ISTM Member Advantage Program


SteriPEN Freedom

SteriPEN Freedom

ISTM Member Advantage Program

Use link below to order if shipping to a US address, or contact to order outside the US.

The most popular model for international travel
is now available at a special price for ISTM members!

SteriPEN, the world’s leading manufacturer of handheld UV water purifiers, and The International Society of Travel Medicine (ISTM) have partnered to make SteriPEN Freedom available to ISTM Members for for 25% off the US suggested retail price of $99.95. As an ISTM member, you can receive SteriPEN Freedom for just $74.96 (plus sales taxes where applicable).

American Alpine Institute Guides' Choice Award
2014 AAI Guides’ Choice Award.

SteriPEN Freedom, the world’s smallest handheld UV water purifier, is perfect for travelers visiting areas with questionable water quality. It is is designed to be carried easily in a shirt pocket or purse and comfortably used in even fine restaurants. In just 48 seconds with Freedom you can turn questionable water into safe drinking water and its internal, USB rechargeable battery lasts for 40 treatments on one charge.

ISTM Member Advantage Program



Learn more about SteriPEN Freedom


 To take advantage of this special offer for ISTM members:

Shipping to a US address?

Click here and enter the ISTM discount code during checkout.

Shipping to an address outside the US?

Please email the promotion code and your shipping address to A sales representative will contact you wth payment instructions.


SteriPEN is the original handheld UV water purifier

SteriPEN Awards View All SteriPEN Awards

SteriPEN consistently receives industry awards recognizing the effectiveness and convenience of handheld UV water purification.
 Time Magazine Award 

Outside Magazine 


SteriPEN Testimonials View All Testimonials

John Mathe
 It gives me drinkable water in under two minutes, I can use it on the move, and it fits anywhere!
John Mathe Author - In the Footsteps of Greatness
Don Fletcher
In a survival situation clean drinking water is one of the main priorities, and the Adventurer Opti is great to ensure that what you are drinking is safe.
Don Fletcher Bear Grylls Survival Academy
No chemicals. Charge the battery before using and it’s good to go!
Donna Blogger - Chasing Clean Air


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