---
product_id: 712551634
title: "LLC - AI1109 227g pH Calibration Buffer Solution Kit (pH 4.00, 7.00 and 10.01), plus 3M KCL Storage Solution for pH/ORP electrodes"
brand: "apera instruments"
price: "$U4857"
currency: UYU
in_stock: true
reviews_count: 5
category: "Apera Instruments"
url: https://www.desertcart.uy/products/712551634-llc-ai1109-227g-ph-calibration-buffer-solution-kit-ph-4
store_origin: UY
region: Uruguay
---

# Color-coded for quick ID ISO 9001:2015 certified production ±0.01 pH accuracy LLC - AI1109 227g pH Calibration Buffer Solution Kit (pH 4.00, 7.00 and 10.01), plus 3M KCL Storage Solution for pH/ORP electrodes

**Brand:** apera instruments
**Price:** $U4857
**Availability:** ✅ In Stock

## Summary

> 🔬 Calibrate like a pro, measure like a boss.

## Quick Answers

- **What is this?** LLC - AI1109 227g pH Calibration Buffer Solution Kit (pH 4.00, 7.00 and 10.01), plus 3M KCL Storage Solution for pH/ORP electrodes by apera instruments
- **How much does it cost?** $U4857 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/712551634-llc-ai1109-227g-ph-calibration-buffer-solution-kit-ph-4)

## 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 Shelf Life:** Double-sealed with a 2-year unopened expiration, so you’re always ready for the next project.
- • **Precision You Can Trust:** Accurate to ±0.01 pH at 25°C, ensuring lab-grade calibration every time.
- • **Complete Calibration Kit:** Includes pH 4.00, 7.00, 10.01 buffers plus 4 oz. 3M KCL soaking solution for comprehensive electrode care.
- • **Effortless Identification:** Color-coded bottles speed up your workflow—no more guesswork or mix-ups.
- • **Certified Quality Assurance:** Manufactured in an ISO 9001:2015 & ISO 17025:2017 accredited facility for unmatched reliability.

## Overview

The Apera Instruments pH Calibration Buffer Solution Kit offers ultra-precise pH calibration with ±0.01 accuracy, 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 and a 3M KCL soaking solution, making it the go-to choice for professionals demanding reliable, traceable calibration standards.

## 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: Excellent - It was accurate gave me right results
Review: Gotta have it - If you have one of Apera PH meters and you are using it because you know it's very accurate then you need to have calibration solution on hand and use it! This takes all of the guess work out of it. Pairs great with the PH60 to keep my plants living in a comfortable soup knowing they are able to get the nutrients they deserve. As a bonus you have to have the KCI liquid anyway to store the meter. The only crazy thing to me is that when you spend $100 on a pH meter that comes with the smallest bottle of storage solution practically making you have to purchase this right after spending a small fortune on the meter feels kinda predatory towards your customers. Why not include a bottle the same size as the calibration solution included there would be plenty of room in the case for it. I get it is just another source of revenue for the company. I'll still buy it because I trust it.

## Features

- The indicated values are accurate to within +/- 0.01 pH at 25°C and are traceable to the NIST (SRM) standard reference materials.
- Manufactured in an ISO 9001:2015 certified facility using high purity reagents, deionized water and certified analysis scales in a temperature controlled environment.
- Colour coded for quick identification.
- Double sealing, 2 years from the date of manufacture for unopened bottle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N0QVLLD |
| ASIN  | B01N0QVLLD |
| Batteries Required? | No |
| Customer Reviews | 4.7 4.7 out of 5 stars (204) |
| Customer reviews | 4.7 4.7 out of 5 stars (204) |
| Date First Available | 23 August 2019 |
| Date First Available  | 23 August 2019 |
| Included components | 8oz. pH Calibration Buffer Solution Kit |
| Item Package Quantity | 1 |
| Item Weight | 255 g |
| Item model number | AI1109 |
| Item model number  | AI1109 |
| Item thickness | 1 Inches |
| Manufacturer | Apera Instruments |
| Manufacturer  | Apera Instruments |
| Material | HDPE |
| Measurement System | US |
| Part number | AI1109 |
| Product Dimensions | 5.08 x 5.08 x 20.32 cm; 255.15 g |
| Product Dimensions  | 5.08 x 5.08 x 20.32 cm; 255.15 g |
| Style | pH 7/4/10 (8 oz) + KCL |

## Images

![LLC - AI1109 227g pH Calibration Buffer Solution Kit (pH 4.00, 7.00 and 10.01), plus 3M KCL Storage Solution for pH/ORP electrodes - Image 1](https://m.media-amazon.com/images/I/71UfGu7E6YL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Excellent
*by M***K on 21 October 2026*

It was accurate gave me right results

### ⭐⭐⭐⭐⭐ Gotta have it
*by J***N on 12 June 2025*

If you have one of Apera PH meters and you are using it because you know it's very accurate then you need to have calibration solution on hand and use it! This takes all of the guess work out of it. Pairs great with the PH60 to keep my plants living in a comfortable soup knowing they are able to get the nutrients they deserve. As a bonus you have to have the KCI liquid anyway to store the meter. The only crazy thing to me is that when you spend $100 on a pH meter that comes with the smallest bottle of storage solution practically making you have to purchase this right after spending a small fortune on the meter feels kinda predatory towards your customers. Why not include a bottle the same size as the calibration solution included there would be plenty of room in the case for it. I get it is just another source of revenue for the company. I'll still buy it because I trust it.

### ⭐⭐⭐⭐⭐ Great at calibrating your digital pH meter (many of them sold here on Amazon).
*by K***K on 12 October 2026*

i have multiple pH meters for my two large turtle and fish aquariums and this was great at helping me recalibrate them because they hadn't been used in a while. I am done with trying to use pH water test strips. Nothing beats a digital gauge. Easy to use and store and bottles were brand new and unopeneed. I'm able to maintain .1 accuracy of pH in my tanks now. Also never again will I use the pH powder packet kits. This is so easy!

## 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 Uruguay*
*Store origin: UY*
*Last updated: 2026-10-30*