Change "Zółta Torba Alchemiczna" to "Żółta Torba Alchemiczna", and "Karmazynowa Torba Alchemiczna" to "Purpurowa Torba Alchemiczna".

Could you make a PR and include all the updates? See #237 and search for pl_PL to see what you need to update.
Or, alternatively, have a look at https://github.com/pahimar/Equivalent-Exchange-3/blob/db37134dd582a6b2144911f33e4eb954fd64423b/resources/mods/ee3/lang/en_US.xml

https://github.com/MicIce9/Equivalent-Exchange-3/blob/master/resources/com/pahimar/ee3/lang/pl_PL.xml Is that ok?

No, you still don't have the 1.5 updates.

Closing this in favour of a proper PR