Frequently Asked Questions
What is a LifeStraw?
A LifeStraw is a portable water purification tool that cleanses surface water and makes it safe for human consumption. It is just 250mm (10”) long and 29mm (1.1”) in diameter and can be hung around the neck. A LifeStraw requires no electrical power or spare parts.
What does a LifeStraw do?
A LifeStraw can filter up to 700 litres of water and effectively removes most of the micro-organisms responsible for causing waterborne diseases.
Which diseases will a LifeStraw prevent?
LifeStraw kills disease causing micro organisms which spread diarrhoea, dysentry, typhoid and cholera.
Which disease causing micro-organisms are filtered by LifeStraw?
LifeStraw filters bacteria including Shigella, Salmonella, Enterococus, Staphylococcus Aureus and E.Coli.
Are there any tests to prove this?
LifeStraw has been tested by independent and qualified research laboratories. Click here to see the test results.
How does a LifeStraw function?
A LifeStraw contains a specially developed halogen-based resin, an extraordinarily effective material that kills bacteria on contact. Textile pre-filters are used in the LifeStraw to remove particles up to 15 microns. Active carbon withholds particles such as parasites.
What do the tests and research studies indicate?
The studies indicate the following:
- The level of bacteria in the water will be reduced to levels that will provide water safe for human consumption. ‘Safe’ implies water from which any health risk is minimal.
- The particulate removal suggests that the number of any parasitic ova in raw water will also be reduced significantly.
- The release amount of iodine in water treated from LifeStraw is not normally damaging to human health. People having thyroid problems and allergic reaction to iodine must seek medical advice before using this tool.
What is the life expectancy of a LifeStraw?
One year from the start of usage (a calculation based on the consumption of 2 litres of water per day) or 700 litres. Use beyond expiry will not deteriorate existing water quality.
What is the required daily water consumption?
The World Health Organisation (WHO) default levels for the quantities of drinking water (refer to WHO drinking water quality guidelines third edition 2004, Annex III) are:
- For a 10kg child, 1 litre of water per day - therefore a 700 day expiry.
- For a 60kg adult, 2 litres of water per day - therefore a 350 day expiry.
Who can use a LifeStraw?
Adults and children of any age can use a LifeStraw, provided they have the ability to suck water through the LifeStraw.
How should a LifeStraw be used for the first time?
First time users are advised to spit out the first couple of mouthfuls (40ml) as a small amount of harmless black carbon water will be expelled on initial use.
First time users may find it difficult to start sucking. This is because a natural brake on the flow of water has been put into the LifeStraw as a controlled flow between 100ml and 150ml per minute is needed to receive the maximum benefit of the bacteria killing effect.
How can a LifeStraw be effectively utilised?
At regular intervals, it is recommended to blow the last mouthful of water (as well as some air) through the LifeStraw. This will clean the pre-filters of whatever sand, silt and debris that might have got stuck in the textile filters.
Will a LifeStraw filter arsenic, iron, flouride and other heavy metals?
No.
What is the impact of saline water on a LifeStraw?
We do not recommend using a LifeStraw in saline water.
Can I share my LifeStraw with other people?
It is not recommended that you share your LifeStraw with others. Any outside contamination of the LifeStraw will not be compensated by internal purification.