---
product_id: 4809394
title: "Select® Refills 541640A Test Strip for Swimming Pools"
brand: "aquachek"
price: "10.83 OMR"
currency: OMR
in_stock: true
reviews_count: 12
category: "Aqua Chek"
url: https://www.desertcart.com.om/products/4809394-select-refills-541640a-test-strip-for-swimming-pools
store_origin: OM
region: Oman
---

# App-powered precision 30-second rapid results 7-in-1 multi-parameter test Select® Refills 541640A Test Strip for Swimming Pools

**Brand:** aquachek
**Price:** 10.83 OMR
**Availability:** ✅ In Stock

## Summary

> 💧 Dive into precision: Your pool’s health, decoded in seconds!

## Quick Answers

- **What is this?** Select® Refills 541640A Test Strip for Swimming Pools by aquachek
- **How much does it cost?** 10.83 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/4809394-select-refills-541640a-test-strip-for-swimming-pools)

## Best For

- aquachek enthusiasts

## Why This Product

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

## Key Features

- • **Smart App Integration:** Snap, analyze, and get personalized chemical treatment plans via the free AquaChek Connect app.
- • **Medical-Grade Accuracy:** Leverages advanced medical tech for lab-comparable precision—ditch guesswork and reagent drops.
- • **Comprehensive 7-in-1 Testing:** Monitor pH, chlorine variants, bromine, alkalinity, hardness & cyanuric acid in one strip for total pool mastery.
- • **Instant Results in 30 Seconds:** Quick dip and read—perfect for busy pros who demand fast, reliable pool health checks.
- • **Vibrant, Bleed-Resistant Color Pads:** Engineered paper ensures clear, easy-to-read results even in low light—never second-guess your pool’s status.

## Overview

AquaChek Select® Refills 541640A are advanced 7-in-1 test strips designed for professional-grade pool water analysis. Utilizing medical industry technology, they deliver fast, accurate readings of critical water parameters including pH, chlorine, bromine, alkalinity, hardness, and cyanuric acid. Paired with a free mobile app for instant result interpretation and tailored chemical advice, these strips empower pool owners to maintain pristine, balanced water effortlessly.

## Description

desertcart.com : AquaChek Select® Refills 541640A Test Strip for Swimming Pools : Chem Strips : Patio, Lawn & Garden

Review: A good product. - I have used these for years. They are accurate and never let me down. Easy to use and results take just 15 seconds. Highly recommend.
Review: Quick way to test your spa or pool water - I use Aquachek (there's no 'c') strips to test my spa's water every few days. I'm very happy with these strips, and find them much faster and easier than the other options I've looked at. The bottom of this review explains what the different chemicals do if you're not familiar with them. Pro: + Easy to use: dip them into your pool to wrist depth, set them flat and count to 15 (seconds), then compare colors. + Includes all the tests I care about. Hardness, total and free chlorine, PH, alkalinity, and as a bonus Cyanuric Acid which doesn't apply to my spa. + Colors are easy to read in twilight and lighter. + Includes a pamphlet with a color chart if you lost yours Con: - Colors continue to change after the first minute, so you really do want to look at the colors within the first minute or two. What the different readings are used for: TOTAL HARDNESS tells you if you need to add or remove chemicals to make the water harder. Too little hardness and metal in your pool releases minerals. Too much hardness, and it can gunk things up. Usually this is only checked when adding significant water to the pool. TOTAL CHLORINE / BROMINE and FREE CHLORINE together tell you whether you need to 'shock' the pool to free up bound chlorine / bromine, or whether you just need to add a bit more to replace evaporated chlorine. If you add too much and get a high reading, leave pumps running with the cover off to encourage faster evaporation of the chlorine. I got my 800 gallon spa from 20 ppm to 5 ppm in just a few hours this way. pH and ALKALINITY can affect stability of chlorine levels, so good to keep them where they belong. CYANURIC ACID is (I think) an additive to help keep sunlight from decaying your chemicals as quickly. My spa is in a gazebo so I don't use it. Overall, I like these test strips and have been using them for a year or two.

