---
product_id: 40679482
title: "VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified"
brand: "vivosun"
price: "HK$176"
currency: HKD
in_stock: true
reviews_count: 12
category: "Vivosun"
url: https://www.desertcart.hk/products/40679482-vivosun-digital-ph-meter-0-01ph-high-accuracy-pen-type
store_origin: HK
region: Hong Kong
---

# 0.01 pH precision Built-in + extra batteries Automatic Temperature Compensation VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified

**Brand:** vivosun
**Price:** HK$176
**Availability:** ✅ In Stock

## Summary

> 🌊 Stay ahead of the curve with precision pH insights that keep your water world thriving!

## Quick Answers

- **What is this?** VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified by vivosun
- **How much does it cost?** HK$176 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/40679482-vivosun-digital-ph-meter-0-01ph-high-accuracy-pen-type)

## Best For

- vivosun enthusiasts

## Why This Product

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

## Key Features

- • **Ready Out of the Box:** Pre-calibrated with included buffer powders and extra batteries—no downtime, just instant testing.
- • **Compact & User-Friendly:** Pocket-sized, lightweight design with a clear backlit LCD screen for effortless readings anytime, anywhere.
- • **Smart Temperature Adaptation:** ATC tech instantly adjusts readings to water temperature for flawless precision every time.
- • **Pinpoint Accuracy for Pro Results:** Ultra-fine 0.01 pH resolution ensures your hydroponics and aquariums thrive with perfect balance.
- • **Versatile Water Testing Powerhouse:** Perfect for pools, spas, drinking water, labs, and aquaculture—your all-in-one pH monitoring solution.

## Overview

The VIVOSUN Digital pH Meter delivers lab-grade 0.01 pH accuracy with automatic temperature compensation, making it ideal for hydroponics, aquariums, pools, and household water testing. UL certified and ready to use with pre-installed batteries and calibration powders, this compact pen-type tester offers fast, reliable readings on a clear backlit display, empowering professionals and enthusiasts to maintain optimal water quality effortlessly.

## Description

VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified: desertcart.com: Industrial & Scientific

Review: Appear to work well - After reading several reviews on this and other similar models I decided on this two pack PH and TDS. I recently installed a reverse osmosis under kitchen sink with a tds digital display and wanted another way to check its accuracy along with what ph the RO water was putting out. Item arrived quickly and after reading instructions I decided to give it a test. Batteries were already installed and additional batteries were included so that and they both were already calibrated so two pluses from the start. I filled a glass with reverse osmosis water and another from bathroom sink. Tds for bathroom were 107 compared to RO water of 9. This is the same reading my RO system shows so I assume its pretty accurate. Next I tested the PH. Ro water was higher than bath sink water but this units numbers jumped around a bit. Although the numbers did not display steadily i was able to get a good reading and am pleased with the results. For the price I find the two units a great bargain and much better than the water test strips I was using. After my initial tests I highly recommend these products as they appear to be accurate and easy to read.
Review: Inexpensive, but good PH meter. - This is the second of these PH meters I've purchased. There are a number of negative reviews, so I was a little concerned but went ahead and order one. The first meter calibrated easily and (apparently) accurately. I used the three point calibration, then tested my fish tanks and compared the reading to the drop type ph test kit I had been using. It was spot on as close as I could tell with the test kit. I used the meter for a week, every day on several tanks as I changed the ph. It tracked these changes as I would have expected it to. It worked very well for me so I ordered a second PH meter. (I have fish tanks in two locations.) I then used these two meters side by side. They vary from each other by 0.10 points. The second meter did not calibrate as easily as the first, and the calibration was off slightly. I will try recalibrating, but it's as accurate as I need now. I'm very satisficed with them and would recommend.

