---
product_id: 130664478
title: "Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16\" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew"
price: "AR$70307"
currency: ARS
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.ar/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5
store_origin: AR
region: Argentina
---

# 2 micron diffusion stone for ultra-fine CO2 bubbles Universal fit for most PET bottles & gas disconnects Precision-machined carbonation cap Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew

**Price:** AR$70307
**Availability:** ✅ In Stock

## Summary

> 🍺 Elevate Your Homebrew Game with Microbubble Magic!

## Quick Answers

- **What is this?** Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew
- **How much does it cost?** AR$70307 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/130664478-carbonation-cap-diffusion-air-stone-homebrew-carbonating-kits-including-5)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Compatibility:** Seamlessly fits most PET bottles and Grey Gas Ball Lock Disconnects—perfect for any homebrew setup.
- • **All-in-One Carbonation Kit:** Includes rubber rings, diffusion stone, and 2-inch beer line for a ready-to-use, mess-free carbonation experience.
- • **Ultra-Fine Bubble Diffusion:** 2 micron diffusion stone ensures rapid CO2 absorption with microbubbles, elevating your brew’s texture and taste.
- • **Effortless Pro-Level Carbonation:** Inject CO2 with precision using the machined 5/16" carbonation cap for consistent fizz every time.
- • **Durability Meets Quality Assurance:** Crafted to international standards with a 45-day money-back guarantee—because your brew deserves the best.

## Overview

The Carbonation Cap Diffusion Air Stone kit is a precision-engineered homebrew accessory designed to carbonate various beverages including beer, soda, and water. Featuring a 5/16" machined carbonation cap, a 2 micron diffusion stone for ultra-fine CO2 bubbles, and a 2-inch beer line, it fits most PET bottles and Grey Gas Ball Lock Disconnects. This all-in-one kit accelerates carbonation, enhances flavor, and is backed by a 45-day money-back guarantee, making it an essential upgrade for any serious homebrewer or sparkling water enthusiast.

## Description

CARBONATION CAP WITH DIFFUSION STONE FEATURES: Package: Carbonation Cap with 5/16" Barb, 2 pcs Rubber Ring, 2 Micron Diffusion Stone, 2 inch Beer Line; Connect: Unique Machined the Carbonation Cap, can fit Grey Gas Ball Lock Disconnect and the Barb End Connect Plastic Tubing and Diffusion Stone; Use: Carbonation Cap can Carbonate Various Beverages, including Soda, Beer, Juice, Water or Clean Beer Line; HOW TO USE: Leave around 2 or 3" of Space in the Bottle, Squeeze out all of the Air, then Tighten the Carbonation Cap on the Bottle; Connect the Gas Ball Lock Disconnect to the Carbonation Adapter and Start inject CO2 to the PET Bottles; Turn on the CO2 Regulator, Shake the Bottle Vigorously until reach a desired Carbonation Level; In order to CO2 can be absorbed much faster, Please Make Sure the Beer, Water, Juice, Soda is very Cold; The Carbonation Cap comply with international Quality Standards, it can attached to most Plastic Bottles; If you attend Parties, Picnics, Camping and so on, this Carbonation Cap is a best Choice to carbonate different Beverages; Quality Guarantee: Any Defective for Carbonation Cap, Money Back or Replacement free.

Review: Nice simple all-in-one kit for the bottle end of home carbonation - As others have mentioned, the tube fit is VERY tight, and you might have to work it back and forth to get it on. I have seen zero leaks so far, and it does really help my carbonation setup (simple tank and regulator) get a lot more CO2 into the water than just shaking the bottle alone. It's a bit harder to get the included male quick-release to pair up with the female one I've got for my setup, but it's not that much more difficult. I was quite careful to use gloves when touching the "stone" since they warn you about hand oil. It works pretty well and it's fairly low cost so it doesn't add much to my setup's total cost.
Review: Stainless steel, fits carbonated soda bottles perfectly - I carbonate my own spring water. I probably drink a liter of sparkling water each day and this stainless carbonation cap fits any standard plastic soda bottle such as a one liter or two liter soda bottle. It would also fit a smaller bottle but no point in that for me. I fill my bottles with flat spring water because it tastes better than what I get from my tap, not to mention all the impurities in my local water. After filling most of the bottle but leaving a little space in the top, I close it up and attach to my CO2 bottle regulated at 45 PSI. I do release the air after letting in some CO2, then seal completely, pressurize, and shake it up to absorb all the CO2. A few seconds later, I've got carbonated spring water. This is cheaper than paying a dollar per liter but it also means I won't throw away 350 liter plastic bottles in the trash each year. desertcart does sell a plastic version of this, don't waste your time. they are about the same price and this stainless cap is indestructible and looks cool. This one comes with a flexible tube and diffusion stone that releases the CO2 into the water with very tiny bubbles that absorb faster than just dumping in the gas. It's not totally necessary, but does seem to work well. The complete kit is very high quality and does exactly what it is designed to do.

