---
product_id: 7325891
title: "Krowne S25-123 Chlorine Test Strips, 1-Pack"
brand: "krowne"
price: "₩19996"
currency: KRW
in_stock: true
reviews_count: 13
category: "Krowne"
url: https://www.desertcart.kr/products/7325891-krowne-s25-123-chlorine-test-strips-1-pack
store_origin: KR
region: South Korea
---

# Color-coded easy-read chart Test range 0-200 ppm 100 strips per bottle Krowne S25-123 Chlorine Test Strips, 1-Pack

**Brand:** krowne
**Price:** ₩19996
**Availability:** ✅ In Stock

## Summary

> 🧼 Stay ahead of germs with every test—because clean is the new cool!

## Quick Answers

- **What is this?** Krowne S25-123 Chlorine Test Strips, 1-Pack by krowne
- **How much does it cost?** ₩19996 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/7325891-krowne-s25-123-chlorine-test-strips-1-pack)

## Best For

- krowne enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Use Case:** Ideal for bleach-based sanitizers in pools, wells, and surface disinfection—trusted by pros.
- • **Instant Visual Feedback:** Color-coded chart makes interpreting chlorine levels effortless and foolproof.
- • **Bulk Supply, Bulk Savings:** 100 test strips per bottle means long-lasting reliability without constant reordering.
- • **Extend Your Strips’ Life:** Easily tear strips in half to double your testing power and maximize value.
- • **Precision Sanitizer Monitoring:** Ensure your bleach solutions hit the perfect disinfecting strength every time.

## Overview

Krowne S25-123 Chlorine Test Strips provide a professional-grade solution for accurately measuring chlorine concentration in bleach-based sanitizing solutions. Each bottle contains 100 easy-to-use strips with a clear color-coded chart, covering a test range from 0 to 200 ppm. Perfect for ensuring optimal disinfectant strength in pools, wells, and cleaning applications, these strips help you maintain safe, effective sanitation with confidence and cost-efficiency.

## Description

Chlorine Test Strips, sanitizer test strips for bleach-based solutions, 100 strips per bottle, color-coded chart, test range (0-200 ppm), loose‌​‌‌‍​​‌‌​‌‌‍​​‌‌‌​‍​​‌‌‌​‍​‌​​‌​‍​​‌‌‌‌​‍​​‌‌​‌‍​​‌‌​​‍​​‌‌‌‌​‍​‌​​‌​‍​​‌‌‌‌‍​​‌‌‌‌‍​​‌‌​​‍​​‌‌‌‌‍​​‌​‌‌‍​​​‌‌‌‍​​‌‌​​‍​​‌​‌‌‍​​‌‌‌‌​‍​​​‌‌‌‍​​‌‌‌​​‍​​​‌‌​

Review: A great way to test the strength of your bleach solution - I regularly make my own chlorine bleach. Sodium hypochlorite (household liquid bleach) degrades over time and has a shelf life of about 3-5 months. Rather than stock up on bleach only to have it deteriorate over time, I buy pool shock (calcium hypochlorite) and use it to mix up a fresh batch of bleach as needed. I not only have the ability to store extra bleach without having to worry about the shelf life, but I also save a lot of money - a 1 lb package of pool shock is about $4, which can make A LOT of gallons of bleach. I wanted to test the strength of my bleach after it was diluted in a gallon of water to make sure the concentration was correct. I suspected that the most recent gallon I made was not strong enough, and I used these test strips to confirm my suspicion. After adding a bit more calcium hypochlorite to the solution, I was able to get the concentration correct; the test strips were noticeably darker and easy to read. (Just to be clear, I was testing the gallon of water that I'd added bleach to, not the bleach directly). Keep in mind that these test strips are not designed to test chlorine levels in tap water; if that's your purpose, then you need to buy a different product; this type of test strip is designed to measure levels of chorine in different dilutions (added to water) so that you know there is enough to sanitize or disinfect surfaces. For most microorgansims (bacteria and viruses), a level of 200 ppm is considered adequate. For killing mold, a higher concentration is necessary (I believe 2,000 ppm). The CDC has a really helpful list of how many ppm of bleach is required to kill various pathogens. I am very pleased with these test strips; they were easy to use and allowed me to verify the strength of my solution. I also found that I was able to rip a test strip in half so that I can make them last even longer. If you have any questions, I'm happy to try to help. Please consider leaving me feedback below if you found this review helpful.
Review: Excellent product for what it does. - I use these to check for remaining bleach after sanitizing my well or after changing whole house filters and sanitizing. Cost effective.

