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When it comes to making sparkling water at home or in a café, choosing the right CO2 cartridge size can make a big difference. The wrong size may not fit your soda maker, or it may run out too quickly, increasing costs and frustration. In this guide, we’ll compare the most common CO2 cartridge sizes—8g, 12g, 16g, and 88g—so you can select the best option for your needs.
Why CO2 Cartridge Size Matters for Soda Makers
Not all soda makers are designed for the same cartridge size.
- Gas Volume: Larger cartridges hold more CO2, which means more sparkling water before replacement.
- Compatibility: Soda makers have specific thread types and capacities.
- Cost Efficiency: Bigger doesn’t always mean better—using an oversized cartridge can be wasteful.
👉 To see compatible CO2 cartridge options for soda makers, check our CO2 cartridge for soda maker product page.
Overview of Common CO2 Cartridge Sizes
| CO2 Cartridge Size | Approx. Gas Volume | Best For | Example Applications |
|---|---|---|---|
| 8g | ~1L sparkling water | Small portable soda makers | iSi, handheld soda siphons |
| 12g | ~1.5–2L | Compact soda machines | Travel soda makers |
| 16g | ~2–3L | Standard home carbonation | Semi-pro soda makers |
| 74g / 88g | 15–20L | Commercial use or modified devices | Restaurant systems, adapters |
Pros and Cons of Each CO2 Cartridge Size
8g CO2 Cartridges
✅ Portable and lightweight
✅ Ideal for small-batch carbonation
❌ Runs out quickly, frequent replacement needed
❌ Not cost-effective for heavy users
12g CO2 Cartridges
✅ More capacity than 8g, still compact
✅ Fits some niche soda maker brands
❌ Limited compatibility with mainstream machines
❌ Availability varies by region
16g CO2 Cartridges
✅ Popular balance of size and capacity
✅ Suitable for most mid-size soda makers
✅ Fewer replacements compared to 8g/12g
❌ May require adapters depending on brand
88g CO2 Cartridges
✅ Long-lasting, ideal for bulk carbonation
✅ Cost-effective for heavy or commercial use
❌ Too large for most household soda makers
❌ Requires special adapters or compatible devices
How to Choose the Right Size for Your Needs
- Occasional Home Use: 8g or 12g cartridges are compact and convenient.
- Frequent Home Use: 16g cartridges offer a better balance of cost and convenience.
- Commercial or Heavy Use: 74g or 88g cartridges reduce downtime and replacement frequency.
- Check Compatibility: Always verify the thread type and soda maker model before purchasing.
CO2 Cartridge Compatibility Tips
- Thread Types: Common threads include 3/8″-24 UNF and 5/8″ BSP. Using the wrong type can cause leaks.
- Adapters: Some users choose adapters to connect larger cartridges (like 88g) to smaller soda makers.
- OEM Options: For distributors and brands, custom cartridges with logo and packaging can increase brand recognition.
📖 For technical details about carbonation and CO2 gas use in beverages, see this reference from Britannica: Carbonated Beverage.
Conclusion: Which CO2 Cartridge Is Best?
If you’re a casual soda drinker, 8g or 12g cartridges are sufficient.
If you want better value and less hassle, 16g cartridges are the sweet spot.
For restaurants, cafés, or frequent users, 74g and 88g cartridges deliver maximum efficiency.
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Looking for high-quality soda maker CO2 cartridges in bulk?
At Alizee Metal, we manufacture a full range of CO2 cartridges, from 8g to 88g, with custom branding and OEM options available.
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