Capsules

• How do I know if a Carbon Capsule is empty?
• Where/how should I store my Carbon Capsules?
• I got a new pack of Capsules, but they look different from my first pack. Why?
• There's something wrong with my Carbon Capsules — what do I do?
• How many times are capsules reused by Aerflo before they're retired?
• What material are the Carbon Capsule holders made out of?