---
product_id: 725752808
title: "8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes"
brand: "apera instruments"
price: "39.73 DT"
currency: TND
in_stock: false
reviews_count: 5
url: https://www.desertcart.tn/products/725752808-8oz-ph-calibration-buffer-solution-kit-ph-4-00-7
store_origin: TN
region: Tunisia
---

# Dual pH 4.00 & 7.00 buffers 3M KCL storage solution ±0.01 pH accuracy 8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes

**Brand:** apera instruments
**Price:** 39.73 DT
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** 8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes by apera instruments
- **How much does it cost?** 39.73 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/725752808-8oz-ph-calibration-buffer-solution-kit-ph-4-00-7)

## 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

- • **Safe & Ready to Use:** Non-hazardous formula with downloadable MSDS, perfect for professional and lab environments.
- • **Dual-Buffer Power Duo:** Includes pH 4.00 & 7.00 solutions, color-coded and double-sealed for foolproof calibration.
- • **Extended Shelf Life Confidence:** 1-year shelf life with expiration and temperature/pH reference chart keeps you ahead of the curve.
- • **Prolong Your Probe’s Lifespan:** 3M KCL storage solution maintains electrode sensitivity and accuracy for consistent results.
- • **Precision-Calibrated for Perfection:** NIST-certified accuracy within ±0.01 pH ensures your measurements are always on point.

## Overview

This 8oz pH Calibration Buffer Solution Kit features highly accurate, NIST-certified pH 4.00 and 7.00 buffers, paired with a 4oz 3M KCL storage solution to maintain electrode performance. Designed for all pH meters, it offers a 1-year shelf life, color-coded packaging, and safety compliance, making it an essential tool for precise, reliable pH measurements in professional settings.

## Description

8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes : desertcart.co.uk: Business, Industry & Science

Review: Well packaged and excellent price.
Review: Seems to be a good quality product

## Features

- High accuracy (±0.01 pH): standardized against NIST Certified pH references within 0.01 pH at 25˚c (77˚f). ideal for the calibration of all kinds of pH meters
- Color-coded, double-sealed, 1-Year shelf life
- Expiration Date and temperature/pH reference chart provided for reference
- The 3M KCL storage solution helps keep the sensitivity and accuracy of your pH probes
- Non-hazardous product (MSDS is downloadable)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MSZ4Q7Z |
| Batteries Required? | No |
| Batteries included? | No |
| Customer Reviews | 4.5 4.5 out of 5 stars (304) |
| Date First Available | 14 Dec. 2016 |
| Item Package Quantity | 1 |
| Item Weight | 255 g |
| Item model number | AI1108 |
| Manufacturer | Apera Instruments, LLC |
| Material | HDPE (High Density Polyethylene) |
| Measurement System | US |
| Part number | AI1108 |
| Product Dimensions | 5.08 x 5.08 x 20.32 cm; 255.15 g |
| Style | pH 4& 7 (8oz.) |

## Images

![8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes - Image 1](https://m.media-amazon.com/images/I/314ZnppxyLL.jpg)
![8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes - Image 2](https://m.media-amazon.com/images/I/31H6oVnl08L.jpg)
![8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes - Image 3](https://m.media-amazon.com/images/I/31HzHYR5wPL.jpg)
![8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes - Image 4](https://m.media-amazon.com/images/I/31VS9MH-2zL.jpg)
![8oz. pH Calibration Buffer Solution Kit (pH 4.00 & 7.00), plus 4oz. 3M KCL Storage Solution for pH/ORP Electrodes - Image 5](https://m.media-amazon.com/images/I/31uzZTPl1qL.jpg)

## Questions & Answers

**Q: What is the life span of the solution .  Does it have an expiration date?**
A: The lifespan of unopened pH buffer solutions (new batches) is two years, one year for the older batches. All of our solutions have expiration dates on the bottles.

**Q: Do the buffers and storage solutions have a mold inhibitor?**
A: no, I don't think it's have mold inhibitors

**Q: Does this come with storage solution?**
A: Yes a 4oz bottle of kci storage solution. It's in the pic and description.

**Q: Do the buffers and storage solutions have a mold inhibitor?**
A: I don't think so.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***N on 12 May 2025*

Well packaged and excellent price.

### ⭐⭐⭐⭐⭐ Review
*by M***W on 7 September 2025*

Seems to be a good quality product

### ⭐ Review
*by J***M on 9 October 2025*

All lids not tightened. Storage solution lid really loose; seal broken causing liquid to escape and run down the bottle, crystallizing around mouth and down sides. Noticeably lower liquid volume in bottle.

## Frequently Bought Together

- Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz
- Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes
- Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-03-24*