---
product_id: 250454180
title: "Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs)"
brand: "gain express"
price: "€ 35.37"
currency: EUR
in_stock: true
reviews_count: 6
category: "Gain Express"
url: https://www.desertcart.hr/products/250454180-gain-express-orp-redox-meter-tester-1999-1999mv-1-point
store_origin: HR
region: Croatia
---

# 30ml solution 256mV precision 1-point calibration Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs)

**Brand:** gain express
**Price:** € 35.37
**Availability:** ✅ In Stock

## Summary

> 💧 Dive into Precision: Elevate Your Water Quality Game!

## Quick Answers

- **What is this?** Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs) by gain express
- **How much does it cost?** € 35.37 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/250454180-gain-express-orp-redox-meter-tester-1999-1999mv-1-point)

## Best For

- gain express enthusiasts

## Why This Product

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

## Key Features

- • **User-Friendly Design:** Includes a 30ml bottle with clear instructions for effortless calibration.
- • **Versatile Applications:** Perfect for aquariums, pools, and various water quality needs.
- • **Consistency You Can Trust:** Enjoy reliable results that ensure a healthy aquatic environment.
- • **Essential for Aquatic Health:** Maintain the perfect balance in your water systems effortlessly.
- • **Precision at Your Fingertips:** Experience accurate 256mV readings for optimal water quality.

## Overview

The Gain Express ORP Redox Meter Tester offers a high-quality calibration solution with a precise 256mV reading, designed for easy use with a 30ml bottle. It ensures accurate measurements for aquariums, pools, and other water applications, providing reliable results essential for maintaining optimal water quality.

## Description

This optional 256mv calibration solution 30ml is used for Digital Redox Meter -1999mV~1999mV Millivolts Pool Aquarium Oxidation Reduction Potential (ORP)Set includes.2 x solution 30ml

Review: You'll never go back to your old strips - I won't go back to basic test strips again. These are quick and easy for pool water monitoring and the results align well with other more complicated tests I've done.
Review: Gain Express ORP Redox Meter Tester - As described by seller

## Features

- High-quality ORP calibration solution with a precise 256mV reading
- Easy to use with a 30ml bottle and clear instructions
- Accurate measurements for aquariums, pools, and other water applications
- Reliable and consistent results for optimal water quality control
- Essential for maintaining healthy aquatic environments

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08J7NWH3V |
| Best Sellers Rank | #299,861 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #300 in Lab pH Meters |
| Brand Name | Gain Express |
| Color | ORP Sol'n 30ML x 2pcs |
| Customer Reviews | 4.2 4.2 out of 5 stars (26) |
| Manufacturer | Gain Express Holdings Ltd |
| Measurement Type | Millivolts |
| Model | ORP-256MV_2PCS |
| Power Source | Battery Powered |
| UPC | 600316551373 |

## Product Details

- **Brand:** Gain Express
- **Color:** ORP Sol'n 30ML x 2pcs
- **Measurement Type:** Millivolts
- **Power Source:** Battery Powered
- **UPC:** 600316551373

## Images

![Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs) - Image 1](https://m.media-amazon.com/images/I/61sat-i4LpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ You'll never go back to your old strips
*by C***W on October 25, 2025*

I won't go back to basic test strips again. These are quick and easy for pool water monitoring and the results align well with other more complicated tests I've done.

### ⭐⭐⭐⭐⭐ Gain Express ORP Redox Meter Tester
*by M***L on July 11, 2025*

As described by seller

### ⭐⭐⭐ No lot number. Not traceable.
*by U***1 on April 29, 2024*

I like the small size and it was well sealed. It didn't have a lot number, no expiration date and no documentation for traceability.

## Frequently Bought Together

- Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs)
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- YINMIK 12.88 mS/cm Calibration Solution, Conductivity Salinity Calibration Fluid for Salinity Tester, EC Meter, TDS Meter, 7 in 1 Tester Standard Calibration, 4 Bottles of 50mL

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-20*