## Features

- One bottle of test strips, Sanitizer test strips for Bleach-Based Solutions, 100 strips per bottle, Color-coded chart, Test Range: 0-200 ppm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003Z9HWQ8 |
| Best Sellers Rank | #155,219 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #151 in Swimming Pool Test Strips |
| Date First Available | August 11, 2010 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.352 ounces |
| Item model number | S25-123 |
| Manufacturer | Krowne |
| Product Dimensions | 4 x 0.5 x 3 inches |

## Product Details

- **Brand:** Krowne
- **Manufacturer:** Krowne
- **Ph Range:** 7.2-7.6
- **Recommended Uses For Product:** Chlorine in Swimming Pool Water
- **Unit Count:** 1.0 Count

## Images

![Krowne S25-123 Chlorine Test Strips, 1-Pack - Image 1](https://m.media-amazon.com/images/I/51pFgCrAMYL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: how many?**
A: 100

**Q: what is the actual range of chlorine that it tests for? it shows some ambiguous numbers, but what are the units of those numbers?**
A: It ranges from 10,50,100,and 200 P.P.M (Parts Per Million) Available Chlorine

**Q: Will this test fro strength of HOCl**
A: No idea. They are test strips that turn color to meet a PH Level.

**Q: How do you test chlorine in a pool with these strips? When I try strip stays white.**
A: This is not used for testing chlorine in a pool.  It is more used more testing the bleach mixture in your #3 cleaning solution like in a spray bottle.(100-200ppm).  That will sanitize the clean areas, dishes, toys etc.  Amazon has great Pool Testing Equipment kits and so on.  Search for that.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A great way to test the strength of your bleach solution
*by A***I on April 28, 2017*

I regularly make my own chlorine bleach. Sodium hypochlorite (household liquid bleach) degrades over time and has a shelf life of about 3-5 months. Rather than stock up on bleach only to have it deteriorate over time, I buy pool shock (calcium hypochlorite) and use it to mix up a fresh batch of bleach as needed. I not only have the ability to store extra bleach without having to worry about the shelf life, but I also save a lot of money - a 1 lb package of pool shock is about $4, which can make A LOT of gallons of bleach. I wanted to test the strength of my bleach after it was diluted in a gallon of water to make sure the concentration was correct. I suspected that the most recent gallon I made was not strong enough, and I used these test strips to confirm my suspicion. After adding a bit more calcium hypochlorite to the solution, I was able to get the concentration correct; the test strips were noticeably darker and easy to read. (Just to be clear, I was testing the gallon of water that I'd added bleach to, not the bleach directly). Keep in mind that these test strips are not designed to test chlorine levels in tap water; if that's your purpose, then you need to buy a different product; this type of test strip is designed to measure levels of chorine in different dilutions (added to water) so that you know there is enough to sanitize or disinfect surfaces. For most microorgansims (bacteria and viruses), a level of 200 ppm is considered adequate. For killing mold, a higher concentration is necessary (I believe 2,000 ppm). The CDC has a really helpful list of how many ppm of bleach is required to kill various pathogens. I am very pleased with these test strips; they were easy to use and allowed me to verify the strength of my solution. I also found that I was able to rip a test strip in half so that I can make them last even longer. If you have any questions, I'm happy to try to help. Please consider leaving me feedback below if you found this review helpful.

### ⭐⭐⭐⭐⭐ Excellent product for what it does.
*by L***A on October 26, 2025*

I use these to check for remaining bleach after sanitizing my well or after changing whole house filters and sanitizing. Cost effective.

### ⭐⭐⭐⭐⭐ I used these to chlorinate my well. Works very ...
*by D***N on February 1, 2018*

I used these to chlorinate my well. Works very well. I was able to get an exact parts per million reading.

## Frequently Bought Together

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-03*