Efficient Alchemy (Alchemist) Feat 4
Source Pathfinder Core Rulebook
Thanks to the time you've spent studying and experimenting, you know how to scale your formulas into larger batches that don't require any additional attention.
When spending downtime to Craft alchemical items, you can produce twice as many alchemical items in a single batch without spending additional preparatory time. For instance, if you are creating elixirs of life, you can craft up to eight elixirs in a single batch using downtime, rather than four.
This does not reduce the amount of alchemical reagents required or other ingredients needed to craft each item, nor does it increase your rate of progress for days past the base downtime spent. This also does not change the number of items you can create in a batch using Advanced Alchemy.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AlchemistThis indicates abilities from the alchemist class.