brand: "ruolan"
price: "Bs.463"
currency: BOB
in_stock: true
reviews_count: 5
category: "Ruolan"
url: https://www.desertcart.bo/products/640372385-ruolan-ph-meter-for-water-hydroponics-digital-ph-tester-pen
store_origin: BO
region: Bolivia
---

# pocket-sized portability 0.01 pH precision 3 calibration kits included Ruolan PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow)

**Brand:** ruolan
**Price:** Bs.463
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the curve with precision pH testing in your pocket!

## Quick Answers

- **What is this?** Ruolan PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow) by ruolan
- **How much does it cost?** Bs.463 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/640372385-ruolan-ph-meter-for-water-hydroponics-digital-ph-tester-pen)

## Best For

- ruolan enthusiasts

## Why This Product

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

## Key Features

- • **Calibrated Confidence:** Comes with 3 calibration packages to guarantee reliable and consistent results every time.
- • **Precision that Matters:** Ultra-sensitive electrode delivers 0.01 pH accuracy for flawless water quality readings.
- • **Versatile Water Testing:** Perfect for hydroponics, aquariums, pools, drinking water, and more—your all-in-one water quality essential.
- • **Pocket-Ready Portability:** Compact, lightweight design fits effortlessly in your pocket—test water quality anytime, anywhere.
- • **Smart Temperature Compensation:** Auto-adjusts for water temperature variations, ensuring precise pH readings without extra hassle.

## Overview

The RuolanPH Meter is a high-accuracy digital pH tester pen with 0.01 precision and a 0-14 pH range. Featuring 3 calibration kits and automatic temperature compensation, it ensures reliable readings across diverse water environments—from hydroponics and aquariums to pools and drinking water. Its compact, pocket-sized design makes it the ultimate on-the-go tool for professionals and enthusiasts committed to water quality excellence.

## 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)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.Precautions: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.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.Standard configuration1XPH meter, 3X calibration powder, 1X gift box, 1X instruction manual

Review: This item is necessary to maintain proper pH levels in the water. This water is utilized for feeding the plants which are highly sensitive to high pH values. I have actually recommended this item for purchase to another individual and he to agrees that this is a very good product.
Review: Very useless device. Does not provide a stable reading. I can’t even calibrate it because it just keeps going up and down non-stop. Fluctuates almost 2pH up and down. Highly recommend not buying this.

## Features

- 【3 calibration packages】Let you no longer worry about whether the ph meter is accurate, the 3 calibration packages we give can help you test whether our ph meter is accurate.
- 【Mini Size】The mini size ph meter we designed allows you to easily put it in your pocket, so you can take measurements anytime, anywhere. It can help you test it whether you take it to the pool, on a trip, to the beach or camping.
- 【Family Essentials】As a tool to improve the quality of life. Can be used to test drinking water, swimming pools, PH balance in aquarium, RO system, spa or hydroponics. Basically all the environments that need to test PH value can use this tester to get accurate data.
- 【High Accuracy】ph tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen.read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading.
- 【Automatic Temperature Compensation】No more need to take care about the temperature of testing liquid,as the Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Ruolan |
| Part number | ILEE |
| Item Weight | 100 g |
| Package Dimensions | 17.4 x 5.41 x 3.2 cm; 100 g |
| Batteries | 1 CR2 batteries required. |
| Manufacturer reference | ILEE |
| Color | Yellow |
| Style | pH Meter Yellow |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Ruolan PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Yellow) - Image 1](https://m.media-amazon.com/images/I/61BUiZjq72L.jpg)

## Questions & Answers

**Q: How do I get warranty support? I have had this for 3 months and it quit working, just shows zero with an occasional flash of random numbers.**
A: It's the horrible design in the battery tray.  The pressure that keeps the metal contacts down also lifts the entire battery tray away from it's case making it lose contact.  You can try to press them back but it will only happen again.

**Q: can i get more Calibration powder?**
A: Yes, available on Amazon. I use liquid ph 7 which I think is more economical and much simpler to use.

**Q: where are the batteries?  it says included. are they installed inside?  Mine won't turn on**
A: Yes they are installed. They are most likely dead, both meters I received came with dead batteries. The thin black cap comes off if the push in the release on the back and pull it up.

**Q: Can this be used to test the pH of automotive coolant in your radiator??**
A: Yes. It’s a general liquid ph meter

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***. on 11 December 2025*

This item is necessary to maintain proper pH levels in the water. This water is utilized for feeding the plants which are highly sensitive to high pH values. I have actually recommended this item for purchase to another individual and he to agrees that this is a very good product.

### ⭐ Review
*by A***Y on 17 May 2025*

Very useless device. Does not provide a stable reading. I can’t even calibrate it because it just keeps going up and down non-stop. Fluctuates almost 2pH up and down. Highly recommend not buying this.

### ⭐⭐⭐⭐⭐ Review
*by S***S on 30 December 2025*

So I finally got one of these little digital pens to check my water and honestly it has made me feel like a total scientist in my own kitchen. I used to just stare at the tap and wonder if everything was okay but now I can just dip this in and see the numbers pop up right away 💧 It is basically like having a tiny expert living in your drawer who tells you exactly what is going on with your drinks so you dont have to guess anymore. I was actually suprised by how fast it works because I thought it would take ages to get a reading but it is usually done before I can even finish humming a little tune. It is super light and thin too which is great because it doesn't take up any space at all and I can even take it with me when I go to visit my parents 🏠 You just pop the cap off and stick it in the glass and then boom you have all the info you need right there on the screen. I accidentally left the cap off for a few hours once and I was worried I broke it but I just rinsed it off and it kept on working like a total champ. The best part is that the screen is really bright so I can even use it in the morning when I am still half asleep and havent turned all the lights on yet ☀️ I basically just point and click and it handles all the complicated math for me which is perfect since I am definitely not a fan of doing science experiments before I have had my coffee. It fits right in my pocket too so I can even use it to check the water at the gym or when I am out on a long walk in the park. If you are someone who likes to know exactly what is going on with your hydration then this is basically a little dream come true 🥤 Just make sure you keep the sensor clean or you might get some funny readings that make you tilt your head in confusion. I am honestly thinking about getting one for my friend who has a huge aquarium because it is so much easier than those messy drop kits with all the different colors. It is just a fun little tool that makes my daily life feel a lot more organized and I think you would really enjoy how simple it makes everything feel 🌟 It is basically like a magic wand for your water glass which is pretty cool if you think about it. I am very happy with it and I think it is going to stay right next to my favorite mugs for a very long time.

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-19*