Does this filter work with tannin in the water? Also, how about brackish water?

Sawyer's claim for the filter is that it removes 99.99999% of all harmful bacteria and 99.9999% of protozoa. Viruses are not included nor are other impurities mentioned. I have written to Sawyer to ask about tannin and brackish water and will reply again once I receive a return message. I'm not sure when that will be, but hope it will be soon.Keri-LynnFour Seasons Survival

What is the shelf life for this? Used and properly cleaned or unopened.

This filter is advertised as up to 100,000 gallons by Sawyer. When you begin to notice a decrease in flow, I recommend back flushing with potable water using the included syringe. I normally keep an ounce or two of 90% isopropyl alcohol to sanitize the drinking tip and any tubes I may use when setting up different systems. After use and before long term storage (especially if you filtered a lot of biologically questionable water), it is recommended to run a sanitizing solution of bleach/water (1tbsp plain, unscented bleach to 1 gallon water) through the filter then rinse very well with potable water, shake out vigorously and allow to air dry for several days before capping and placing into storage. An unopened filter should have indefinite shelf life unless it is subjected to extreme temperatures, hot or cold.

What's the total weight of the full system? (Including the filter, tube, syringe, and pouch) It seems the listed 2 oz refers to the filter alone.

You are right about the 2 ounces being the filter only-that is what Sawyer advertises. The entire unit, inside the packaging is 4.8 ounces. I cannot take it out to weigh the items outside the packaging as I would need to destroy the container to get them out. I am guessing the plastic covering weighs less than an ounce so the entire unit probably weighs about 4 ounces.

Has the Sawyer Mini gone through End of Life testing in laboratories to ensure that it will ACTUALLY filter 100,000 gallons of water?

Only thing I can find is on the sawyer website is the lifetime warranty so if you read it the will fix/replace the filter for life as long as you dont modify the filter in anyway or open the housing or run juice or drink mixes thru it they will replace it the 100,000 gallon guarantee is to tell you you will have it for life you will lose it beforeit breaks I hope I was of help you can find all the tech data sheets on there website

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Description

💧 Stay hydrated, stay unstoppable—filter your way to fearless adventures!

UNMATCHED PURITY - Removes 99.99999% of bacteria, 99.9999% of protozoa, and 100% of microplastics—drink with total confidence.
ENDURANCE CHAMPION - Rated to filter up to 100,000 gallons—your reliable companion for years of adventures.
READY FOR ANYTHING - Includes reusable pouch, straw, and cleaning plunger—gear up for hiking, travel, or emergency prep with ease.
VERSATILE HYDRATION - Connects seamlessly to bottles, hydration packs, or use the straw to sip directly from any water source.
POCKET SIZED POWERHOUSE - Fits in your palm, weighs just 2 ounces—ultimate portability for the on-the-go pro.

The SawyerProducts Mini Water Filtration System is a compact, ultra-lightweight filter that removes nearly all bacteria, protozoa, and microplastics from water. Designed for outdoor enthusiasts and emergency preparedness, it fits in the palm of your hand, attaches to multiple hydration options, and is rated to filter up to 100,000 gallons, ensuring safe drinking water wherever you go.

Specifications

Brand	Sawyer
Special Feature	Protects against 99.999999% of bacteria (including Salmonella, Cholera, and E. coli), 99.9999% of protozoa (such as Giardia and Cryptosporidium), 100% of microplastics
Product Dimensions	4"L x 3"W x 8"H
Package Information	Pouch
Installation Type	Portable/Countertop
Power Source	Manual Operation
Item Weight	100 Grams
Model Name	MINI Water Filter
Maximum Flow Rate	1E+5 Gallons Per Minute
UPC	050716001280
Global Trade Identification Number	00050716001280
Manufacturer	Sawyer Products
Item Package Dimensions L x W x H	13.62 x 9.61 x 1.5 inches
Package Weight	0.16 Kilograms
Item Dimensions LxWxH	4 x 3 x 8 inches
Brand Name	Sawyer
Country of Origin	United States
Warranty Description	Rated up to 100,000 gallons by manufacturer
Color	Blue
Suggested Users	unisex-adult
Number of Items	1
Part Number	SP128
Model Year	2015
Style	Filter w/ Pouches
Size	1-Pack
Sport Type	Boating, Camping & Hiking, Fishing, Outdoor Lifestyle, Training

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