---
product_id: 626925567
title: "AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools"
brand: "ac infinity"
price: "R6071"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Ac Infinity"
url: https://www.desertcart.co.za/products/626925567-ac-infinity-ph-meter-pro-kit-high-precision-digital-ph
store_origin: ZA
region: South Africa
---

# IP-67 waterproof & dustproof Replaceable sensor probe ±0.01 pH ultra-precision AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools

**Brand:** ac infinity
**Price:** R6071
**Availability:** ✅ In Stock

## Summary

> 💧 Precision Meets Durability — Never Miss the Perfect pH Balance!

## Quick Answers

- **What is this?** AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools by ac infinity
- **How much does it cost?** R6071 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/626925567-ac-infinity-ph-meter-pro-kit-high-precision-digital-ph)

## Best For

- ac infinity enthusiasts

## Why This Product

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

## Key Features

- • **Built to Brave the Elements:** IP-67 rating means your meter stays flawless against moisture, dust, and heat—ready for any environment.
- • **Complete Calibration Kit Included:** Stay on top of accuracy with ready-to-use pH calibration solutions (4.00, 7.00, 10.01) and KCL storage solution.
- • **Pinpoint Accuracy for Pro Results:** Achieve lab-grade ±0.01 pH precision to optimize your water quality with confidence.
- • **Versatile Water Quality Monitoring:** Perfect for hydroponics, aquariums, pools, and gardening—your all-in-one pH and temperature testing solution.
- • **Effortless Longevity with Replaceable Probe:** Swap out the sensor probe in seconds to maintain peak performance without buying a new meter.

## Overview

The AC Infinity pH Meter PRO Kit delivers lab-grade ±0.01 accuracy with a lithium glass membrane sensor and interchangeable probe. IP-67 rated for water, dust, and heat resistance, it includes calibration solutions for consistent precision. Ideal for hydroponics, aquariums, pools, and gardening, this digital pH pen ensures reliable, fast water quality readings to optimize your environment.

## Description

Product DescriptionA digital water quality meter designed to measure water’s acidity, alkalinity, and temperature to help optimize its quality for gardening and water treatment applications. The highly responsive sensor probe utilizes a lithium glass membrane to instantly determine pH readings with highly precise ±0.01 accuracy. This pH pen tester for water features an IP-67 rating, specially sealed to withstand moisture and heat, as well as block out intrusive dust and sand. For further protection, the hydroponic pH meter is built with a sensor shield to safeguard your probe in between uses. The included 4.00 pH, 7.00 pH, and 10.01 pH calibration solutions ensure consistently accurate measurements, while the 3M KCL solution supports proper storage conditions to help extend the lifespan of the pH and PPM meter.Replaceable ProbeEach pH monitor sensor probe can be effortlessly replaced to support ongoing accuracy and speed with every reading. This extends your digital meter’s lifespan while simultaneously increasing savings by eliminating the need to purchase new lab pH meters. Simply install a replacement probe and continue monitoring your water quality without interruption.ApplicationsThis fast-acting nutrient test alkalinity meter to help you determine how well your water uptakes nutrients. Fit for use as a pH meter for plants in horticultural settings like gardens, grow tents, greenhouses, and hydroponics systems. In addition, its application spans far beyond plant growing, capable of being a general pH level tester for water used in swimming pools, spas, aquarium fish tanks, and beverage homebrewing applications to help determine water safety.

Review: Fantastic piece of kit. Well worth the money
Review: Out of the box the item was well calibrated, reading 6.98 in the 7.0 test solution. I moved it to my fish aquarium and noticed the temperature was taking FOREVER (~5 minutes) to move from 70F to 80F and the pH readings would continue to move until it hit the right temperature. This was a major annoyance as that's way too long to stand there holding this pen. Given it's waterproof, I left in in a shallow part of the tank for 30 seconds while it adjusted to the temperature and when I checked it, it went to -2pH and is now stuck there. Will return due to the error. Would have likely returned due to how long it takes to register temperature regardless as my bluelab is near instant and that's what I'm used to. Everything was torqued down out of the box, but I opened afterwards and verified that water got in past the primary seal around the sensor.

## Features

- Advanced pH reader for water quality assessment designed to help monitor and maintain proper pH levels.
- Measures the acidity, alkalinity, and temperature of water for gardens, aquariums, pools, and more.
- Replaceable sensor probe with sensitive glass membrane delivers instant pH readings with pinpoint accuracy.
- IP-67 rated to be sealed from high-volume moisture, dust, and sand; can also withstand high levels of heat.
- Lab-grade test kit includes ready-to-use KCL, 4.00, 7.00 & 10.01 solutions for long-lasting precision.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CLQYLW44 |
| ASIN  | B0CLQYLW44 |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Customer Reviews | 4.4 4.4 out of 5 stars (154) |
| Customer reviews | 4.4 4.4 out of 5 stars (154) |
| Date First Available | 7 April 2024 |
| Date First Available  | 7 April 2024 |
| Included components | pH Meter, Replaceable Probe, Calibration Solutions |
| Item Package Quantity | 1 |
| Item Weight | 780 g |
| Manufacturer | AC Infinity |
| Manufacturer  | AC Infinity |
| Manufacturer reference | AC-PHM5 |
| Manufacturer reference  | AC-PHM5 |
| Package Dimensions | 25.6 x 21.5 x 5.2 cm; 780 g |
| Package Dimensions  | 25.6 x 21.5 x 5.2 cm; 780 g |
| Part number | AC-PHM5 |

## Images

![AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools - Image 1](https://m.media-amazon.com/images/I/61bjNWPQHHL.jpg)
![AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools - Image 2](https://m.media-amazon.com/images/I/61aZYxHIDGL.jpg)
![AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools - Image 3](https://m.media-amazon.com/images/I/61Z5JdWvB5L.jpg)
![AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools - Image 4](https://m.media-amazon.com/images/I/617jNQstM0L.jpg)
![AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools - Image 5](https://m.media-amazon.com/images/I/61C9XZcIkGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***M on 23 June 2025*

Fantastic piece of kit. Well worth the money

### ⭐ Review
*by J***Y on 20 January 2026*

Out of the box the item was well calibrated, reading 6.98 in the 7.0 test solution. I moved it to my fish aquarium and noticed the temperature was taking FOREVER (~5 minutes) to move from 70F to 80F and the pH readings would continue to move until it hit the right temperature. This was a major annoyance as that's way too long to stand there holding this pen. Given it's waterproof, I left in in a shallow part of the tank for 30 seconds while it adjusted to the temperature and when I checked it, it went to -2pH and is now stuck there. Will return due to the error. Would have likely returned due to how long it takes to register temperature regardless as my bluelab is near instant and that's what I'm used to. Everything was torqued down out of the box, but I opened afterwards and verified that water got in past the primary seal around the sensor.

### ⭐⭐⭐⭐⭐ Review
*by N***R on 3 December 2025*

Ich habe nichts zu beanstanden kommt in einem schönen koffer wo alles sehr aufgeräumt drinn ist die sonde kann man tauschen falls mal kaputt wirklich ein super gerät

## Frequently Bought Together

- AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools
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- General Hydroponics pH Control Kit For A Balanced Nutrient Solution

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-21*