---
product_id: 514754305
title: "AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II"
brand: "apera instruments"
price: "Bs.2456"
currency: BOB
in_stock: true
reviews_count: 9
url: https://www.desertcart.bo/products/514754305-ai101g-grostar-series-gs1-ph-pen-tester-kit-with-replaceable
store_origin: BO
region: Bolivia
---

# Hydroponics ready Lab-grade accuracy Replaceable probe AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II

**Brand:** apera instruments
**Price:** Bs.2456
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate Your Grow Game with Precision Testing!

## Quick Answers

- **What is this?** AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II by apera instruments
- **How much does it cost?** Bs.2456 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/514754305-ai101g-grostar-series-gs1-ph-pen-tester-kit-with-replaceable)

## Best For

- apera instruments enthusiasts

## Why This Product

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

## Key Features

- • **Quick Calibration:** Finish 2-point calibration in under a minute with an intuitive HD backlit screen.
- • **Cost-Effective Design:** Replaceable double-junction pH probe saves you money while ensuring longevity.
- • **Smart Maintenance Alerts:** Stay on top of your testing game with a probe condition indicator and calibration reminders.
- • **User-Friendly Experience:** Designed with growers in mind, making water quality testing effortless and efficient.
- • **Precision Meets Convenience:** Experience lab-grade pH and temperature measurements tailored for growers.

## Overview

The Apera Instruments AI101G GroStar Series GS1 pH Pen Tester Kit is a lab-grade pH meter specifically designed for hydroponics. It features a premium double-junction pH probe for high accuracy and durability, an easy-to-use calibration workflow, and smart maintenance indicators, making it the perfect tool for growers looking to optimize their water quality testing.

## Description

Apera Instruments AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen IICarbonfree CertifiedClimeCo Certified

## Features

- Lab-grade pH meter designed specifically to meet growers' needs and habits
- Measures pH and temperature with premium probe technologies, ensuring high accuracy and durability with minimal maintenance
- Grower-friendly calibration workflow on an HD backlit screen allows you to finish 2-point calibration within a minute
- Replaceable double-junction pH probe helps you save money in the long run
- pH probe condition indicator and calibration reminder function help you perform proper maintenance in a breeze

## Images

![AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II - Image 1](https://m.media-amazon.com/images/I/61uBT-Qhu7L.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Intuitive and Accurate
  

*by S***S on Reviewed in the United States on October 15, 2024*

This all-in-one tool was exactly the thing I needed to ensure my hydroponic gardens were thriving and productive. The device is easy to use and to maintain, and it comes with clear instructions, helpful videos, and safeties to make sure you don’t smash it on your first use. It’s durable. Thanks. It also comes with batteries installed, which was a surprising little perk. I appreciate that when the time comes to have to replace parts that this device is well-considered for the ease of reuse and the economy of parts that will need to be disposed of later. Works well, long-lasting value, intuitive, easy to keep. It’s ideal. I recommend it.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Excellent meter
  

*by C***R on Reviewed in the United States on September 26, 2024*

Excellent meter, easy to use, back light makes readings easy to see.  Readings are accurate, tested against other meters I had.  Calibration is a very easy and simple process. I hope to use this for years to come, unlike other meters I have purchased.  The parts are replaceable.  Thank you!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Incredibly accurate, precise, easy to calibrate, and easy to use - JRTFM!
  

*by E***S on Reviewed in the United States on August 4, 2024*

Perfectly calibrated out of the box. The pH meter is incredibly accurate and agrees with pH paper test strips! I had purchased another Apera meter (Apera Instruments AI311 PH60) thinking that I could use one of those cheap meters for EC but it was inaccurate and junk, wouldn't auto shut off and was a total waste of money and time. I had already wasted time and money on the cheap pH meters that were awful to calibrate, used expensive small button batteries, did not shut off automatically so it was 1 reading and new batteries if you don't shut them off. By mistake, I purchase 2 identical cheap pH meters and they won't even agree with each other for pH or EC and they don't agree with either of the Apera meters (both of the Apera meters agree perfectly on pH) or pH paper test strips. I don't have any thing to compare the EC meter with but from my experience with the pH portion, I would expect it is extremely precise and accurate.Would be nice if the GS4 came in a similar case to the PH60 instead of a cheap cardboard box that won't last.

## Frequently Bought Together

- Apera Instruments AI101G GroStar Series GS1 pH Pen Tester Kit with Replaceable Double-Junction pH Probe for Hydroponics Water Quality Testing, Gen II
- Apera Instruments AI1114 pH Calibration Solution Kit (7.00, 4.00), 16 oz. for Each, Plus Apera CalPod Solution Holder, NIST traceable
- Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes

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**Shop now:** [https://www.desertcart.bo/products/514754305-ai101g-grostar-series-gs1-ph-pen-tester-kit-with-replaceable](https://www.desertcart.bo/products/514754305-ai101g-grostar-series-gs1-ph-pen-tester-kit-with-replaceable)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-03-15*