
Atalius |

Had a question what does +1 CL for the purpose of effect mean for say Touch of Bloodletting. This is the alchemical reagent in question.
PFS Legal Salt
Source Alchemy Manual pg. 33 (Amazon)
Price 5 sp; Weight —
Salt is a vital mineral commodity. It is most commonly used as a desiccant and as a catalyst.
Power Component
Doses 20 (10 gp); Spells necromancy school
Effect +1 caster level for the purpose of effect

Atalius |

hmm I'm not sure, alchemical reagents that increase duration come out and clearly state it though, ie:
Magnesium
Source Alchemy Manual pg. 0 (Amazon)
Price 1 gp; Weight —
Magnesium is an extremely light and reactive metal that burns brightly when exposed to air. It is important for all living things, especially plants.
Power Component
Doses 2 (2 gp); Spells transmutation school
Effect +1 caster level for the purpose of duration

Trish Megistos |

As part of the spell you get one free touch attack.
Unless you use a full round you can't deliver two touch attacks and that only once you have a BAB of at least 6 (or have haste).
I should mention that touch attacks with multiple touches can be held. So you could attack again the next round again. Say you're a third level cleric, you attack as part of the casting for free. Then next round you can use another standard action to attack again and on the third round one more time since the spell last for 3 rounds (even thought you'd get 4 attacks out of it).
Btw, this action is called holding the charge and is dispelled if you cast another spell.
I don't know many cleric spells but a cure light wounds spell would go (for a level 1 cleric) from 1d8+1 to 1d8+2. Or being a level 5 cleric, you could get an additional bonus from Divine Favor at caster level 6.
This reagent doesn't extend the maximum, so this caster level 6 cleric would still cast cure light wounds at d8+5 rather than d8+6.

avr |

Pathfinder changed cure spells to be conjuration rather than necromancy, Trish.
I think the intended use of salt as an alchemical reagent is to increase the HD limit of an animate dead spell, there's historical precedent for the use of salt in such rituals. Anything it grants to other spells is a coincidence if that's so.