---
product_id: 30471114
title: "4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer (°C Scale)"
brand: "atago"
price: "€ 690.86"
currency: EUR
in_stock: true
category: "Atago"
url: https://www.desertcart.gr/products/30471114-4491-pal-91s-digital-pocket-ethylene-glycol-refractometer-c-scale
store_origin: GR
region: Greece
---

# 0.2% glycol resolution AAA battery powered 3-digit LCD display 4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer (°C Scale)

**Brand:** atago
**Price:** € 690.86
**Availability:** ✅ In Stock

## Summary

> 📊 Coolant quality, measured with precision and speed—never miss a beat!

## Quick Answers

- **What is this?** 4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer (°C Scale) by atago
- **How much does it cost?** € 690.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/30471114-4491-pal-91s-digital-pocket-ethylene-glycol-refractometer-c-scale)

## Best For

- atago enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Lightweight pocket design powered by common AAA batteries—measure anywhere, anytime.
- • **Effortless Calibration:** One-touch zeroing with water keeps your device always ready.
- • **Instant Readings, Zero Wait:** Get results in just 3 seconds with a crisp digital display.
- • **Precision at Your Fingertips:** Ultra-accurate 0.4% glycol measurement ensures flawless coolant monitoring.
- • **Smart Temperature Compensation:** Automatic adjustment guarantees reliable data regardless of sample temp.

## Overview

The Atago 4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer delivers fast, precise measurements of glycol concentration and freezing point with 0.2% resolution and ±1°C temperature accuracy. Featuring a clear 3-digit LCD, automatic temperature compensation, and simple calibration, this compact, battery-powered tool is essential for professionals managing industrial fluids and coolants.

## Description

Use these digital refractometers to easily monitor the quality of your water-soluble industrial fluids and coolants. Operation is easy - place a few drops of sample on the prism, press the start key, and the measurement is displayed in three seconds. Display the freezing point by pressing the start key for two seconds while the concentration ( percent ) is indicated. Calibration is also simple - clean off the prism, add water and press the zero key. Digital display ensures accurate readings units are ideal for measuring coolant levels in antifreeze and deicing solutions. Automatic temperature compensation makes sample measurements quick and easy.

## Features

- Accuracy: 0.4 percent (glycol)
- Battery type: aaa battery (2)
- Display type: 3-digit lcd
- Resolution: 0.2 percent (glycol)
- Temperature accuracy: 1°c

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NG2DW4U |
| Best Sellers Rank | #2,152,602 in Automotive ( See Top 100 in Automotive ) #243 in Cooling System Additives |
| Date First Available | May 25, 2010 |
| Item Weight | 7.7 ounces |
| Item model number | 4491(PAL-91S) |
| Manufacturer | Cole-Parmer |
| Package Dimensions | 6.02 x 3.94 x 2.68 inches |

## Images

![4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer (°C Scale) - Image 1](https://m.media-amazon.com/images/I/41izCZE-R6L.jpg)

## Frequently Bought Together

- Atago 4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer (°C Scale)
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**Shop now:** [https://www.desertcart.gr/products/30471114-4491-pal-91s-digital-pocket-ethylene-glycol-refractometer-c-scale](https://www.desertcart.gr/products/30471114-4491-pal-91s-digital-pocket-ethylene-glycol-refractometer-c-scale)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-09-04*