## Features

- Home Brew Carbonating Kit, Including Carbonation Cap with 5/16" Barb, 2 pcs Rubber Ring, 2 Micron Diffusion Stone, 2 inch Beer Line;
- Unique Machined the Carbonation Cap, can fit Grey Gas Ball Lock Disconnect and the Barb End Connect Plastic Tubing and Diffusion Stone;
- The Carbonation Cap comply with international Quality Standards, it can attached to most PET Bottles;
- The Carbonation Cap can Carbonate Various Beverages, including Soda, Beer, Juice, Water or Clean Beer Line;
- Quality Guarantee: Any Defective for Homebrew Carbonating Kit, Backed by 45 days Money-Back.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #516,905 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #1,061 in Beer Brewing Kegs & Kegging |
| Customer Reviews | 4.1 out of 5 stars 135 Reviews |

## Images

![Carbonation Cap Diffusion Air Stone - Homebrew Carbonating Kits Including 5/16" Carbonation Cap, 2 Micron Diffusion Stone, 2 inch Beer Line, used for Soda, Water, Beer Brew - Image 1](https://m.media-amazon.com/images/I/51SUkcBrAmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice simple all-in-one kit for the bottle end of home carbonation
*by C***W on June 27, 2025*

As others have mentioned, the tube fit is VERY tight, and you might have to work it back and forth to get it on. I have seen zero leaks so far, and it does really help my carbonation setup (simple tank and regulator) get a lot more CO2 into the water than just shaking the bottle alone. It's a bit harder to get the included male quick-release to pair up with the female one I've got for my setup, but it's not that much more difficult. I was quite careful to use gloves when touching the "stone" since they warn you about hand oil. It works pretty well and it's fairly low cost so it doesn't add much to my setup's total cost.

### ⭐⭐⭐⭐⭐ Stainless steel, fits carbonated soda bottles perfectly
*by D***Y on April 14, 2022*

I carbonate my own spring water. I probably drink a liter of sparkling water each day and this stainless carbonation cap fits any standard plastic soda bottle such as a one liter or two liter soda bottle. It would also fit a smaller bottle but no point in that for me. I fill my bottles with flat spring water because it tastes better than what I get from my tap, not to mention all the impurities in my local water. After filling most of the bottle but leaving a little space in the top, I close it up and attach to my CO2 bottle regulated at 45 PSI. I do release the air after letting in some CO2, then seal completely, pressurize, and shake it up to absorb all the CO2. A few seconds later, I've got carbonated spring water. This is cheaper than paying a dollar per liter but it also means I won't throw away 350 liter plastic bottles in the trash each year. Amazon does sell a plastic version of this, don't waste your time. they are about the same price and this stainless cap is indestructible and looks cool. This one comes with a flexible tube and diffusion stone that releases the CO2 into the water with very tiny bubbles that absorb faster than just dumping in the gas. It's not totally necessary, but does seem to work well. The complete kit is very high quality and does exactly what it is designed to do.

### ⭐⭐⭐⭐⭐ Great for home carbonation, and the tubing is fine
*by W***D on November 15, 2020*

Works great on our DIY home carbonated water system. With a hose, tank, and pressure regulator, takes about 30-60 seconds to make a 1 liter bottle of water if you shake it. Have had it for 3 weeks and have made about 3 liters per day. Several reviews report the tube is the wrong size, I disagree. Given the reviews I didn't even try to put it on out of the box, I heated up some water, placed the tube end in it and let it sit for a minute or two to soften it, then pushed it on by hand and with some pliers. The plastic is thick, wasn't worried about damaging anything. it's a great tight fit on both ends and my preference. You wont be able to pull it off though, I cut it with a utility knife because I wanted it shorter, put it in some hot water and reattached. Works for me

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-19*