---
product_id: 144561853
title: "Hach Singlet™ Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20), 2770020"
brand: "hach"
price: "33.26 OMR"
currency: OMR
in_stock: true
category: "Hach"
url: https://www.desertcart.com.om/products/144561853-hach-singlet-single-use-ph-buffer-ph-4-01-nist
store_origin: OM
region: Oman
---

# Precise pH 4.01 calibration Pack of 20 single-use buffers NIST-traceable standard Hach Singlet™ Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20), 2770020

**Brand:** hach
**Price:** 33.26 OMR
**Availability:** ✅ In Stock

## Summary

> 🧪 Calibrate with confidence—because precision never goes out of style!

## Quick Answers

- **What is this?** Hach Singlet™ Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20), 2770020 by hach
- **How much does it cost?** 33.26 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/144561853-hach-singlet-single-use-ph-buffer-ph-4-01-nist)

## Best For

- hach enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Convenience:** Pack of 20 buffers keeps your workflow uninterrupted and efficient.
- • **Ready When You Are:** Single-use packets eliminate contamination and simplify on-site testing.
- • **Freshness Guaranteed:** Individually sealed for maximum reliability and shelf life.
- • **Precision You Can Trust:** NIST-certified pH 4.01 ensures lab-grade accuracy every time.
- • **Effortless On-Site Analysis:** Lightweight and portable, perfect for field professionals on the move.

## Overview

The Hach Singlet™ Single-Use pH Buffer at pH 4.01 is a NIST-traceable, individually sealed buffer solution designed for precise, contamination-free calibration. Packaged in convenient sets of 20, it’s ideal for professionals requiring reliable, on-site pH testing with minimal hassle.

## Description

Hach 2770020 SINGLET Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20)

## Features

- Ideal for on-site analyses
- Easy to Use
- Fresh and reliable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00N40AGHU |
| Best Sellers Rank | #361,678 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #184 in Chemical Buffers |
| Date First Available | August 28, 2014 |
| Item Weight | 0.16 ounces |
| Item model number | 2770020 |
| Manufacturer | Hach |
| National Stock Number | 6630-01-561-2939 |

## Product Details

- **Brand:** HACH
- **Manufacturer:** Hach
- **Ph Range:** 4.01
- **Recommended Uses For Product:** pH Test
- **Unit Count:** 1 Count

## Images

![Hach Singlet™ Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20), 2770020 - Image 1](https://m.media-amazon.com/images/I/51VUT+-7tXL.jpg)
![Hach Singlet™ Single-Use pH Buffer, pH 4.01, (NIST), (Pack of 20), 2770020 - Image 2](https://m.media-amazon.com/images/I/51kw1xF9d+L.jpg)

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---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-21*