Platypus DayCap In-Bottle Filter – Water Filter for Bottles

Want safe drinking water from almost any bottle while out and about, without lugging heavy equipment? The Platypus DayCap In-Bottle Filter is an ultralight water filter that you simply screw onto a standard bottle. For hikers, runners, cyclists and travellers, clean drinking water on the move is essential, but you do not want to fill your entire backpack for it. With the Platypus DayCap, you turn an ordinary bottle into a personal filtration system, so you can quickly and safely refill your bottle at a stream, tap or water source. That way you drink worry-free, wherever your adventure takes you.

The Platypus DayCap In-Bottle Filter removes 99.9999% of bacteria, such as E. coli, and 99.9% of protozoa, such as Giardia, thanks to a filter membrane with a pore size of 0.2 microns. That protects you against the most common biological contaminants in freshwater sources. The filter lasts for roughly 1500 litres under normal use, which is enough for hundreds of trips and day outings. Because you need no chemicals, batteries or power, the DayCap is a reliable and low-maintenance solution for on the move.

At a weight of just 25 grams, you barely notice the Platypus DayCap in your backpack, pocket or running vest, so you can always take it along. The filter fits most standard bottles, including an ordinary 0.5-litre PET bottle, and is compatible with popular drinking bottles such as the Nalgene widemouth, Hydro Flask Wide Mouth and Yeti Yonder. That means you do not have to buy a special bottle, but simply use the bottle you already have. Just screw it on and you are ready to drink.

Planning a day hike, training for a running or cycling trip or building an emergency kit? Then the Platypus DayCap In-Bottle Filter is a clever, lightweight addition to your gear. You drink safely with it while travelling to areas with unreliable tap water and always have reliable water purification at hand in emergencies. Choose the Platypus DayCap In-Bottle Filter and drink with confidence from almost any bottle while on the move.

Key Features

• Removes 99.9999% of bacteria, such as E. coli
• Removes 99.9% of protozoa, such as Giardia
• Filter membrane with a pore size of 0.2 microns
• Fits most standard bottles, including a 0.5-litre PET bottle
• Compatible with Nalgene widemouth, Hydro Flask Wide Mouth and Yeti Yonder
• Long lifespan: good for roughly 1500 litres of water
• Ultralight at just 25 grams
• No chemicals, batteries or power required
• Ideal for day hikes, training, travel and in an emergency kit

Product Specifications

• Brand: Platypus
• Model: DayCap In-Bottle Filter
• Weight: 25 grams
• Capacity: approximately 1500 litres
• Filter performance: 0.2 microns
• Removes: 99.9999% of bacteria (such as E. coli) and 99.9% of protozoa (such as Giardia)
• Compatibility: fits most standard bottles, including Nalgene widemouth, Hydro Flask Wide Mouth and Yeti Yonder
• EAN: 0040818138786

Frequently Asked Questions (FAQ)

How does the Platypus DayCap In-Bottle Filter work?
You screw the DayCap onto a compatible bottle, fill the bottle with water from a stream, tap or other source, and then drink through the filter. The 0.2 micron filter membrane blocks bacteria and protozoa, so you can drink safely. No chemicals, batteries or power are involved.

Which contaminants does this filter remove?
The DayCap removes 99.9999% of bacteria, such as E. coli, and 99.9% of protozoa, such as Giardia. That protects you against the most common biological contaminants in freshwater sources. The filter is intended for bacteria and protozoa; no claims are made regarding viruses.

Which bottles does the DayCap fit?
The DayCap fits most standard bottles, including an ordinary 0.5-litre PET bottle. In addition, the filter is specifically compatible with popular drinking bottles such as the Nalgene widemouth, Hydro Flask Wide Mouth and Yeti Yonder. That means you do not have to buy a special bottle, but use the bottle you already have.

How much water can I purify with this filter?
The filter lasts for roughly 1500 litres under normal use. For most hikers, runners and travellers, that means hundreds of trips and day outings with a single filter. That way you have reliable water purification at hand for a long time without replacement parts.

Do I need chemicals, batteries or power?
No, the Platypus DayCap works entirely mechanically via the filter membrane and needs no chemicals, batteries or power. You simply drink through the filter after refilling the bottle. That makes it a low-maintenance and reliable solution for on the move.

Is the DayCap suitable for an emergency kit?
Absolutely, at a weight of just 25 grams and with a long lifespan, the DayCap is ideal for an emergency kit, bug-out bag or travel bag. You always have compact water purification at hand for situations where clean drinking water cannot be taken for granted. Store the filter dry and clean until you need it.

How do I maintain the filter?
Flush the filter with the cleanest water available after use and let it dry thoroughly before storing it. Store the DayCap in a dry, clean place to keep the membrane in good condition. Replace the filter once the flow noticeably decreases or the capacity of roughly 1500 litres is reached.

Who is the Platypus DayCap suitable for?
The DayCap is ideal for hikers, runners, cyclists and travellers who want to drink safely on the move without heavy equipment. Thanks to its low weight and broad compatibility, it is also suitable for day outings, training and as part of an emergency kit. In short, for anyone who wants safe drinking water within reach at all times.

How quickly will my order be shipped?
Orders placed on business days before 5:00 PM are shipped the same day. That means your water filter arrives quickly and you can head out without delay. Handy when you want to complete your kit just before a trip or journey.