User Review: SteriPEN Classic
Cautions not listed or explained in the instruction booklet.
When you dip your Nalgene bottle into the source water, the threads get contaminated and therefore the cap gets contaminated too, when you put the cap back on.
Any spillage over the top, or water droplets above the water line in the container are suspect contamination.
Micropur (and other products too) recommend after dissolving their product in the water, that you crack open the bottle while holding it upside-down and let a bit of water flow out of the cap. The activated cleaning solution then cleans the cap and threads on the outside where you put your lips. All the water inside the container is cleaned too, not just the water below the water line.
Instruction page #4, Item #5 says:
• “SteriPEN is not intended to disinfect water above the surface of the water in the container, i.e., droplets of water suspended on the side of the container.”
Caution: You can not clean the cap and threads or water droplets above the waterline with the SteriPEN product.