Does it really take four hours? That seems like a long time to wait on drinking water while hiking.

It takes 4 hours for it to kill everything, but........... Things like bacteria and viruses are more fragile than other organisms that have an outer "shell". The 4 hour recommendation is so that these tougher organisms are killed as well as the bacteria and viruses. We always filter our water first (MSR Miniworks) which removes 99.99% of bacteria and just leaves any potential virus behind which is why we also use these tablets (many would argue that this is overkill, BTW). Viruses are killed in 20-30 minutes. So---our method is to filter the water first, then drop a tablet in and wait about 20 minutes. (additional recommendation: don't leave your water bottle sitting in direct sunlight while the tablet is working)

Expiration date as of 02/20/2020?

Follow expiration date. Toss it, at or after expiration date. I would NOT use it. In this case, where I am, it is 02/20/2020...so toss it.

Are these tablets individually wrapped or all in one jar?

These tablets are individually wrapped.

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Katadyn Micropur MP1 Water Purification Tablets, 30 Count

Katadyn Micropur MP1 Water Purification Tablets, 30 Count

Product ID: 1792690

Details

Brand
Katadyn
Capacity
1 liters
Installation Type
Personal
Item Weight
25.54 g
Material
Chlorine
Model Name
Micropur 30

⏳15 min fast-acting in clear water

💧1 tablet purifies 1L water

🛡️5-year shelf life, sealed tablets

Description

💧 Stay hydrated, stay ahead—purify anywhere, anytime!

RAPID RELIABLE - Just 15 minutes to clean water in clear conditions—perfect for quick hydration needs.
NO FUSS NO FILTER - No pump or bulky filter required—just drop a tablet and hydrate with confidence.
TRUSTED SINCE 1928 - Katadyn’s century-long expertise guarantees water safety for hikers, travelers, and survivalists alike.
LONG LASTING READINESS - Individually sealed tablets with a 5-year shelf life keep you prepared for every trip or emergency.
PURE HYDRATION ON THE GO - Chlorine dioxide formula ensures safe, great-tasting water anywhere your adventure leads.

Katadyn Micropur MP1 Water Purification Tablets use chlorine dioxide—the same trusted chemical in municipal water plants—to deliver safe, clean, and great-tasting drinking water. Each tablet treats 1 liter of water in as little as 15 minutes, with a shelf life of 5 years thanks to individual sealing. Ideal for camping, hiking, travel, and emergency preparedness, these lightweight tablets require no pump or filter, making them the ultimate portable water purifier for solo adventurers and small groups.

Specifications

ASIN	B0007U017U
Best Sellers Rank	#191,045 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #50 in Camping & Hiking Water Purifiers
Brand	Katadyn
Brand Name	Katadyn
Capacity	1 liters
Container Type	Bottle
Customer Reviews	4.7 out of 5 stars 505 Reviews
Global Trade Identification Number	00604375136922
Installation Type	Personal Container
Item Dimensions L x W x H	1"L x 1"W x 1"H
Item Highlight	Chlorine Dioxide Drinking Water Treatment, For Camping, Backpacking, International Travel & Emergency Preparedness
Item Weight	25.54 g
LowerTemperature Range	39 °F
Manufacturer	Katadyn
Material	Chlorine Dioxide
Material Type	Chlorine Dioxide
Model Name	Micropur 30 Pack
Model Number	8013692
Number of Items	1
Number of Packs	30
Other Special Features of the Product	Chlorine Dioxide, No Pump or Filter Required, 5-Year Shelf Life, Individually Sealed Tablets, Trusted Field Treatment
Package Information	Bottle
Part Number	8013692
Product Dimensions	1"L x 1"W x 1"H
Product Shelf Life	5 years
Purification Method	Chlorine Dioxide
Special Feature	Chlorine Dioxide, No Pump or Filter Required, 5-Year Shelf Life, Individually Sealed Tablets, Trusted Field Treatment Special Feature Chlorine Dioxide, No Pump or Filter Required, 5-Year Shelf Life, Individually Sealed Tablets, Trusted Field Treatment See more
Supported Water TDS Level Maximum (PPM)	1000
UPC	604375136922
Unit Count	1 count
Upper Temperature Rating	39 °F

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