## Features

- Application: Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics
- Easy Calibration: Advanced technology makes the test result fast and accurate; LCD screen makes reading clearly
- Features: Pocket size, lightweight, backlit function, high quality
- ATC Function: With Automatic Temperature Compensation (ATC), adjust to water temperature and give pH reading almost instantly
- What You Get: pH meter, user manual, 2 x 1.5V button cells (built in), 3 x pH buffer powders

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01M5IASHD |
| Best Sellers Rank | #480 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab pH Meters |
| Date First Available | October 31, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.87 ounces |
| Item model number | 4316344538 |
| Manufacturer | VIVOSUN |
| Package Dimensions | 6.61 x 2.13 x 1.26 inches |

## Product Details

- **Brand:** VIVOSUN
- **Manufacturer:** VIVOSUN
- **Ph Range:** 0.00-14.00
- **UPC:** 714119465581
- **Unit Count:** 1.0 Count

## Images

![VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, Yellow, UL Certified - Image 1](https://m.media-amazon.com/images/I/51oVdDBZlWL.jpg)

## Questions & Answers

**Q: What do you use to clean electrode?**
A: Instructions say to use distilled water to clean electrodes

**Q: Would this be a good tool for an aquarium?**
A: Sure it will read the Ph for your tank

**Q: Does it work well for testing ph in a saltwater pool?**
A: I don’t know anything about testing pool water but it will definitely give you the ph between 4.0-10

**Q: My pen has gone way out of calibration. Is there a way to calibrate it against an accurate test kit? I.e. just set the pH?**
A: I second the answer but Alix. I thought it could be recalibrated against the standards they provide and I would be back to using the ph tool. Once it started to give me bogus readings I knew I had a new paper weight. I even bought 7.0 fluid so I could check it before each use so I knew the readings were correct. I have extensive experience calibrating thousands of gauges in a railroad machine shop to NIST and audited by the ARR annually. Knowing I have a good accurate tool is important to me. The quality of this tool is below the mark. I am surprised as I own VIVOSUN products that are more reliable so I thought I would give it a chance. It lasted almost a year for me.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Appear to work well
*by J***K on January 9, 2026*

After reading several reviews on this and other similar models I decided on this two pack PH and TDS. I recently installed a reverse osmosis under kitchen sink with a tds digital display and wanted another way to check its accuracy along with what ph the RO water was putting out. Item arrived quickly and after reading instructions I decided to give it a test. Batteries were already installed and additional batteries were included so that and they both were already calibrated so two pluses from the start. I filled a glass with reverse osmosis water and another from bathroom sink. Tds for bathroom were 107 compared to RO water of 9. This is the same reading my RO system shows so I assume its pretty accurate. Next I tested the PH. Ro water was higher than bath sink water but this units numbers jumped around a bit. Although the numbers did not display steadily i was able to get a good reading and am pleased with the results. For the price I find the two units a great bargain and much better than the water test strips I was using. After my initial tests I highly recommend these products as they appear to be accurate and easy to read.

### ⭐⭐⭐⭐⭐ Inexpensive, but good PH meter.
*by L***K on April 12, 2024*

This is the second of these PH meters I've purchased. There are a number of negative reviews, so I was a little concerned but went ahead and order one. The first meter calibrated easily and (apparently) accurately. I used the three point calibration, then tested my fish tanks and compared the reading to the drop type ph test kit I had been using. It was spot on as close as I could tell with the test kit. I used the meter for a week, every day on several tanks as I changed the ph. It tracked these changes as I would have expected it to. It worked very well for me so I ordered a second PH meter. (I have fish tanks in two locations.) I then used these two meters side by side. They vary from each other by 0.10 points. The second meter did not calibrate as easily as the first, and the calibration was off slightly. I will try recalibrating, but it's as accurate as I need now. I'm very satisficed with them and would recommend.

### ⭐⭐⭐⭐ Good Value, but the pH Meter Is Slow
*by D***S on October 25, 2025*

The TDS meter works very well, especially considering the low price — it gives quick and reliable readings. However, the pH meter takes a bit longer to stabilize and provide an accurate measurement. Overall, it’s a useful and affordable kit for basic water quality testing, but be patient with the pH readings.

## Frequently Bought Together

- VIVOSUN Digital pH Meter, 0.01pH High Accuracy Pen Type pH Tester for Hydroponics, Household Drinking, Pool and Aquarium, UL Certified
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution
- VIVOSUN 18-Pack pH Meter Buffer Solution Powder, pH 6.86/4.00/9.18, pH Buffer Powder for Precise and Easy pH Tester Calibration

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-24*