Most of the chemical treatments talk about 'per liter'. Does this necessarily mean that one can treat 2 or 4 liters at a time? Or should one stick to treating 1 liter a a time. I did a search a found one mention of treating 2 liters at a time.

My reason is this. I have a trip to Peru/Machu Picchu planned for later this year. Apparently the tap water is not safe to drink and plastic bottle pollution is a real problem. So I would like to minimize the number of plastic bottles of water I purchase and bring along or purchase a 1 or 2 gallon jug. I figure I could use tap water, drop in the 4 or 8 (treat 1 or 2 gal) chemical tablets and I should be well stocked with safe water by morning.

I emailed Katadyn but haven't heard back yet.

So does anyone know if 2 gallons can be treated at a time?

Thanks