---
product_id: 645018869
title: "weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher"
brand: "weaqua"
price: "¥2461"
currency: JPY
in_stock: true
reviews_count: 13
category: "Weaqua"
url: https://www.desertcart.jp/products/645018869-weaqua-water-hardness-test-kit-doublecheck-50-strips-hard-water
store_origin: JP
region: Japan
---

# Moisture-proof resealable pouch Double test pads for 100% accuracy Instant results in 30 seconds weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher

**Brand:** weaqua
**Price:** ¥2461
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of hard water woes with precision you can trust!

## Quick Answers

- **What is this?** weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher by weaqua
- **How much does it cost?** ¥2461 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/645018869-weaqua-water-hardness-test-kit-doublecheck-50-strips-hard-water)

## Best For

- weaqua enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Testing:** Simply dip, wait 30 seconds, and compare colors—perfect for home or professional use.
- • **Longest Shelf Life:** Premium resealable pouch locks out humidity to keep all 50 strips fresh and ready.
- • **Double-Check Accuracy:** Two test pads guarantee reliable, matching results every time.
- • **Protect Your Appliances:** Prevent costly limescale damage in dishwashers, coffee makers, and washing machines.
- • **Comprehensive Hardness Range:** Measures calcium & magnesium from 0–425 PPM / 0–25 GPG for precise UK water monitoring.

## Overview

The weAQUA Water Hardness Test Kit offers 50 moisture-sealed strips with dual test pads for unmatched accuracy in measuring calcium and magnesium levels (0–425 PPM / 0–25 GPG). Designed for both home and professional use, it delivers instant results in 30 seconds, helping you protect appliances from limescale damage while ensuring long-lasting strip freshness.

## Description

Product Description weAQUA Water Hardness Test Strips

Review: Water hardness test strips - Item as described and arrived quickly
Review: They are accurate - They work as they shouldand are accurate! I turned off my water to my water softener and took a sample after running the water for a couple of minutes and tested the water and it showed it was very hard, I repeated the test with the softener on and after running the tap to clear the hard water - see the results on the photo, so in my opinion thru are very good value for money!

## Features

- DOUBLE-CHECK ACCURACY – Two identical test pads ensure you can trust your results. When both colors match, you can instantly verify that the measurement is 100% accurate.
- MONITOR UK HARD WATER – Ideal for tracking common hard water issues across the UK. Easily measure calcium and magnesium levels to know exactly when to take action against limescale.
- PROTECT YOUR HOME – Help prevent limescale damage in dishwashers, washing machines, and coffee makers. Extend the lifespan of your appliances by regularly monitoring water hardness.
- LONGEST SHELF LIFE – Our test strips come in a premium, moisture-proof resealable pouch designed to block out humidity. This protective seal ensures every strip remains fresh and reliable from the first test to the last.
- INSTANT RESULTS – Easy to use: simply dip the strip, wait 30 seconds, and compare against the color chart. Suitable for tap water, pools, and spa use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DN15KN9X |
| Best Sellers Rank | 1,980 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 4 in Surface & Hardness Testing |
| Brand | WEAQUA |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 1,323 Reviews |
| Included Components | 50 x Water Hardness Test Strips |
| Item Weight | 0.35 Ounces |
| Manufacturer | WEAQUA |
| Manufacturer Part Number | TDS ECO (1 TDS Meter) - 3 |
| Model Number | Water Hardness 50 Strips |
| Number of items | 1 |
| Recommended Uses For Product | water hardness test |
| Recommended uses for product | water hardness test |
| Sterility Rating | 6.5-8.5 |
| Unit Count | 50.0 count |
| Unit count | 50.0 count |
| pH range | 6.5-8.5 |

## Product Details

- **Brand:** WEAQUA
- **Manufacturer:** WEAQUA
- **Recommended uses for product:** Water Hardness Test

## Images

![weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher - Image 1](https://m.media-amazon.com/images/I/61fEKPNw12L.jpg)
![weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher - Image 2](https://m.media-amazon.com/images/I/71w-vdgdS1L.jpg)
![weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher - Image 3](https://m.media-amazon.com/images/I/61aQu5BxuGL.jpg)
![weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher - Image 4](https://m.media-amazon.com/images/I/61KtCumnvxL.jpg)
![weAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Test Kit – Tests Calcium, Magnesium (0–425 PPM / 0–25 GPG) – for Home & Professional Use, Tap, Pool, Spa, Dishwasher - Image 5](https://m.media-amazon.com/images/I/71c6vGFQVIL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Water hardness test strips
*by A***Y on 2 July 2026*

Item as described and arrived quickly

### ⭐⭐⭐⭐⭐ They are accurate
*by S***E on 7 May 2026*

They work as they shouldand are accurate! I turned off my water to my water softener and took a sample after running the water for a couple of minutes and tested the water and it showed it was very hard, I repeated the test with the softener on and after running the tap to clear the hard water - see the results on the photo, so in my opinion thru are very good value for money!

### ⭐⭐⭐⭐⭐ simple and quick to use
*by P***E on 5 April 2026*

I wanted to confirm my water softener was doing the job. easy to use and the instructions were simple. results in under a minute.

## Frequently Bought Together

- DoubleCheck Water Hardness Test Kit 200 Strips with Sample Cup - Hard Water Testing Strips (0-25 gpg / 0-425 ppm)
- WeAQUA Water Hardness Test Kit - DoubleCheck 50 Strips - Hard Water Testing Kit – Tests Calcium & Magnesium (0–425 PPM) – for Tap, Well, Drinking, Pool, Spa & Dishwasher
- 2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-17*