--- product_id: 185477039 title: "Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution" brand: "veegee" price: "€ 0.23" currency: EUR in_stock: false reviews_count: 7 url: https://www.desertcart.pt/products/185477039-vee-gee-scientific-stx-3-handheld-refractometer-with-salinity-scale store_origin: PT region: Portugal --- # 0-100% Salinity Scale 1.0 Resolution -1.0 Accuracy Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution **Brand:** veegee **Price:** € 0.23 **Availability:** ❌ Out of Stock ## Summary > 🌟 Elevate Your Measurements with Precision and Style! ## Quick Answers - **What is this?** Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution by veegee - **How much does it cost?** € 0.23 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/185477039-vee-gee-scientific-stx-3-handheld-refractometer-with-salinity-scale) ## 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 - • **Durable Build:** Crafted with a robust metal and rubber shell for long-lasting performance. - • **Illuminated Scale:** Ambient light feature ensures visibility without needing extra power. - • **User-Friendly Design:** Lightweight and portable, perfect for on-the-go professionals. - • **Automatic Calibration:** Enjoy hassle-free readings with built-in automatic temperature compensation. - • **Precision Measurement:** Accurate salt concentration readings from 0 to 100% in PPT. ## Overview The Vee Gee Scientific STX-3 Handheld Refractometer is a cutting-edge tool designed for professionals needing accurate measurements of salt concentration and specific gravity in seawater. With a range of 0-100% salinity and automatic temperature compensation, this refractometer ensures precise readings in various conditions. Its durable design and user-friendly features make it an essential instrument for marine enthusiasts and professionals alike. ## 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: Best Refractometer Going - If your in any doubt if this is worth the money...it is, feels quality, calibration adjustment so much better than the cheap ones, the quality of the optical scale is without doubt the best I've seen, forget Itc, DD and red sea, this is the best out there. Review: Highly recommended - Actually a great piece of kit, very accurate and holds it calibration fantastically ## 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 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 1,319,482 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 124 in Refractometers | | Colour | Teal | | Customer Reviews | 4.3 4.3 out of 5 stars (99) | | Date First Available | 1 Jan. 2024 | | Item Package Quantity | 1 | | Item Weight | 286 g | | Item model number | STX-3 | | Manufacturer | Vee Gee Scientific | | Material | PE_(Polyethylene), SAN_(Styrene_Acrylonitrile_Resin) | | Part number | STX-3 | | Product Dimensions | 18.54 x 4.06 x 4.06 cm; 285.76 g | ## Images ![Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution - Image 1](https://m.media-amazon.com/images/I/813UNzLQhxL.jpg) ![Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution - Image 2](https://m.media-amazon.com/images/I/71LYRjRS8tL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Refractometer Going *by A***R on 30 December 2025* If your in any doubt if this is worth the money...it is, feels quality, calibration adjustment so much better than the cheap ones, the quality of the optical scale is without doubt the best I've seen, forget Itc, DD and red sea, this is the best out there. ### ⭐⭐⭐⭐⭐ Highly recommended *by M***N on 20 June 2021* Actually a great piece of kit, very accurate and holds it calibration fantastically ### ⭐⭐⭐⭐⭐ Review *by E***C on 29 February 2024* I have two conductivity meters by Hanna, and while they appear to be more precise, they tend to drift over time. This refactometer is great. i had previously bought one of the $20-30 versions on Amazon, and threw it out almost immediately because it wasn't even in the ballpark. This is extremely fast, and extremely accurate. It's basically replaced the Hanna digital meter for me. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/185477039-vee-gee-scientific-stx-3-handheld-refractometer-with-salinity-scale](https://www.desertcart.pt/products/185477039-vee-gee-scientific-stx-3-handheld-refractometer-with-salinity-scale) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-16*