---
product_id: 50057485
title: "Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display"
brand: "extech"
price: "£132.68"
currency: GBP
in_stock: true
reviews_count: 11
category: "Extech"
url: https://www.desertcart.co.uk/products/50057485-extech-ph100-waterproof-exstik-ii-ph-meter-kit-with-flat
store_origin: GB
region: United Kingdom
---

# Waterproof design for rugged use Includes 4 lithium batteries for long runtime Wide temp range -58°F to 572°F Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display

**Brand:** extech
**Price:** £132.68
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay ahead with precision pH insights wherever you go!

## Quick Answers

- **What is this?** Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display by extech
- **How much does it cost?** £132.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/50057485-extech-ph100-waterproof-exstik-ii-ph-meter-kit-with-flat)

## Best For

- extech enthusiasts

## Why This Product

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

## Key Features

- • **Built for the Field:** Waterproof and durable PE body stands up to tough industrial and lab environments.
- • **Smart Power Management:** Auto power-off after 1 hour conserves battery life for uninterrupted workflow.
- • **Precision pH & Temp in One:** Flat surface electrode with integrated temperature display ensures accurate, real-time readings.
- • **Ready to Use Out of the Box:** Includes 4 lithium batteries and protective sensor cap for immediate, hassle-free deployment.
- • **Flexible Stainless Steel Probe:** Adjustable 4.5-inch probe rotates 0° to 180° with detents for versatile measurement angles.

## Overview

The Extech PH100 Waterproof ExStik II pH Meter Kit combines a rugged, waterproof design with a flat surface electrode and integrated temperature display, delivering fast, accurate pH and temperature measurements. Featuring an adjustable stainless steel probe with multiple angle detents and smart auto power-off, it’s engineered for professionals demanding reliable, on-the-go water quality testing. Batteries included for instant use.

## Description

From the manufacturer Overview Teledyne FLIR designs, develops, manufactures, markets, and distributes technologies which enhance perception and awareness. We bring innovative sensing solutions into daily life through our thermal imaging, visible-light imaging, video analytics, measurement and diagnostic, and advanced threat detection systems. About Us Teledyne FLIR offers a diversified portfolio which serves a number of applications in government and defense, industrial, and commercial markets. Our products help first responders and military personnel protect and save lives, promote efficiency within the trades, and good technologies.

Review: just the job we use a few of these and ... - just the job we use a few of these and always does what it is supposed to do ie tells us the PH of the water leaving the factory
Review: It does its job but it doesn’t last - The pH meter does its job but it lasts only a couple of months. Being that the probe can’t be replaced, I think it’s expensive. I wish the readings were more stable as well cause it takes time to show a reading and even so it keeps changing.

## Features

- Stem thermometer with adjustable stainless steel probe
- 4.5-Inch (114mm) stainless steel probe adjusts from 0 to 180-Degrees for storage or measurement
- Detents at 45-Degrees , 90-Degrees , 135-Degrees , and 180-Degrees
- Fast response; auto Power off after 1 hour
- Temperature:-58 to 572-Degrees F (-50 to 300-Degrees C)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00023RYQ8 |
| Best Sellers Rank | 20,901 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 32 in Lab pH Meters |
| Brand | Extech |
| Colour | Green |
| Country Of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 273 Reviews |
| Global Trade Identification Number | 00793950051009 |
| Included Components | Protective sensor cap |
| Included components | Protective sensor cap |
| Item Weight | 3.8 Ounces |
| Manufacturer | Extech |
| Manufacturer Part Number | PH100 |
| Model Name | PH100 |
| Model Number | PH100 |
| Model name | PH100 |
| Number of Batteries | 4 Lithium Metal batteries required. (included) |
| Power Source | corded-electric |
| Power source | corded-electric |
| Smart Home Compatibility | Not Smart Home Compatible |
| Style Name | pH |
| UPC | 723434132528 793950051009 |
| Unit Count | 1 Medidor |
| Unit count | 1 Medidor |
| Upper Temperature Rating | 90 Degrees Celsius |

## Product Details

- **Battery description:** Alkaline
- **Brand:** Extech
- **Colour:** Green
- **Item weight:** 0.12 Kilograms
- **Product dimensions:** 41W x 36H millimetres

## Images

![Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display - Image 1](https://m.media-amazon.com/images/I/61dMzzktUcL.jpg)
![Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display - Image 2](https://m.media-amazon.com/images/I/71+f4jhfEeL.jpg)
![Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display - Image 3](https://m.media-amazon.com/images/I/91mbZanYgXL.jpg)
![Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display - Image 4](https://m.media-amazon.com/images/I/81ZzyxVQHiL.jpg)
![Extech PH100 Waterproof ExStik II pH Meter Kit with Flat Surface Electrode and Temperature Display - Image 5](https://m.media-amazon.com/images/I/71Sn3qKlMrL.jpg)

## Questions & Answers

**Q: How would it test pH in a person?  How can we do it once purchased?**
A: I am not sure if you can use this to test the pH if a person.  Perhaps by putting it in sweaty skin.  You should call manufacturer to see if they can answer your question.

**Q: can i use this meter for cheesemaking?**
A: Don't see why notCheesemaking websites list similar ones, maybe less precise than this but same technology

**Q: Can I use for stiff dough?**
A: Yes you can.  This can read liquids and solids.  I use mine to measure the ph of cheese curds and whey.

**Q: I have a very similar meter but it is "ph110" instead of "ph100." will this "ph105" sensor work with the "ph110?"**
A: Yes the PH105 is the replacement pH electrode for both the PH100 and PH110.

## Customer Reviews

### ⭐⭐⭐⭐⭐ just the job we use a few of these and ...
*by C***S on 11 December 2015*

just the job we use a few of these and always does what it is supposed to do ie tells us the PH of the water leaving the factory

### ⭐⭐⭐ It does its job but it doesn’t last
*by M***M on 25 March 2024*

The pH meter does its job but it lasts only a couple of months. Being that the probe can’t be replaced, I think it’s expensive. I wish the readings were more stable as well cause it takes time to show a reading and even so it keeps changing.

### ⭐⭐ Over-priced, flimsy and hard to maintain
*by A***R on 8 June 2025*

Doesn't last and impossible to find replacement filler solution. The cost of a new electrode (if you can find one) is more than the cost of a a new pH meter. It's over-priced and has poor support after sale.

## Frequently Bought Together

- Extech Instruments PH100 Waterproof pH Metre
- ph buffer 7 300ml & ph buffer 4 300ml growth technology free 100ml formulex

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-24*