---
product_id: 37692500
title: "Copper Sulfate Large Crystals 25lb Bag 99% Pure"
brand: "earthworks health llc"
price: "€ 360.31"
currency: EUR
in_stock: true
reviews_count: 4
category: "Earthworks Health Llc"
url: https://www.desertcart.de/products/37692500-copper-sulfate-large-crystals-25lb-bag-99-pure
store_origin: DE
region: Germany
---

# Slow Dissolution Crystals 25lb Bulk Bag 99.9% Purity Copper Sulfate Large Crystals 25lb Bag 99% Pure

**Brand:** earthworks health llc
**Price:** € 360.31
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your projects with premium copper sulfate—purity and power in every crystal!

## Quick Answers

- **What is this?** Copper Sulfate Large Crystals 25lb Bag 99% Pure by earthworks health llc
- **How much does it cost?** € 360.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/37692500-copper-sulfate-large-crystals-25lb-bag-99-pure)

## Best For

- earthworks health llc enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Quality you can trust with domestic manufacturing standards and fast delivery.
- • **Precision Crystal Size:** 5+ mm crystals designed for controlled, slow dissolution—perfect for hydroponics and algae control.
- • **Ultra-Pure Performance:** Experience unmatched 99.9% purity for reliable, professional-grade results.
- • **Versatile Applications:** From hydroponics to pool maintenance and invasive weed control, one product does it all.
- • **Bulk Supply, Big Impact:** Generous 25lb bag ensures you’re always stocked for large-scale projects or ongoing use.

## Overview

This 25lb bag of Copper Sulfate Large Crystals offers 99.9% purity with 5+ mm slow-dissolving crystals, ideal for hydroponics, algae control, and weed management. Made in the USA, it provides a reliable bulk supply for professional and industrial use.

## Description

Non EPA labeled multi use copper sulfate 99% Purity. High Purity and Quality. EPA registration number: 73385-1 EPA establishment number: 073385-MEX-001

Review: Great - Used to kill Chinese bamboo Also kills knotweed Kills moss on roofs Retaining walls , weeds etc Also use in my pool to maintain readings and removing and keeping away algae Absolutely amazing stuff!!!!
Review: Accurate desciption and fast delivery - Great for our application where slower dissolution of the copper sulfate is a plus.

## Features

- 99.9% Pure
- Bulk
- Great for Hydroponics
- USA Made
- 5+ MM Crystals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01KKUKX4M |
| Best Sellers Rank | #344,518 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #182 in Specialty Metal Raw Materials |
| Date First Available | August 17, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 25 pounds |
| UPC | 756519496871 |

## Product Details

- **Item Form:** Granule
- **Item Weight:** 25 Pounds
- **Manufacturer:** Earthworks Health LLC
- **Package Information:** Bag
- **Percentage assay:** 99.995

## Images

![Copper Sulfate Large Crystals 25lb Bag 99% Pure - Image 1](https://m.media-amazon.com/images/I/41QQqqlpyzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by V***R on June 19, 2023*

Used to kill Chinese bamboo Also kills knotweed Kills moss on roofs Retaining walls , weeds etc Also use in my pool to maintain readings and removing and keeping away algae Absolutely amazing stuff!!!!

### ⭐⭐⭐⭐⭐ Accurate desciption and fast delivery
*by C***N on May 23, 2019*

Great for our application where slower dissolution of the copper sulfate is a plus.

### ⭐⭐⭐⭐ copper
*by J***S on July 3, 2023*

Its copper but it is expensive right now,

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**Shop now:** [https://www.desertcart.de/products/37692500-copper-sulfate-large-crystals-25lb-bag-99-pure](https://www.desertcart.de/products/37692500-copper-sulfate-large-crystals-25lb-bag-99-pure)

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-27*