---
product_id: 42680143
title: "Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs."
brand: "imerys clack"
price: "RM2371"
currency: MYR
in_stock: true
reviews_count: 8
category: "Imerys Clack"
url: https://www.desertcart.com.my/products/42680143-imerys-a8021-01-calcite-neutralizes-low-ph-or-acidic-water
store_origin: MY
region: Malaysia
---

# Adjustable 3-6 GPM Service Flow Optimal 24-30 inch Media Depth 100% Calcium Carbonate Purity Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs.

**Brand:** imerys clack
**Price:** RM2371
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water game—neutralize acidity like a pro!

## Quick Answers

- **What is this?** Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs. by imerys clack
- **How much does it cost?** RM2371 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/42680143-imerys-a8021-01-calcite-neutralizes-low-ph-or-acidic-water)

## Best For

- imerys clack enthusiasts

## Why This Product

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

## Key Features

- • **Corrosion Defense:** Prevents blue/green stains and copper pipe corrosion, preserving your home’s infrastructure.
- • **Precision pH Control:** Neutralizes acidic water to protect your plumbing and enhance water quality.
- • **Versatile Installation:** Compatible with both upflow and downflow filter tanks for flexible system design.
- • **Trusted Industrial Grade:** Imerys brand with 4.5-star rating, delivering reliable, professional-grade water treatment.
- • **Optimized Backwash Efficiency:** Supports 8-12 GPM per square foot backwash rate ensuring long-lasting media performance.

## Overview

Imerys (A8021-01) Calcite is a premium 100% calcium carbonate granular media designed to neutralize low pH or acidic water. Ideal for both upflow and downflow filtration systems, it prevents corrosion and staining in copper plumbing by maintaining optimal pH levels. With precise media depth and backwash rates, it ensures efficient, long-lasting water treatment trusted by professionals.

## Description

This product is a 100% calcium carbonate filter media for pH correction, also known as calcite. It prevents blue/green stains and corrosion of copper plumbing in water with acidic levels. can be used upflow or downflow (backwashing) tanks. A gravel support bed recommended. The range should 5.0-7.0, depth 24-30 inches freeboard 50% (minimum). backwash rate 8-12 gallons per minute square foot, the expansion 35% depth. service flow 3-6 but may modified to adapt local conditions.

Review: Acid neutralize - Better than all other brands I've tried.
Review: Don’t be cheap - Get the bigger size calcite if you’re running your household water through it

## Features

- Neutralizes LoNeutralizes Low pH or Acidic Waterw pH or Acidic Water
- Naturally occurring material.
- Low uniformity coefficient for maximum contact for controlled pH correction.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005XTV9X0 |
| Best Sellers Rank | #103,108 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #122 in Chemical Acids |
| Brand | Imerys Clack |
| Customer Reviews | 4.5 4.5 out of 5 stars (57) |
| Item Form | Granular |
| Item Weight | 1 pounds |
| Item model number | WATTS-A8021-50 |
| Manufacturer | Imerys |
| Number of Items | 1 |
| Product Benefits | Neutralizes Low pH or Acidic Water |
| Product Dimensions | 3.5 x 13 x 22 inches |
| UPC | 645871731303 |
| Unit Count | 800.0 Fluid Ounces |

## Product Details

- **Brand:** Imerys Clack
- **Item Form:** Granular
- **Item Weight:** 1 Pounds
- **Product Benefits:** Neutralizes Low pH or Acidic Water
- **UPC:** 645871731303

## Images

![Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs. - Image 1](https://m.media-amazon.com/images/I/411tKHAS0KL.jpg)

## Questions & Answers

**Q: can this be used in ecowater water filtration system?**
A: I use this product to adjust the PH in my well water. It works great.

**Q: Is this product a powder or solid rocks?**
A: It’s granules so like a powder. I use in my house water treatment system to de-acidify.

**Q: What is the weight if this product. You stated it as 1 pound**
A: This is a 50 lb bag

**Q: Is this 100% calcite?**
A: I'm no chemist, but the material looks to be consistent and is pure white with no other flecks of different material.  It works well for PH correction.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Acid neutralize
*by N***S on February 13, 2025*

Better than all other brands I've tried.

### ⭐⭐⭐⭐⭐ Don’t be cheap
*by J***N on March 5, 2024*

Get the bigger size calcite if you’re running your household water through it

### ⭐⭐⭐⭐⭐ Not all calcites are the same
*by J***A on December 5, 2023*

Very good quality product. Big improvement to what I had been using. Will buy again.

## Frequently Bought Together

- Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs.
- Funnel for Resin & Mineral Tanks - 2.5-inch x 10-inch
- Clack A8011 Corosex Brownish White Aggressive pH Correction Media for Acidic Water, 0.66 CF Bag

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.my/products/42680143-imerys-a8021-01-calcite-neutralizes-low-ph-or-acidic-water](https://www.desertcart.com.my/products/42680143-imerys-a8021-01-calcite-neutralizes-low-ph-or-acidic-water)

---

*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-14*