---
product_id: 263621399
title: "EXTECH Instruments RE300 ExStik ORP Meter"
brand: "extech instruments"
price: "€ 432.86"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/263621399-extech-instruments-re300-exstik-orp-meter
store_origin: FI
region: Finland
---

# IP57 waterproof Range: -999 to 999mV Auto calibration EXTECH Instruments RE300 ExStik ORP Meter

**Brand:** extech instruments
**Price:** € 432.86
**Availability:** ✅ In Stock

## Summary

> 🔍 Measure with Confidence: Your ORP Companion!

## Quick Answers

- **What is this?** EXTECH Instruments RE300 ExStik ORP Meter by extech instruments
- **How much does it cost?** € 432.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/263621399-extech-instruments-re300-exstik-orp-meter)

## Best For

- extech instruments enthusiasts

## Why This Product

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

## Key Features

- • **Rugged Design:** IP57 waterproof rating protects your investment from wet environments, perfect for fieldwork or lab settings.
- • **Visual Feedback:** Simulated analog bargraph provides instant visual feedback on ORP changes, making data interpretation a breeze.
- • **Smart Calibration:** Automatic electronic self-calibration means you spend less time setting up and more time achieving results.
- • **Precision Measurement:** Accurately measures ORP/Redox levels from -999 to 999mV, ensuring reliable data for your projects.
- • **User-Friendly Features:** Includes data hold, auto power off, and low battery indication for a seamless user experience.

## Overview

The ExtechRE300 ExStik ORP Meter is a cutting-edge device designed for precise measurement of ORP/Redox levels, featuring automatic calibration, a waterproof design, and user-friendly functionalities that make it ideal for both professional and field applications.

## Description

Instruments RE300 ExStik ORP Meter

## Features

- Measures ORP/Redox from -999 to 999mV
- Automatic electronic self calibration
- Simulated analog bargraph displays change in ORP reading
- Waterproof to IP57 protects meter from wet environment
- Data hold, auto power off and low battery indication

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000S8UIVA |
| Batteries | 4 Lithium Metal batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | NiMH |
| Best Sellers Rank | #214,818 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Dissolved Oxygen Meters & Accessories |
| Color | Blue/Grey |
| Customer Reviews | 4.1 4.1 out of 5 stars (32) |
| Date First Available | June 20, 2007 |
| Description Pile | 4 × CR2032 (3V) batteries |
| Included Components | RE305 flat surface ORP electrode, cap, cup, batteries, neck strap |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4.2 ounces |
| Item model number | RE300 |
| Manufacturer | Extech |
| Measurement Accuracy | +/-0.5% |
| Mounting Type | Surface Mount |
| Number Of Pieces | 1 |
| Part Number | RE300 |
| Power Source | Battery Powered |
| Product Dimensions | 0.75 x 0.75 x 200.1 inches |
| Style | RE300 |
| Voltage | 3 Volts |
| Warranty Description | Full one year warranty on parts and workmanship, unless otherwise specified. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. |

## Product Details

- **Brand:** Extech Instruments
- **Item Weight:** 0.12 Kilograms
- **Battery Description:** 4 × CR2032 (3V) batteries
- **Mounting Type:** Surface Mount
- **Voltage:** 3 Volts

## Images

![EXTECH Instruments RE300 ExStik ORP Meter - Image 1](https://m.media-amazon.com/images/I/41E6wRYvaLL.jpg)

## Questions & Answers

**Q: Good morning, i would like to know how many probes are included in the instrument? in the second image i see two probes, could i send a real-time imag**
A: Thank you for your question. The full set includes:
Complete with 6 x AA batteries, SD card, hard carrying case,
sample buffers, mini pH electrode (60120B), and Thermistor
temperature probe (850188)

**Q: Can this perform orp readings without orp electrode? or do we have to buy 67500b standard orp electrode additionally? if so can you offer that as well**
A: Yes, you would need to order the orp probe to measure the orp.

**Q: Is this unit capable of continuous immersion logging of typical drinking water to SD card? We'll calibrate every 24 hours, but weekly is better**
A: Thank you so much for your interest in our products. Yes, the SDL100 is capable to datalog information from 1 second to almost 9 hours. All this data will be saved on the SD card. Please notice that the SD card capacity is up to 16GB. Please check all the specifications of this unit here http://www.extech.com/products/resources/SDL100_UM-en.pdf

**Q: What is the settling time for the ORP meter in weak redox solution such as tap water?**
A: It's bad

## Frequently Bought Together

- EXTECH Instruments RE300 ExStik ORP Meter
- Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each
- Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-17*