---
product_id: 173810442
title: "Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA"
brand: "taylor technologies inc"
price: "€ 21.07"
currency: EUR
in_stock: true
reviews_count: 8
category: "Taylor Technologies Inc"
url: https://www.desertcart.be/products/173810442-technologies-r-0012-c-hardness-reagent-2-ounce-for-testing
store_origin: BE
region: Belgium
---

# 2 oz liquid Calcium hardness test Made in USA Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA

**Brand:** taylor technologies inc
**Price:** € 21.07
**Availability:** ✅ In Stock

## Summary

> 💦 Dive into crystal-clear water with confidence!

## Quick Answers

- **What is this?** Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA by taylor technologies inc
- **How much does it cost?** € 21.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/173810442-technologies-r-0012-c-hardness-reagent-2-ounce-for-testing)

## Best For

- taylor technologies inc enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Since 1930:** Join the legacy of quality with Taylor's American-made products.
- • **Reliable Replacement:** Replace your reagents annually to ensure accurate results.
- • **User-Friendly Instructions:** Non-technical language and pictograms make testing a breeze.
- • **Extend Your Test Kit's Life:** Keep your pool or spa sparkling with this 2 oz dropper refill!
- • **Professional Quality for Everyone:** Designed for both homeowners and professionals alike.

## Overview

The Taylor R-0012-C Hardness Reagent is a 2-ounce dropper refill designed for testing calcium hardness in pools and spas. This easy-to-use liquid reagent is perfect for both homeowners and professionals, ensuring accurate water testing with user-friendly instructions. Proudly made in the USA, Taylor has been a trusted name in water testing since 1930.

## Description

Taylor R0012C #12 2 oz Hardness Reagent

Review: The best - Accurate readings
Review: Good price - Works as it should.

## Features

- Get the Most out of Your Test Kit – Extend the life of your pool or spa test kit with this Hardness Reagent 2 ounce dropper refill. This is an easy-to-use test reagent for Calcium Hardness, a common water test parameter.
- Quick & Easy to Use – Simply collect your water sample using the comparator and add the appropriate testing reagents to determine the results. Product instructions are written in non-technical language with easy-to-understand pictograms.
- Pool & Spa Test Kits Built to Last – With testing kits built to last, you’ll find yourself needing to replace your Taylor reagents before the entire kit. Replacement reagents are available separately in .75oz and 2oz sizes, so you can easily replace your pool testing chemicals every season.
- For Homeowners and Professionals – Taylor products are built to professional standards but with processes easy enough for any pool or spa owner to use. With unparalleled customer service and support, Taylor is the go-to for every distributor, retailer, commercial operation, and homeowner… wherever water is tested.
- Proudly Made in the USA – Since 1930, Taylor Technologies has been the leading developer of water testing products. All Taylor products are engineered and manufactured in the USA. You can trust that when you choose Taylor, you will receive the highest quality water testing equipment on the market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002IT2ZCC |
| Best Sellers Rank | #5,730 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Analytical Reagents |
| Brand | TAYLOR TECHNOLOGIES INC |
| Brand Name | TAYLOR TECHNOLOGIES INC |
| Customer Reviews | 4.7 out of 5 stars 398 Reviews |
| Item Form | Liquid |
| Item Type Name | Taylor R0012C #12 2 oz Hardness Reagent |
| Item Weight | 0.14 Pounds |
| Manufacturer | Taylor Technologies |
| Manufacturer Part Number | R-0012-C-12 |
| Model Number | R0012C |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Benefits | Maintains clean, balanced pool water chemistry |
| UPC | 840036000670 840036000663 |
| Unit Count | 2.0 Ounce |

## Product Details

- **Brand:** TAYLOR TECHNOLOGIES INC
- **Item Weight:** 0.01 Ounces
- **Item Form:** Liquid
- **Product Benefits:** Maintains clean, balanced pool water chemistry
- **UPC:** 840036000670 840036000663

## Images

![Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Image 1](https://m.media-amazon.com/images/I/710UKbOVZaL.jpg)
![Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Image 2](https://m.media-amazon.com/images/I/81nWzq-uccL.jpg)
![Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Image 3](https://m.media-amazon.com/images/I/81dxJXl3z4L.jpg)
![Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Image 4](https://m.media-amazon.com/images/I/81eiGXhlWpL.jpg)
![Technologies R-0012-C, Hardness Reagent, 2 Ounce, for Testing Calcium Hardness in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Image 5](https://m.media-amazon.com/images/I/91QMG5hT51L.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best
*by Y***R on October 15, 2025*

Accurate readings

### ⭐⭐⭐⭐⭐ Good price
*by W***C on February 17, 2025*

Works as it should.

### ⭐⭐⭐⭐⭐ Works
*by D***D on February 19, 2026*

Works

## Frequently Bought Together

- Taylor R0012C #12 2 oz Hardness Reagent
- Taylor Technologies R-0010-C Calcium Buffer 2 OZ
- TAYLOR TECHNOLOGIES INC R-0011L-C CALCIUM IND LIQUID 2 OZ

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-27*