---
product_id: 13710562
title: "Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle"
price: "€ 81.97"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.be/products/13710562-hanna-instruments-hi7004l-4-01-ph-calibration-buffer-solution-500ml
store_origin: BE
region: Belgium
---

# Long shelf-life stability 500mL lab-grade solution Precise 4.01 pH calibration Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle

**Price:** € 81.97
**Availability:** ✅ In Stock

## Summary

> 🧪 Calibrate like a pro — precision you can trust, every time!

## Quick Answers

- **What is this?** Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle
- **How much does it cost?** € 81.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/13710562-hanna-instruments-hi7004l-4-01-ph-calibration-buffer-solution-500ml)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Reliable Stability:** Formulated for long shelf-life, ensuring consistent performance every time.
- • **Lab-Grade Precision:** Calibrate your pH meter with industry-trusted 4.01 buffer for flawless accuracy.
- • **Generous 500mL Volume:** Ample solution to keep your equipment perfectly tuned over multiple uses.
- • **Effortless Calibration:** Simplify your workflow with a ready-to-use solution that guarantees quick, reliable results.
- • **Trusted by Professionals:** Used and recommended by experts for years—join the community of precision-driven users.

## Overview

The Hanna Instruments HI7004L is a 500mL 4.01 pH calibration buffer solution designed to deliver precise and reliable calibration for pH meters. Trusted by professionals and backed by consistent positive reviews, it ensures accurate measurements and long-lasting stability for your lab or field equipment.

## Description

Hanna Instruments

Review: Should get if you need to calibrate ph machine reader - Helps calibrate the PH level because the machine I ordered wasn’t working after using this it was good, and price worthy
Review: Great product - I have used Hanna calibration buffer solutions for years with no problems.

## Features

- Calibration Buffer Solution

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.7 out of 5 stars 68 Reviews |

## Images

![Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle - Image 1](https://m.media-amazon.com/images/I/81SkaEo9SpL.jpg)

## Questions & Answers

**Q: Is it normal for the ph of the buffer to change over time? My teika ph meter read 4.01 one day, 4.17 the next, and 4.27 the next.**
A: I have the same problem and have not figured it out yet, even with a new meter. Sorry I couldn't be more help

## Customer Reviews

### ⭐⭐⭐⭐⭐ Should get if you need to calibrate ph machine reader
*by S***L on June 23, 2025*

Helps calibrate the PH level because the machine I ordered wasn’t working after using this it was good, and price worthy

### ⭐⭐⭐⭐⭐ Great product
*by R***S on March 27, 2020*

I have used Hanna calibration buffer solutions for years with no problems.

### ⭐⭐⭐⭐⭐ good ole' reliable
*by J***N on December 2, 2016*

Works well it's reliable has a long shelf life. I've been using Hanna calibration solutions for years now and I have nothing but good to say and report about it

## Frequently Bought Together

- Hanna Instruments HI7004L 4.01 pH Calibration Buffer Solution, 500mL Bottle
- WLR Industries Hanna HI7007L pH 7 Buffer Solution - pH 7.01
- Hanna Instruments HI70300L pH/ORP Electrode Storage Solution, 500mL (16.9oz) Bottle

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**Shop now:** [https://www.desertcart.be/products/13710562-hanna-instruments-hi7004l-4-01-ph-calibration-buffer-solution-500ml](https://www.desertcart.be/products/13710562-hanna-instruments-hi7004l-4-01-ph-calibration-buffer-solution-500ml)

---

*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-07-24*