---
product_id: 5421241
title: "Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty"
brand: "veegee"
price: "1326 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Vee Gee"
url: https://www.desertcart.pl/products/5421241-vee-gee-scientific-stx-3-handheld-salinity-refractometer-with-atc
store_origin: PL
region: Poland
---

# 0-100% salinity range Automatic Temperature Compensation (ATC) Durable metal & rubber grip Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty

**Brand:** veegee
**Price:** 1326 zł
**Availability:** ✅ In Stock

## Summary

> 🌊 Master salinity like a pro—precision meets durability in your palm.

## Quick Answers

- **What is this?** Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty by veegee
- **How much does it cost?** 1326 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/5421241-vee-gee-scientific-stx-3-handheld-salinity-refractometer-with-atc)

## Best For

- veegee enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Industrial-grade copper alloy body with rubber coating and non-roll stand for rugged, on-the-go use.
- • **Power-Free Clarity:** Ambient light illumination means no batteries needed—readings are bright, clear, and eco-friendly.
- • **Ready When You Are:** Comes factory-calibrated with tool-free adjustment, plus a sleek carrying case and pipet for seamless fieldwork.
- • **Precision in Every Drop:** Measures salinity from 0 to 100% and specific gravity with ±1.0% accuracy—trust your data, always.
- • **Smart Temperature Adaptation:** Automatic Temperature Compensation ensures instant, reliable readings regardless of ambient conditions.

## Overview

The Vee Gee Scientific STX-3 is a handheld, industrial-grade salinity refractometer offering a broad 0-100% salinity and 1.000-1.070 specific gravity measurement range. Featuring automatic temperature compensation (ATC) for instant accuracy, a durable metal and rubber body for rugged use, and ambient light illumination for power-free operation, it’s designed for professionals demanding reliable, precise readings in diverse environments. Factory-calibrated and backed by a 5-year warranty, it’s the trusted choice for scientific, industrial, and aquatic applications.

## Description

The VEE GEE STX-3 is a handheld, portable, water-resistant salinity refractometer that measures salt concentration in parts per thousand (PPT) in the 0 to 100% range and specific gravity (SG) of seawater in the 1.000 to 1.070 range, has automatic temperature compensation (ATC), and a durable metal body with rubber grip. A salinity refractometer measures the concentration of salt, such as sodium chloride, magnesium and calcium sulfates, in liquids and displays the results. Handheld refractometers, also known as sugar meters, concentration meters, or Brix meters, are commonly used in the culinary, food and beverage, pharmaceutical, educational, geological, chemical, and ecological industries, and for water-testing applications. This refractometer is housed in a durable metal body. The VEE GEE STX-3 features ATC for immediate, accurate readings, with an ambient temperature of 10 to 30 degrees C. The unit is factory-calibrated and can be calibrated with distilled water. Calibration can be controlled and adjusted with a tool-free calibration ring and a set screw. The outer shell is rubber coated with dimpled grip for easy gripping and the rubber coating guards against hand heat for accurate measurements. A non-roll stand prevents the unit from rolling when placed on a flat surface such as a table or bench top. The optical glass prism is mounted in an all-metal housing composed of copper alloy with a nickel-chrome coating for quick temperature equilibrium between the sample and the prism. The analog Brix scale features a bright, high-contrast display for clear visibility of the boundary and memory lines intersection. Instantaneous sample readings illuminated by ambient light are viewed through a monocular, focusable, cushioned eyepiece. The unit comes with a zippered vinyl carrying case, a plastic transfer pipet and an instruction manual. Specifications Measurement scale range Salinity (PPT) 0 to 100%, Seawater (SG) 1.000 to 1.070 Specimen measurement temperature range 10 to 30 degrees C Accuracy Salinity + or – 1.0%, Seawater (SG) + or – 0.001, Temperature + or - 1 degrees C Resolution Salinity 1.0%, Seawater (SG) 0.001, Temperature 1 degrees C Ambient temperature for unit operation 10 to 30 degrees C Sample volume > 0.1ml Measurement time Instantaneous Body type Copper alloy with a nickel-chrome coating Illumination Ambient light; unit requires no additional power source Dimensions 40 x 40 x 185mm (H x W x D) Weight 285g One year 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. VEE GEE Scientific manufactures laboratory equipment and supplies, and makes the VanGuard brand of products. The company, founded in 1981 and headquartered in Kirkland, WA, offers scientific equipment for educational, research, clinical, and industrial applications.What’s in the Box?STX-3 refractometerVinyl carrying casePlastic transfer pipetInstructions

