---
product_id: 42507058
title: "Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes"
brand: "apera instruments"
price: "€ 73.39"
currency: EUR
in_stock: true
reviews_count: 11
category: "Apera Instruments"
url: https://www.desertcart.gr/products/42507058-apera-instruments-llc-ai1109-8oz-ph-calibration-buffer-solution-kit
store_origin: GR
region: Greece
---

# Color-coded for quick ID ISO 9001:2015 certified production ±0.01 pH accuracy Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes

**Brand:** apera instruments
**Price:** € 73.39
**Availability:** ✅ In Stock

## Summary

> 🔬 Calibrate Like a Pro, Measure Like a Boss!

## Quick Answers

- **What is this?** Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes by apera instruments
- **How much does it cost?** € 73.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/42507058-apera-instruments-llc-ai1109-8oz-ph-calibration-buffer-solution-kit)

## 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

- • **Long-Lasting Freshness:** Double-sealed bottles with a 2-year unopened shelf life keep your calibration reliable over time.
- • **Precision You Can Trust:** Calibrate with ±0.01 pH accuracy traceable to NIST standards for flawless measurements.
- • **Complete Calibration Kit:** Includes pH 4.00, 7.00, 10.01 buffers plus 3M KCL storage solution for comprehensive electrode care.
- • **Effortless Identification:** Color-coded buffer solutions speed up your workflow and eliminate guesswork.
- • **Certified Quality Assurance:** Manufactured in an ISO 9001:2015 & ISO 17025:2017 accredited facility ensuring premium purity and consistency.

## Overview

The Apera Instruments AI1109 pH Calibration Buffer Solution Kit offers ultra-precise pH calibration with ±0.01 accuracy at 25°C, produced under strict ISO certifications using high-purity reagents. Featuring color-coded, double-sealed bottles with a 2-year shelf life, this kit includes three essential pH buffers (4.00, 7.00, 10.01) plus a 3M KCL storage solution, making it the ultimate choice for professionals demanding reliable, traceable calibration and electrode maintenance.

## Description

Apera Instruments pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01, 8 oz. each), plus 4 oz. 3M KCL Soaking Storage Solution. Apera pH calibration buffers are produced in an ISO 9001:2015 facility with ISO 17025:2017 accreditation using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment. Reported values are accurate to +/- 0.01 pH at 25°C and are traceable to NIST Standard Reference Materials (SRMs). MSDS documents are downloadable. Certificate of analysis can be achieved by request. All pH buffers have a 2-year expiration from manufacture for an unopened bottle.

Review: Must have these if you own a pH pen - Excellent value for the money saved me from buying a brand new pH pen it calibrated my pen perfectly I'm very pleased with my purchase
Review: Excellent Calibration Solution - Excellent Calibration Solution

## Features

- Reported values are accurate to +/- 0.01 pH at 25 °C and are traceable to NIST Standard Reference Materials (SRMs).
- Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment.
- color-coded for quick identification.
- Double-sealed. 2-year expiration from manufacture for an unopened bottle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N0QVLLD |
| Best Sellers Rank | #14,873 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Chemical Buffers |
| Date First Available | December 14, 2016 |
| Item Weight | 9 ounces |
| Item model number | AI1109 |
| Manufacturer | Apera Instruments |
| Product Dimensions | 2 x 2 x 8 inches |

## Images

![Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes - Image 1](https://m.media-amazon.com/images/I/71UfGu7E6YL.jpg)

## Available Options

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

## Questions & Answers

**Q: Most of these kits are currently out of stock.  is there an eta or more stock, please?  thanks.**
A: I don’t have any information you can call apera instruments they should be able to help you with your inquiry.

**Q: Why can't i bay this calibration kit and get it delivered to silkeborg denmark, when i can bay the apera pc60 and get it delivered. it doesn't make se**
A: Perhaps this company doesn't have an export license?

**Q: Does refrigeration after opening extend life of solutions?**
A: I never had and it's been fine.

**Q: Would the buffer solutions and storage solution work with the Extech pH meter?**
A: I would think it would work with your meter providing what you are trying to buffer falls within that range. The storage solution should work with all meters. 
  I would contact Extech and confirm with them to be 100% certain.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have these if you own a pH pen
*by A***E on September 10, 2025*

Excellent value for the money saved me from buying a brand new pH pen it calibrated my pen perfectly I'm very pleased with my purchase

### ⭐⭐⭐⭐⭐ Excellent Calibration Solution
*by D***S on February 18, 2026*

Excellent Calibration Solution

### ⭐⭐⭐⭐⭐ Reasonable price for small bottles of pH standards and KCl probe storage solution.
*by L***A on February 11, 2026*

Ordered these to go with the Apera Instruments AI311 Premium Series PH60 Waterproof pH tester I orderd. They arrived in good order and match the standards included in the kit so no complaints.

## Frequently Bought Together

- Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes
- Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display
- Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-22*