---
product_id: 768058028
title: "HI7004/1L pH 4.01 Calibration Solution (1 L)"
brand: "hanna instruments"
price: "A$61"
currency: AUD
in_stock: true
category: "Hanna Instruments"
url: https://www.desertcart.com.au/products/768058028-hi7004-1l-ph-4-01-calibration-solution-1-l
store_origin: AU
region: Australia
---

# 5-year shelf life unopened ±0.01 pH accuracy ISO 3696/BS3978 certified purity HI7004/1L pH 4.01 Calibration Solution (1 L)

**Brand:** hanna instruments
**Price:** A$61
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** HI7004/1L pH 4.01 Calibration Solution (1 L) by hanna instruments
- **How much does it cost?** A$61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/768058028-hi7004-1l-ph-4-01-calibration-solution-1-l)

## Best For

- hanna instruments enthusiasts

## Why This Product

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

## Key Features

- • **Long-Term Ready:** A 5-year unopened shelf life means your calibration solution is always ready when you are—no last-minute runs.
- • **Lab-Grade Purity:** Formulated with high-purity salts and deionized water under strict ISO standards for uncompromising reliability.
- • **Precision You Can Trust:** NIST-traceable pH 4.01 calibration with ±0.01 accuracy at 25°C ensures your measurements never miss the mark.
- • **Smart & Secure Packaging:** Tamper-proof, airtight seal plus clear lot and expiration labeling guarantees freshness and traceability.
- • **Temperature-Savvy Calibration:** Integrated temperature chart on the bottle lets you adjust pH values precisely across varying lab conditions.

## Overview

The Hanna Instruments HI7004/1L pH 4.01 Calibration Solution is a premium, NIST-traceable buffer designed for precise pH meter calibration. Manufactured to ISO 3696/BS3978 standards with high-purity ingredients, it offers ±0.01 pH accuracy at 25°C, a 5-year unopened shelf life, and a tamper-proof seal. Its red dye and temperature chart enhance usability in laboratory and industrial settings, ensuring reliable, traceable calibration every time.

## Description

Ensure precise pH calibration with the Hanna Instruments HI7004/1L pH 4.01 Calibration Solution. This premium-quality buffer is formulated in compliance with ISO 3696/BS3978 standards, using high-purity salts, deionized water, and certified Class A glassware. Designed for laboratory and industrial applications, this NIST-traceable solution provides an accuracy of ±0.01 pH @ 25°C and features a temperature chart for reference at different temperatures. The red-dyed solution allows for easy buffer identification, while the airtight, tamper-proof seal ensures long-term reliability with a 5-year shelf life for unopened bottles. Key Features: ✔ High Accuracy & NIST Traceable – pH 4.01 buffer solution with ±0.01 pH accuracy @ 25°C, ensuring reliable calibration results. ✔ Premium Quality Standards – Manufactured in accordance with ISO 3696/BS3978 using high-purity salts and deionized water. ✔ Long Shelf Life – Specially formulated with a 5-year expiration date for unopened bottles, ensuring long-term usability. ✔ Tamper-Proof & Airtight Seal – Ensures freshness and quality of the buffer solution. ✔ Temperature Chart on Bottle – Provides actual pH values at various temperatures for precise calibration. ✔ Red-Dyed for Easy Identification – Quickly recognize the buffer solution in your calibration routine. ✔ Lot Number & Expiration Date on Label – Guarantees product traceability and quality assurance.

## Features

- Laboratory use
- Industrial calibration applications
- pH meters and electrodes calibration
- Research and scientific testing
- HI7004/1L pH 4.01 Calibration Solution

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00RYPG6XE |
| Item model number | HI7004/1L |
| Manufacturer | Hanna Instruments |
| Package Dimensions | 19.81 x 7.19 x 7.11 cm; 590 g |

## Images

![HI7004/1L pH 4.01 Calibration Solution (1 L) - 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

## 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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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-06-22*