Review: Great Refractometer - I am a Salt Water Aquarium Hobbyist and a refractometer needs to be your best friend. I originally ordered a cheeper one that would never keep a calibration. This unit is amazing. It came calibrated perfectly. It’s heavy and you can tell it’s made well. The numbers are easy to read and are in large print. It comes with a little bag a screwdriver and a pipet for testing. Easy to use if you know what you’re looking at. Highly recommend even though it’s expensive. As they say buy once cry once.
Review: Best Refractometer on the Market! - Have been using this refractometer for almost 2 years now. Extremely accurate and holds calibration. I have 3 ways to measure salinity but this is the one I trust most. I do periodic ICP tests and the results line up with the salinity reported by the VeeGee refractometer. This is worth every penny!

## Features

- Handheld portable refractometer for measurement of salt concentration in parts per thousand (PPT) (0 to 100%) and specific gravity (SG) (1.000 to 1.070) of seawater in the 10 to 30 degrees C temperature range
- Automatic temperature compensation (ATC) for immediate and accurate calibration readings, regardless of ambient temperature
- Ambient light illuminates the scale; no additional power source is required
- Durable metal and rubber outer shell with a telescope-shaped, streamlined design (40 x 40 x 185mm), a rubber grip to guard against hand heat for accurate measurements, and a non-roll stand to protect against damage
- Optical glass prism mounted in all-metal housing for quick temperature equilibrium between sample and prism

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004WDW70M |
| Best Sellers Rank | #275,969 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #138 in Lab Refractometers |
| Date First Available | April 5, 2011 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10.1 ounces |
| Item model number | STX-3 |
| Manufacturer | Vee Gee Scientific |
| Product Dimensions | 7.3 x 1.6 x 1.6 inches |

## Images

![Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty - Image 1](https://m.media-amazon.com/images/I/813UNzLQhxL.jpg)
![Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty - Image 2](https://m.media-amazon.com/images/I/71LYRjRS8tL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Refractometer
*by J***. on May 19, 2025*

I am a Salt Water Aquarium Hobbyist and a refractometer needs to be your best friend. I originally ordered a cheeper one that would never keep a calibration. This unit is amazing. It came calibrated perfectly. It’s heavy and you can tell it’s made well. The numbers are easy to read and are in large print. It comes with a little bag a screwdriver and a pipet for testing. Easy to use if you know what you’re looking at. Highly recommend even though it’s expensive. As they say buy once cry once.

### ⭐⭐⭐⭐⭐ Best Refractometer on the Market!
*by N***N on September 27, 2025*

Have been using this refractometer for almost 2 years now. Extremely accurate and holds calibration. I have 3 ways to measure salinity but this is the one I trust most. I do periodic ICP tests and the results line up with the salinity reported by the VeeGee refractometer. This is worth every penny!

### ⭐⭐⭐⭐⭐ Lab-grade consistant accuracy!!!
*by P***S on June 27, 2020*

My 10+ year old refractometer started giving consitantly erratic readings. It was time to replace it, and I chose this one based on reviews. I was not disappointed. I can feel the quality, just by picking it up. It doesn't feel "hollow". I can see the performance in rock-solid, consistant readings. I did have to calibrate it, though. According to my new bottle of calibration fluid, it was off by .0001. I haven't had to adjust it since then. A bit pricey, but like anything marine-wise... you get what you pay for. Highly recommended!!!

## Frequently Bought Together

- Vee Gee Scientific STX-3 Handheld Salinity Refractometer with ATC, Industrial-Grade, 0-100% Salinity Range, 1.000-1.070 Specific Gravity Range, 5-Year Warranty
- Pinpoint® Salinity Fluid for Refractometers and Salinity Monitors
- Continuum Reagents Refractometer Calibration Standard – Seawater Reference for Calibration of Density Measuring Equipment, 60 ml

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-16*