--- product_id: 59530919 title: "Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for the Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60" brand: "brightwell aquatics" price: "€ 25.09" currency: EUR in_stock: true category: "Brightwell Aquatics" url: https://www.desertcart.hr/products/59530919-brightwell-aquatics-refractometer-calibration-standard-accurate-reference-for-the-calibration store_origin: HR region: Croatia --- # Reliable 1.0264 Specific Gravity Exact 1.3394 Refractive Index Precise 35 ppt Salinity Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for the Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60 **Brand:** brightwell aquatics **Price:** € 25.09 **Availability:** ✅ In Stock ## Summary > ⚙️ Calibrate like a pro, measure like a boss! ## Quick Answers - **What is this?** Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for the Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60 by brightwell aquatics - **How much does it cost?** € 25.09 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/59530919-brightwell-aquatics-refractometer-calibration-standard-accurate-reference-for-the-calibration) ## Best For - brightwell aquatics enthusiasts ## Why This Product - Trusted brightwell aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Proven Reliability:** Backed by 391+ reviews and a 4.4-star rating, join the community of professionals who trust RES60 for flawless calibration. - • **Universal Compatibility:** Works seamlessly with a wide range of density measuring equipment, from refractometers to hydrometers. - • **Calibrate with Confidence:** Industry-grade 35 ppt salinity ensures your seawater refractometers and hydrometers deliver pinpoint accuracy every time. - • **Trusted Precision Metrics:** Exact refractive index of 1.3394 guarantees your density measurements are never off, keeping your data rock-solid. - • **Consistent Conductivity Standard:** 53 µS/cm at 25°C provides a stable electrical conductivity reference for comprehensive calibration. ## Overview The RES60 Refractometer Calibration Standard offers a precise 35 ppt salinity, 1.0264 specific gravity, and 1.3394 refractive index, making it the go-to reference for accurate calibration of seawater refractometers, hydrometers, and other density measurement tools. Trusted by hundreds of professionals, it ensures consistent, reliable results that keep your instruments perfectly tuned. ## Description Accurate reference for the calibration of seawater refractometers, hydrometers & other density measuring equipment. 35 ppt Salinity1. 0264 Specific Gravity1. 3394 Refractive Index53 uS/cm at 25 deg c ## Features - Accurate reference for the calibration of seawater refractometers, hydrometers & other density measuring equipment - 35 ppt Salinity - 1. 0264 Specific Gravity - 1. 3394 Refractive Index - 53 uS/cm at 25 deg c ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078QWLZS5 | | ASIN | B078QWLZS5 | | Age Range Description | All Life Stages | | Best Sellers Rank | #46,380 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #23 in Lab Refractometers | | Brand Name | Brightwell Aquatics | | Customer Reviews | 4.5 4.5 out of 5 stars (392) | | Date First Available | December 31, 2017 | | Date First Available | December 31, 2017 | | Directions | 1. Shake product well before using. 2. Clean Refractometer prism slide with fresh distilled water. 3. Dry completely with soft clean dry cloth. 4. Place several drops of Brightwell Refractometer Calibration Standard fluid on the slide. 5. Wait 45 seconds and calibrate to 35 ppt Salinity. | | Included Components | Refractometer Calibration Standard | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 0.79 x 0.79 x 4.72 inches | | Item Package Dimensions L x W x H | 4.61 x 1.34 x 1.26 inches | | Item Weight | 2.71 ounces | | Item model number | RES60 | | Item model number | RES60 | | Manufacturer | Brightwell Aquatics | | Manufacturer | Brightwell Aquatics | | Model Name | Refractometer Calibration Standard | | Number of Items | 1 | | Product Dimensions | 0.79 x 0.79 x 4.72 inches; 2.72 ounces | | Size | 60-ml | | Specific Uses for Product | Coat | | Target Audience Keyword | fish | ## Images ![Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for the Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60 - Image 1](https://m.media-amazon.com/images/I/5173Yk3UDiL.jpg) ![Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for the Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60 - Image 2](https://m.media-amazon.com/images/I/81EIOuqDMHL.jpg) ## Frequently Bought Together - Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for The Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60 - Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation - 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.hr/products/59530919-brightwell-aquatics-refractometer-calibration-standard-accurate-reference-for-the-calibration](https://www.desertcart.hr/products/59530919-brightwell-aquatics-refractometer-calibration-standard-accurate-reference-for-the-calibration) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-04*