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SteriPEN Adventurer Opti Personal, Handheld UV Water Purifier Review

The Adventurer Opti Water Purifier is widely regarded as one of the most effective handheld ultraviolet water purifiers on the market. This travel-sized water purifying device purifies water in a quick, simple but very effective manner.  It treats water by tampering with the DNA of harmful microorganisms in water such as bacteria and viruses, thereby making them harmless and rendering the water safe for drinking. The Adventurer’s effective water purification ability, coupled with its highly compact nature, makes it perfect for all manners of outdoor adventures such as hunting trips, camping, hiking, etc. It is also a perfect companion when traveling to remote parts of the world where clean drinking water cannot be guaranteed.

SteriPEN Adventurer Opti Personal, Handheld UV Water Purifier with Detail Features

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Effective Purifier

The Adventurer water purifier uses ultraviolet light to destroy over 99.9% of harmful microorganisms such as viruses, bacteria, protozoa, and Giardia in polluted water, thereby making the water safe for drinking.

Reusable and Economical

The Adventurer has the ability to be reused for purifying up to 8,000 liters of water. This means you can use the device for several years. According to SteriPEN, 8,000 liters of water means up to seven years of enjoying safe drinking water.

No Change in Water Taste

Unlike some water purifiers that change the taste of the water that they purify, the Adventurer does not alter the taste of water after it has finished treating it.

Lower Power Indicator

This device, which runs on batteries, comes with a low power indicator that alerts you the moment the batteries become low and need to be changed.

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  • It is very easy to use.
  • Destroys more than 99.9% of harmful microorganisms in dirty water.
  • It is totally safe and doesn’t taste of the water.
  • It comes with a low power indicator.
  • Included in the package are two non-rechargeable batteries, a black case that has a belt loop and instructions on how to operate the device.
  • It has the ability to purify both warm and extremely cold water.
  • It is chemical-free.
  • It is backed by a 3-year manufacturer’s warranty.


  • Sometimes the LED indicator light which lets you know that the device is ready to begin purifying the water or has just completed the water purification process, can sometimes be difficult to see in bright conditions such as during daylight.
  • It does not have the ability to filter out particulate.

SteriPEN Adventurer Opti Personal, Handheld UV Water Purifier Presentation Video

Final Verdict

If you are looking for a handheld water purifier that is not only very effective in treating water but is also easy to use, safe and highly portable, then the Adventurer Opti Water Purifier is one of the best options out there.

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