This was purchased as a christmas gift and hasn't been used yet, but it was well received and the product has a good reputation.

This was purchased as a christmas gift and hasn't been used yet, but it was well received and the product has a good reputation.  Read Less

There's nothing wrong with this product, it does exactly what it's designed for and does it well.

There's nothing wrong with this product, it does exactly what it's designed for and does it well.  Read Less

You just stick the funnel in the mouth of the bottle, pour the water thru, then sterilize it with the pen.

You just stick the funnel in the mouth of the bottle, pour the water thru, then sterilize it with the pen.  Read Less

Also, your container needs to be full enough for the water to make contact with the 2 electrodes on the steripen while its in t...  Read More

Also, your container needs to be full enough for the water to make contact with the 2 electrodes on the steripen while its in the filter housing.  Read Less

I just put it up to my lips and blow hard (and fast) and it's clean.

I just put it up to my lips and blow hard (and fast) and it's clean.  Read Less

Also, the packaging has been upgraded to show that the filter cartridge screen is indeed 40 microns.

Also, the packaging has been upgraded to show that the filter cartridge screen is indeed 40 microns.  Read Less

Remove the vented cartridge to insert the steripen.

Remove the vented cartridge to insert the steripen.  Read Less

I use it as a pre-filter for the sawyer mini when filling the bags and it works perfect for that.

I use it as a pre-filter for the sawyer mini when filling the bags and it works perfect for that.  Read Less

In daylight or with a non see-through container, this filter housing and the steripen, you won't be seeing what's going on.

In daylight or with a non see-through container, this filter housing and the steripen, you won't be seeing what's going on.  Read Less

Revision: make sure you sterilize your water first (with a steripen) to prevent ingesting contaminated water while blowing out ...  Read More

Revision: make sure you sterilize your water first (with a steripen) to prevent ingesting contaminated water while blowing out filter or use clean water to backflush,note: over the years, i've switched to a katadyn (https://www.  Read Less