# How exactly does module reprocessing efficiency apply?

**URL:** <https://forums.eveonline.com/t/how-exactly-does-module-reprocessing-efficiency-apply/57699>\
**Category:** Science & Industry\
**Created:** [February 16, 2018, 6:31pm UTC](https://forums.eveonline.com/t/how-exactly-does-module-reprocessing-efficiency-apply/57699 "2018-02-16T18:31:33Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Piotr\_Leusten](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/piotr_leusten/32/169358_2.png) [@Piotr\_Leusten](https://forums.eveonline.com/u/Piotr_Leusten)\
**Post date:** [February 16, 2018, 6:31pm UTC](https://forums.eveonline.com/t/how-exactly-does-module-reprocessing-efficiency-apply/57699/1 "2018-02-16T18:31:34Z")

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I’ve been looking at reprocessing, and I’m trying to understand exactly how my 50% efficiency applies.

I know that it applies within a single module: if I have 50 copies of a module, my 50% yield is applied against the total reprocessing yield for that module, not 50% of each module individually. That’s why if a module yields 1 unit of something on repro, you need to reprocess at least two at a time to get anything.

My question is, is this true only within modules, or does it apply to an entire reprocessing batch?

For example, if I have two DIFFERENT modules that both yield a single unit of Tritanium on reprocess, can I reprocess one of each together to get that unit? Or do I have to reprocess two units of Module A or two units of Module B?

Done a lot of reading through reprocessing documentation, but haven’t seen that answered.

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**Author:** ![von\_Susla](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/von_susla/32/227774_2.png) [@von\_Susla](https://forums.eveonline.com/u/von_Susla)\
**Post date:** [February 17, 2018, 5:58am UTC](https://forums.eveonline.com/t/how-exactly-does-module-reprocessing-efficiency-apply/57699/2 "2018-02-17T05:58:52Z")

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What stops you from check it ingame?

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**Author:** ![system](https://global.discourse-cdn.com/eveonline/original/3X/4/1/41ec4921cbaca7a6f9ea556e7cc20018461eae5e.png) [@system](https://forums.eveonline.com/u/system)\
**Post date:** [May 18, 2018, 5:58am UTC](https://forums.eveonline.com/t/how-exactly-does-module-reprocessing-efficiency-apply/57699/3 "2018-05-18T05:58:52Z")

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