---
product_id: 718651682
title: "Ultra-Fine Lab Grade Gypsum for Mushroom Substrates, Brewing, Tofu - No Additives, 97% Calcium Sulfate 22.5% Calcium (Ca) 18% Sulfur (S) - Packaged in HEPA Enclosure"
brand: "mycology basics"
price: "208.98 DT"
currency: TND
in_stock: true
category: "Mycology Basics"
url: https://www.desertcart.tn/products/718651682-ultra-fine-lab-grade-gypsum-for-mushroom-substrates-brewing-tofu
store_origin: TN
region: Tunisia
---

# 22.5% Calcium & 18% Sulfur for optimal growth HEPA enclosure for contamination-free packaging 97% pure Calcium Sulfate Ultra-Fine Lab Grade Gypsum for Mushroom Substrates, Brewing, Tofu - No Additives, 97% Calcium Sulfate 22.5% Calcium (Ca) 18% Sulfur (S) - Packaged in HEPA Enclosure

**Brand:** mycology basics
**Price:** 208.98 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your grow game with lab-grade purity and contamination-free confidence!

## Quick Answers

- **What is this?** Ultra-Fine Lab Grade Gypsum for Mushroom Substrates, Brewing, Tofu - No Additives, 97% Calcium Sulfate 22.5% Calcium (Ca) 18% Sulfur (S) - Packaged in HEPA Enclosure by mycology basics
- **How much does it cost?** 208.98 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/718651682-ultra-fine-lab-grade-gypsum-for-mushroom-substrates-brewing-tofu)

## Best For

- mycology basics enthusiasts

## Why This Product

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

## Key Features

- • **Lab-Grade Purity:** Ultra-fine 97% Calcium Sulfate powder ensures flawless substrate integration
- • **Resealable Freshness:** Professional resealable bag keeps powder fine and ready for your next project
- • **Boosts Growth & Yield:** Rich calcium and sulfur content enhances soil structure and crop productivity
- • **Multi-Use Versatility:** Perfect for mushroom substrates, brewing, and tofu thickening—one product, endless possibilities
- • **Contamination-Proof Packaging:** Sealed in a humidity-controlled HEPA enclosure to keep your cultures pristine

## Overview

Myco Basics Ultra-Fine Lab Grade Gypsum is a 100% pure, finely milled calcium sulfate powder (97% purity) with 22.5% calcium and 18% sulfur, packaged in a HEPA-filtered enclosure to prevent contamination. Ideal for mushroom substrates, brewing, and tofu preparation, it enhances soil structure and crop yields while maintaining freshness in a resealable bag.

## Description

Myco Basics sets the industry standard for high quality, organicically & ethically source Mycology Products. Our lab-grade gypsum is 100% pure, without clumps, lumps or granulation that makes it hard to break up and use in substrates or grainspawn. Our Gypsum is also packaged in a HEPA filtrated enclosure, meaning it will not contam your mushroom grow.

## Features

- Included: Myco Basics Gypsum is the highest grade of organic gypsum available, containing 97% Calcium Sulfate Dihydrate, 22.5% calcium & 18% sulfur. Our Gypsum is 100% water soluble and a fine powder, without residue or excessive impurities
- Ideal for Mushroom Substrates: Our Gypsum is packaged in a humidity controlled HEPA enclosure, meaning chances of contamination, clumping & other issues are greatly reduced
- Improves Soil Structure: Organic Garden Gypsum has been demonstrated to increase crop yields drastically, and can, when used with Garden Lime, reduce nutrient runoff and increase soil food web quality
- Resealable Bag: Our Gypsum is professionally packaged and sealed, meaning the Gypsum will remain as a fine powder and can be resealed for later use
- Use with Brewing or Tofu: Our gypsum is great for use with brewing, as a Tofu thickener, or in any number of food related recipes that require a thickener

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BZJQNDHN |
| Brand Name | Mycology Basics |
| Coverage | 1000 |
| Customer Reviews | 4.7 4.7 out of 5 stars (262) |
| Global Trade Identification Number | 00850037130221 |
| Included Components | Resealable bag, Organic 100% Pure Gypsum |
| Item Form | Powder |
| Manufacturer | Mycology Basics |
| Model Number | B0BZJQNDHN |
| Number of Items | 1 |
| Part Number | MycoBasics-Gyp1 |
| Specific Uses For Product | Organic |
| Target Species | mushrooms |
| Unit Count | 20 Ounce |

## Product Details

- **Brand:** Mycology Basics
- **Global Trade Identification Number:** 00850037130221
- **Item form:** Powder
- **Number of Packs:** 1
- **Specific uses for product:** Organic

## Images

![Ultra-Fine Lab Grade Gypsum for Mushroom Substrates, Brewing, Tofu - No Additives, 97% Calcium Sulfate 22.5% Calcium (Ca) 18% Sulfur (S) - Packaged in HEPA Enclosure - Image 1](https://m.media-amazon.com/images/I/51gAvXElP-L.jpg)

## Questions & Answers

**Q: How much do I mix in 1 gallon to water into the soil in organic agriculture applications?**
A: For soil drench applications we recommend 25 grams per gallon, and for foliar spray applications we recommend 7 grams dissolved in warm water per gallon.
Thanks,
John

**Q: Can this be used in foliar spray applications / organic agriculture spray?  If so, what is amount to mix in 1 gal?**
A: Absolutely, it will work very well as a foliar spray. You will want to mix in 1/2 a tsp or 3.0 grams per gallon of water - we recommend using non-chlorinated water where available.
Thanks,
John

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-24*