SteriPEN Water Bottle Pre-Filter

SteriPEN Water Bottle Pre-Filter for Nalgene bottles and other compatible wide-mouth water bottles is an easy to use prefilter when your water source is a little murky. Quickly filter out particulates and debris for cleaner, clearer water before you treat it. Filtering out particulates not only makes the water more pleasant to drink, it's important for using your SteriPEN UV water treatment effectively - so the ultraviolet light can do its job. Filters down to 4 microns. Dual water seals for preventing drinking surface contamination (bottle threads). Also useful for those who use chemical treatments like Aquamira. This pre-filter is perfect for anybody using SteriPEN products or chemical water treatments. Weight: 2.3 oz, 65 g. Height: 1.85 in (47 mm). Diameter: 2.6 in (67 mm). 4 micron durable nylon screen. Reversible cartridge for compact storage. Dual water seals for preventing drinking surface contamination (bottle threads). Not intended for microbial removal