---
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: "€ 30.06"
currency: EUR
in_stock: true
reviews_count: 13
category: "Brightwell Aquatics"
url: https://www.desertcart.fr/products/59530919-brightwell-aquatics-refractometer-calibration-standard-accurate-reference-for-the-calibration
store_origin: FR
region: France
---

# 35 ppt Salinity precision 1.3394 Refractive Index accuracy 1.0264 Specific Gravity exactness Brightwell Aquatics Refractometer Calibration Standard, Accurate Reference for The Calibration of Seawater Refractometers, Hydrometers & Other Density Measuring Equipment, RES60

**Brand:** brightwell aquatics
**Price:** € 30.06
**Availability:** ✅ In Stock

## Summary

> 🌟 Calibrate like a pro, measure like a legend!

## 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?** € 30.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/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

- • **Compact & Ready-to-Use:** 60 ml bottle designed for easy handling and quick calibration sessions.
- • **Multi-Device Compatibility:** Perfectly calibrates refractometers, hydrometers, and other density measurement tools.
- • **Trusted 35 ppt Salinity Standard:** Industry-verified salinity level that outperforms inconsistent competitors.
- • **Precision-Calibrated for Professionals:** Ensure your seawater refractometers and hydrometers deliver spot-on readings every time.
- • **Proven Reliability with 4.3⭐ Reviews:** Join hundreds of professionals who trust Brightwell for consistent accuracy.

## Overview

Brightwell Aquatics Refractometer Calibration Standard RES60 is a precision 60 ml solution designed to calibrate seawater refractometers, hydrometers, and density measurement devices with exact 35 ppt salinity, 1.0264 specific gravity, and 1.3394 refractive index values—trusted by professionals for unmatched accuracy and reliability.

## 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

Review: Recommend! - Recommend!
Review: Accurate calibration std. - Advertised as 35 PPT and it was spy on, verified against 4 refractometers and 3 electronic readers. Brighter ll is always as advertised, unlike a few competitors that can be all over the map

## 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 | #70,096 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #39 in Lab Refractometers |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.3 4.3 out of 5 stars (385) |
| 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommend!
*by C***E on February 7, 2026*

Recommend!

### ⭐⭐⭐⭐⭐ Accurate calibration std.
*by B***E on July 13, 2022*

Advertised as 35 PPT and it was spy on, verified against 4 refractometers and 3 electronic readers. Brighter ll is always as advertised, unlike a few competitors that can be all over the map

### ⭐⭐⭐⭐⭐ A must for salt water tanks
*by R***N on July 13, 2025*

This is a life saver - literally. I ordered a new refractor and without this could have killed everything by drastically changing the salt % in my reef tank .

## 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

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---

*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-12*