Photo Credits

Basecamp Ama Dablam

A 25-second exposure in Ama Dablam basecamp, Nepal. A steep ascent, the peak is 5,563m (18,251 ft).

© Cristian Tzecu :

Water Purification with GSE?

GSEOver the past few years I’ve heard an increasing number of people using grapefruit seed extract (GSE) as a form of chemical water “purification.”  I was told it was basically a tincture made from grapefruit seeds, just add a few drops to a liter, shake it up, wait 20 minutes and drink.  It seems that GSE is not a tincture and should not be used as a reliable form of water purification. Decide for yourself:

Posted by

Ryan Van Luit

on 4/1/10
Field Safety


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