---
product_id: 12565651
title: "Atago 3741 Pen-Urine Specific Gravity Digital Hand-Held Urine Specific Gravity Pen Refractometer"
brand: "atago"
price: "€ 1109.34"
currency: EUR
in_stock: true
category: "Atago"
url: https://www.desertcart.sk/products/12565651-atago-3741-pen-urine-specific-gravity-digital-hand-held-urine
store_origin: SK
region: Slovakia
---

# IP65/IP67 water & dust protection Precision 0.0001 SG resolution Auto Temp Compensation (ATC) Atago 3741 Pen-Urine Specific Gravity Digital Hand-Held Urine Specific Gravity Pen Refractometer

**Brand:** atago
**Price:** € 1109.34
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your clinical precision with the Atago 3741 — where science meets sleek.

## Quick Answers

- **What is this?** Atago 3741 Pen-Urine Specific Gravity Digital Hand-Held Urine Specific Gravity Pen Refractometer by atago
- **How much does it cost?** € 1109.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/12565651-atago-3741-pen-urine-specific-gravity-digital-hand-held-urine)

## 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

- • **Light Interference Alert:** External Light Interference (ELI) warns you instantly to maintain measurement integrity.
- • **Rugged & Ready for Action:** IP65 body and IP67 prism head protect against dust and water immersion for hassle-free cleaning.
- • **Ergonomic Pen-Style Design:** Slim, lightweight form factor (16 x 3.8 x 1.8 cm) fits perfectly in your hand for effortless one-handed use.
- • **Pinpoint Accuracy in Seconds:** Ultra-fine 0.0001 resolution ensures lab-grade urine SG readings in just 2 seconds.
- • **Smart Temperature Adaptation:** Automatic Temperature Compensation guarantees flawless results regardless of environment.

## Overview

The Atago 3741 Pen Urine Digital Refractometer is a handheld, pen-shaped device designed for rapid, highly accurate urine specific gravity measurement (1.0000 to 1.0600 range). Featuring automatic temperature compensation, external light interference alerts, and robust IP65/IP67 ingress protection, it delivers reliable clinical-grade results in just 2 seconds. Its ergonomic design and digital LCD display make it an indispensable tool for healthcare professionals demanding precision and portability.

## Description

The Atago 3741 Pen Urine digital refractometer is handheld and pen-shaped, measures urine specific gravity (SG) in a 1.0000 to 1.0600 range, has an external light interference (ELI) warning, automatic temperature compensation (ATC), and Ingress Protection (IP)-65 and IP-67 ratings. A refractometer measures the refractive index of a liquid or solid in a sample, converts it to concentration in units of percent by weight, and displays the results. Refractometers are commonly used in the optical, chemical, geological, ecological, culinary, food and beverage, pharmaceutical, and educational industries, and for water-testing applications.This refractometer has a compact, ergonomic, pen-shaped body (16 x 3.8 x 1.8cm), a thin prism head for one-handed operation, and two measurement process options. A sample is measured by dipping, touching, or stirring the tip into the sample. The unit has automatic temperature compensation (ATC) for immediate, accurate calibration readings, regardless of ambient temperature, and can be calibrated with water. An external light interference (ELI) feature displays a warning message when direct light is detected. A zero key provides easy reset capability. The body has Ingress Protection (IP)-65 rating for protection against dust and low pressure water, and the prism head has IP-67 rating for protection against dust and liquid immersion, for ease of cleaning. The 3741 PEN Urine has digital, LCD display of measurement values. This device comes with a strap holder, and plastic protective carrying case that snaps closed.Specifications Measurement scale range Urine specific gravity (SG), 1.0000 to 1.0600 Measurement resolution Urine SG 0.0001 Measurement accuracy Urine SG + or - 0.0010 Sample measurement temperature 10 to 40 degrees C (ATC) Ambient temperature 10 to 40 degrees C Measurement time 2 seconds Display Digital, LCD Power supply (1) AAA alkaline battery (included) Dimensions 16 x 3.8 x 1.8 cm (H x W x D) Weight 70g H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Refractometers are used to determine substance content in a sample, to provide unit readings of substances including Brix, salinity, and alcohol; to detect chemical impurities, or to measure components of samples such as industrial fluid. Refractometers measure the refractive index of a substance, which is its optical characteristic, and the number of dissolved particles in it. The refractive index is the ratio of the speed of light in empty space to the speed of light in a substance; when light passes from one medium to another. Generally, a low concentration sample has a larger angle of refraction than a high concentration sample. For example, a straw placed in a high-concentration substance appears more bent than when placed in a low-concentration substance. Refractometers can work with natural light, or with an external power source such as batteries or electricity. They typically have either a digital or analog reading display, though some units utilize both types. Some analog-display refractometers can be used for both solids and liquids. Digital-display refractometers are used exclusively for liquids. Types of refractometers include handheld, benchtop, and in-process. Handheld refractometers are elongated and telescope-shaped, or shorter and rectangular. Analog handheld refractometer readings are obtained by looking through the monocular eyepiece and viewing where the boundary line intersects with the memory line. Digital handheld models provide a digital readout. Benchtop refractometers typically measure with a higher degree of accuracy than handheld units. In-process refractometers are used for continuous process monitoring and data readouts, and are generally fitted into a piping system for ongoing analysis. Refractometers are used in a wide variety of applications in the culinary, food and beverage, pharmaceutical, educational, geological, chemical, ecological, and automotive industries, and for water-testing applications.Atago Co., Ltd. manufactures analytical instruments such as refractometers, polarimeters, and saccharimeters, as well as a variety of meters. The company, founded in 1940 and headquartered in Tokyo, offers products that comply with Hazard Analysis and Critical Control Points (HACCP), Good Manufacturing Practices (GMP), and Good Laboratory Practices (GLP) system standards, and many International Organization for Standardization (ISO) standards.What’s in the Box?3741 PEN Urine refractometerAAA alkaline batteryPlastic storage caseInstructions

## Features

- Handheld, digital, clinical refractometer for urine specific gravity (SG) measurement in a 1.0000 to 1.0600 range
- Ergonomic, pen-shaped body (16 x 3.8 x 1.8cm), thin prism head for one-handed operation, with two measurement process options
- Automatic temperature compensation (ATC) for immediate, accurate calibration readings, regardless of ambient temperature
- External light interference (ELI) feature displays warning message when direct light is detected
- Body has Ingress Protection (IP)-65 rating for protection against dust and low pressure water, and prism head has IP-67 rating for protection against dust and liquid immersion, for ease of cleaning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004J4XDQQ |
| Batteries | 1 AAA batteries required. (included) |
| Best Sellers Rank | #576,059 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #309 in Lab Refractometers |
| Date First Available | January 28, 2011 |
| Item Weight | 7.2 ounces |
| Item model number | ATA-3741 |
| Manufacturer | Atago |
| Package Dimensions | 7.3 x 3 x 1.3 inches |

## Images

![Atago 3741 Pen-Urine Specific Gravity Digital Hand-Held Urine Specific Gravity Pen Refractometer - Image 1](https://m.media-amazon.com/images/I/51Duubmir6L.jpg)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-09*