IP ratings are defined as IPXX. The initial "X" is a number from 0 to 6 indicating the degree of protection against ingress by solid objects, and the second "X" is a number from 0 to 8 indicating the degree of protection against ingress by water.
DEGREES OF PROTECTION AGAINST SOLID OBJECTS
| IP0X Non-protected |
| IP1X 50mm diameter and greater |
| IP2X 12.5mm diameter and greater |
| IP3X 2.5mm diameter and greater |
| IP4X 1.0mm diameter and greater |
| IP5X Dust-protected |
| IP6X Dust-tight |
DEGREES OF PROTECTION AGAINST WATER
| IPX0 | Non-protected |
| IPX1 | Vertically falling water drops |
| IPX2 | Vertically falling water drops with enclosure tilted up to 15 degrees |
| IPX3 | Spraying water |
| IPX4 | Splashing water |
| IPX5 | Water jets |
| IPX6 | Powerful water jets |
| IPX7 | Temporary immersion |
| IPX8 | Continuous immersion |
FULL LIST OF IP TESTING
| IP00 | IP01 | IP02 | IP03 | IP04 | IP05 | IP06 | IP07 | IP08 |
| IP10 | IP11 | IP12 | IP13 | IP14 | IP15 | IP16 | IP17 | IP18 |
| IP20 | IP21 | IP22 | IP23 | IP24 | IP25 | IP26 | IP27 | IP28 |
| IP30 | IP31 | IP32 | IP33 | IP34 | IP35 | IP36 | IP37 | IP39 |
| IP40 | IP41 | IP42 | IP43 | IP44 | IP45 | IP46 | IP47 | IP48 |
| IP50 | IP51 | IP52 | IP53 | IP54 | IP55 | IP56 | IP57 | IP58 |
| IP60 | IP61 | IP62 | IP63 | IP64 | IP65 | IP66 | IP67 | IP68 |
Eason Wang