DayCap Replacement Filter

Description | 

Never miss a sip—this DayCap Replacement Filter brings your in-bottle filter back to life. Ready to twist in place, it features a high-flow hollow-fiber core that ensures drinking speeds of up to 1 L per minute while being small enough to replace anytime. Designed with real-world riders in mind, it’s tested to meet stringent EPA & NSF protocols for removing 99.9999% of bacteria and 99.9% of protozoa, including Giardia and E. coli—just shake to clean and stay moving forward.

Features & Specs |

• Flow Rate: Up to 1 L per minute (fast as an unfiltered sip)
• Filtration Performance: Filters 99.9999% bacteria and 99.9% protozoa—EPA & NSF P231 tested
• Compatibility: Twist-in replacement for Platypus DayCap in-bottle filters; no tools required
• Filter Lifespan: Up to 1,000 L of water depending on source conditions
• Cleaning: Shake to clean and restore flow
• Weight: Approximately 1 oz (27 g)
• Ideal For: Day hikes, minimalist packing, commuting, and travel with water bottles
• Made In: USA-built hollow-fiber technology

Usage Tips | 

• Install with a simple twist—you’re ready to filter instantly
• Shake your bottle periodically in the field to dislodge debris and keep flow fast
• Replace after filtering ~1,000 L or when flow noticeably drops
• Pair with a sturdy wide-mouth bottle (Nalgene/Hydro Flask/Yeti Yonder) and your ride is hydration-ready