Difference Between Water-proof And Water-resistant ?

This is Allen He. I have written : Difference Between Water-proof And Water-resistant by Allen He on Travel

More and more devices become water-resistant or water-proof, users have an important question: What is the difference between water-resistance and waterproof? Users just want to figure out how their devices can stand with water.
Firstly, here are definitions from Oxford English Dictionary:
Water-proof means impervious to water.
Water-resistant means able to resist the penetration of water to some degree but not entirely

Comparing to water-proof, water-resistant is the lower level of water protection. Some water-resistant devices always have some special design to fight with water and make it difficult for water to enter. This is always use in devices like watches to help them survive from hand washing or raining.
The first number after letters “IP” shows it solid protect, which is measured form 0 to 6, while the second number is the degree of protection against the entry of moisture, the rage is from 0 to 8. To transfer these two numbers to the meaning we understand, you can follow two charts below:

Water-proof devices may look safer to stay underwater. Consider about the definition, there shouldn’t have gotten any problem for using them underwater. But, in fact, there is none standards for industry to stipulate water-proof. For some products, it may fully be protected from water, but others may just be able to survive underwater for a period of time. This totally depends on makers.

How can we know the ability for devices to survive underwater? The only and thing we can use to measure is a rating scale called Ingress Protection Rating scales or IP Codes. It is made of letters “IP” and one or two digits, such as IP34. International Electrotechnical Commission(IEC) design this rating scale as a system for classifying the degrees of protection provided by the enclosures of electrical equipment.

We can take IP67 iPhone 7 as an example. The IP Code shows it can be fully protected from solid, and at the same time, it can stay up to 30 minutes underwater for 1 meter depth. But, normally, the water resistant testing is operated under fresh water. Unless it is guaranteed by the manufacture, there isn’t any protection against salt water or sea water.


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