## Features

- 7-IN-1 TEST STRIPS: Tests the most critical parameters: pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, & Cyanuric Acid
- AQUACHEK ACCURACY: Using medical industry technology, our test strips offer comparable accuracy to liquid tests; No measuring & counting drops of reagent, leaving less room for error
- FREE MOBILE APP: It uses photo capture technology to interpret results & provides a tailored chemical treatment plan for your pool; No more guesswork with AquaChek Connect app
- EASY TO USE: Dip the 7-way strip & compare with the color chart; Accurate results in 30 seconds; Ideal for those with the Select Complete Kit; Test water at least twice a week for safe, balanced water
- SAFE & CLEAN WATER: Each color pad is designed with unique paper to optimize color vibrancy & mitigate color-bleeding to help maintain healthy water chemistry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000V87OU0 |
| Best Sellers Rank | #30,932 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #53 in Swimming Pool Test Strips |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,982) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item model number | 541640 |
| Manufacturer | AquaChek |
| Product Dimensions | 4 x 1 x 6 inches |

## Product Details

- **Brand:** AquaChek
- **Manufacturer:** AquaChek
- **Ph Range:** 7.2 to 7.8
- **Recommended Uses For Product:** Pool
- **Unit Count:** 50.0 Count

## Images

![Select® Refills 541640A Test Strip for Swimming Pools - Image 1](https://m.media-amazon.com/images/I/71k56Om2bdL.jpg)

## Questions & Answers

**Q: How do I use these test strips?**
A: Just dip and check—it’s that simple. Dip one strip into your pool or spa water and remove it immediately. Hold the strip level (don’t shake off water) for 15 seconds, then compare the color pads to the chart on the Select Connect kit.

**Q: Do test strips expire?**
A: Yes, AquaChek test strips expire 18 months from the date of manufacture. To ensure accuracy, always check the expiration date printed on the top of the bottle cap before use. Using expired strips may result in incorrect readings.

**Q: Why are there 50 strips in each bottle?**
A: Limiting the bottle to 50 strips helps ensure you’re using fresh, accurate strips throughout the season—especially since water chemistry readings are most reliable when the strips are fresh.

**Q: Should I stock up on test strips?**
A: We don't recommend stocking up. If you're testing your pool once a week as recommended, a single bottle of 50 test strips is more than enough to last an entire swim season. Accurate results require fresh strips.

**Q: Do you have any tips for keeping the strips fresh and accurate?**
A: Yes! Only put dry fingers into the bottle. Take one strip out at a time, then close the bottle immedialty. Keep the bottle tightly closed in a cool, dry place, away from moisture. Do not remove the desiccant packet inside, it helps preserve strips.

## Customer Reviews

### ⭐⭐⭐⭐⭐ A good product.
*by N***Y on March 4, 2024*

I have used these for years. They are accurate and never let me down. Easy to use and results take just 15 seconds. Highly recommend.

### ⭐⭐⭐⭐⭐ Quick way to test your spa or pool water
*by J***R on July 14, 2012*

I use Aquachek (there's no 'c') strips to test my spa's water every few days. I'm very happy with these strips, and find them much faster and easier than the other options I've looked at. The bottom of this review explains what the different chemicals do if you're not familiar with them. Pro: + Easy to use: dip them into your pool to wrist depth, set them flat and count to 15 (seconds), then compare colors. + Includes all the tests I care about. Hardness, total and free chlorine, PH, alkalinity, and as a bonus Cyanuric Acid which doesn't apply to my spa. + Colors are easy to read in twilight and lighter. + Includes a pamphlet with a color chart if you lost yours Con: - Colors continue to change after the first minute, so you really do want to look at the colors within the first minute or two. What the different readings are used for: TOTAL HARDNESS tells you if you need to add or remove chemicals to make the water harder. Too little hardness and metal in your pool releases minerals. Too much hardness, and it can gunk things up. Usually this is only checked when adding significant water to the pool. TOTAL CHLORINE / BROMINE and FREE CHLORINE together tell you whether you need to 'shock' the pool to free up bound chlorine / bromine, or whether you just need to add a bit more to replace evaporated chlorine. If you add too much and get a high reading, leave pumps running with the cover off to encourage faster evaporation of the chlorine. I got my 800 gallon spa from 20 ppm to 5 ppm in just a few hours this way. pH and ALKALINITY can affect stability of chlorine levels, so good to keep them where they belong. CYANURIC ACID is (I think) an additive to help keep sunlight from decaying your chemicals as quickly. My spa is in a gazebo so I don't use it. Overall, I like these test strips and have been using them for a year or two.

### ⭐⭐⭐⭐⭐ Easy to use
*by M***O on October 3, 2025*

These are great they take the guesswork out of reading them. You download the app, for free and the app takes a picture of it and reads it. It tells you how to fix any issues you have. Plus it keeps a history of you; it’s so easy to use.

## Frequently Bought Together

- AquaChek 541640A Select Refills Test Strip for Swimming Pools
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- AquaChek Select Connect 7-Way Pool and Spa Test Strips Complete Kit - Pool Test Strips for pH, Total Chlorine, Free Chlorine, Bromine, Alkalinity, Total Hardness, and Cyanuric Acid - (50 Strips)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-09*