How long are the tablets good for.

According to the manufacturers website there is no expiration date and it is not a 4 year shelf life. It states on this FAQ for these tablets... Does Potable Aqua® have an expiration date? No, Potable Aqua is an EPA registered product that does not require an EXP date. The shelf life of Potable Aqua is dependent on storage conditions. Product should be stored in a cool, dry place, in adherence with the label’s storage guidelines to maximize product shelf life. When reviewing your product, as a general rule tablets that are grayish/brown in color are good and tablets that are yellowish/green should be replaced. Bottles that have been opened should be replaced for the next season. The number printed on the side of each bottle is the manufacturer’s lot code, not an expiration date. The lot code can be used to identify the date of manufacture of that bottle of PA. The lot code is comprised of month, year, and batch number, such as 51507. This bottle was made in May of 2015, and was the 7th batch There is tons of bad information from both this seller that answered this question and reviewers here on amazon. Research products yourself before buying.

Is this an option if you don't want to boil?

Yes. I usually just store these in case the SHTF, but on a recent trip to S America where you ever drink fron the tap, we'd buy water in those big 20 gallon bottles ( still not safe). Then for my 2 yr old & me we'd drop one of each of these pills in a 2 liter Brita filter. No Montezuma's revenge for first time ever. Always better to boil, but not alway available or practable.

ASIN	B01GPK4LVW
Best Sellers Rank	#269 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Camping Chemical Water Treaters
Brand Name	potable aqua
Capacity	50 Quarts
Container Type	Packaging
Customer Reviews	4.7 4.7 out of 5 stars (23,020)
Global Trade Identification Number	00368093030329
Included Components	2, 50 count Potable Aqua Bottles
Installation Type	Personal Container
Item Dimensions L x W x H	9"L x 1"W x 6"H
Item Type Name	Chemical Water Purification Tablets
Item Weight	0.09 Pounds
Manufacturer	Potable Aqua
Material Type	Glass, Metal Cap
Model Name	Potable Aqua Water Purification Germicidal Tablets - Twin Pack Fast Pack, no outer packaging
Model Number	3032
Other Special Features of the Product	Lightweight
Power Source	Manual
Product Shelf Life	4 Years
Purification Method	Alkaline
Supported Water TDS Level Maximum (PPM)	1000
UPC	885344216504 368093030329
Unit Count	100.0 Count

Water Purification Tablets, Portable and Effective Water Purification Solution for Camping, Hiking, Emergencies, Natural Disasters and International Travel, Two 50ct Bottles, Blue

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