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SteriPEN

®

 User’s Guide

 

Instructions for Using SteriPEN

®

Thank you for selecting SteriPEN

® 

Freedom. Years of careful 

research, development and testing have gone into the creation of 
this innovative product. SteriPEN

®

 is a handheld ultraviolet (uv) 

light water purifier. This device will provide 8,000 0.5L (16 oz.) 
treatments.

How Do SteriPEN

®

 Purifiers Work?

SteriPEN

®

 purifiers use shortwave germicidal UV light to disinfect 

water. This range of UV light disrupts the DNA of microbes in 
seconds. Without intact DNA, microbes cannot reproduce to 
make you sick. SteriPEN purifiers destroy over 99.9% of bacteria, 
viruses and protozoa (giardia & cryptosporidium). Complete test 
results at www.steripen.com/micro-biological-testing.

Usage Situations

SteriPEN

®

 Freedom will destroy microbes whether you are 

drawing water from a stream while camping, traveling, or using 
in developing countries where the water supply is not safe. 
It’s also great insurance in emergencies when water supply is 
disrupted. Even bottled water in many countries comes from 
unknown and unregulated sources. Use on any source of fresh 
water in any country.

Quick Start Guide

Before Use 

•  Charge battery: SteriPEN

®

 Freedom is powered by a sealed 

lithium polymer rechargeable battery, not user accessible. 
When fully charged, the device delivers up to 40 0.5L (16 oz.) 
treatments. Charge your SteriPEN

®

 with the included USB cable 

using either wall power via the included AC Adapter (100 to 
240 V with US prongs) or the USB port on your computer. The 
USB cable will also work with any USB compatible car charger 
(not included) or solar charger (not included). 

•  SteriPEN

®

 will fully charge via AC power in about 2 hours; up 

to 4 hours via USB connector to PC. Steady red LED charging 
indicator will turn steady green when fully charged. The USB 
connector is protected by a soft black cover; pull gently to 
access connector for charging.

•  Use SteriPEN

®

 only with clear water. Discolored or dirty water 

should be pre-filtered until clear prior to SteriPEN

®

   treatment. 

Use available SteriPEN

®

 Pre-Filter or FitsAll Filter to help 

clarify water. Coffee filters or a cloth can also be used in an 
 emergency. See also “Treating Turbid, Murky, or Cloudy Water”.

3 Easy Steps

SteriPEN

®

 Freedom treats a  

0.5L (16 oz.) dose of water volume

After Use

After using SteriPEN

®

 Freedom, use a dry cloth to remove water 

droplets from the device. Note: Do not use a damp or wet cloth to 
dry SteriPEN’s sensors as this may briefly activate the UV lamp.

Treating a 1.0 liter (32 oz.) volume

You may treat a full liter or 32 oz. by treating the water with two 
doses. Volumes larger than 1.0L (32 oz.) should be divided into 
1.0L or less quantities and treated. During all treatments stir 
thoroughly.

Flashlight Activation

The flashlight LED is near the USB connector 
at the base of SteriPEN

®

 Freedom. To turn on 

flashlight, hold horizontally and then rotate 
your wrist 180 degrees 3 times. Repeat action to deactivate the 
flashlight. To protect UV lamp when using flashlight, operate with 
lamp cover in place. 

SteriPEN

®

 LED Signals

LED COLOR AND  
PATTERN DISPLAY

INDICATION

Operating Signals

Green, slow blinking:  
1 second on, 1 second off  

0.5 liter (16 fl. oz.) dose in 
progress.

Red, slow blinking: 1 second on, 
1 second off

(1)

 Dose incomplete. Dry water  

sensors and repeat  treatment.

(2)

 Low battery warning;  

recharge your SteriPEN

® 

Freedom

Green slow blink with Red blink

0.5 liters (16 fl. oz.) dose 
 completed; low battery

Green, steady

Dose complete

Battery Signals During Charge

Red, steady

Battery charging

Green, steady

Unit fully charged

Lamp Warnings

Red 2 blinks, Green 2 blinks 
(repeating)

Over 7,900 treatments 
 completed; lamp replacement 
needed in under 100 doses

Red 3 blinks, Green 1 blink 
(repeating)

Lamp failure; replace lamp

No LED signal & UV lamp emits 
no visible blue light

(1)

 Charge unit 

(2)

 Lamp failure. Do not  consume 

water. Follow  warranty  procedure.

Safety and Operating Tips

Water Containers

SteriPEN

®

 purifiers may be used in glass, plastic, ceramic or 

 metal   containers.  SteriPEN

®

 purifiers should not be used in  

quartz   containers. 

Water Sensor Circuitry 

The SteriPEN

®

 water sensor circuitry is intended to prevent the 

UV lamp from illuminating unless it is completely immersed in 
water. If SteriPEN water sensors are not immersed within 13 
seconds of being activated, unit will turn off.  Activation or “ready 
mode” occurs when user removes lamp cover.   

Agitation of Water 

Agitation of the water by stirring with SteriPEN

®

 or rocking the 

container is essential for proper operation as this insures uniform 
exposure of all water to germicidal UV light.

Cold Weather Considerations 

Bring SteriPEN

®

 Freedom up to a temperature above 32°F/0°C 

before using. The purifier is programmed to add more time in 
cold weather. Ideally, store your SteriPEN

®

 in your pocket or 

warm place when in cold weather conditions.

1

  Remove lamp cover from body of unit. 

Note: water sensor pins at base of lamp 
must be dry. 

 Immerse the UV lamp and water sensing 

pins into the water; green LED will blink. 
Lamp will turn on automatically. 

Note:

 If 

visible blue light is not evident, the lamp is 
not on, and water should not be consumed.

 

3

  Agitate the water by stirring thoroughly 

until the lamp automatically turns off and 
indicator light becomes a steady green, 
indicating treatment is complete. The auto 
timer is set for 48 seconds.  Agitation 
throughout treatment is essential to 
provide uniform exposure of all water 
to the UV light. 

Note:

 If red LED turns on 

after lamp shuts off, purification was not 
complete.

  

Hydro-Photon, Inc.   
PO Box 675 
262 Ellsworth Road 
Blue Hill, ME 04614 USA 
Toll Free USA: 1-888-SteriPEN 
(+1) 207-374-5800 
[email protected] 
www.steripen.com

FRDM.UG.1105

Video available at www.steripen.com/freedomvideos/

Video available at www.steripen.com/freedomvideos/

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