InLine MicroFilter; NSN 4610-01-542-3842. New. 
The MSR Inline Micro Filter connects between your military-style hydration reservoir and drinking tube. 
Filters out bacteria, protozoa and sediment from unknown or untested sources of drinking water. 
Only a part of the UWPS (Individual Water Purification System), and intended to be combined with iodine, chlorine or other similar treatments to remove potentially harmful viruses. 
However, the built-in charcoal filter will remove the taste/odor created by such treatments, greatly increasing the enjoyment of your drinking experience. 
    • Connects between bladder and drinking tube
    • Filters out bacteria, protozoa, protozoal cysts and sediment
    • Granular activated charcoal filter removes bad taste and odors of halogens (such as iodine and chlorine)
    • Compatible with CamelBak® and similar systems
Key Specifications: Material: Military-grade ABS plastic Country of Origin: USA NSN: 4610-01-542-3842 Condition: New, never issued