what is the difference between NF and USP?

[Tranq]

purchased BA, BB USP grade and ethyl oleate NF grade from *******supply.net

are they both safe to use right out of the vials for brewing?

 

[Tranq]

is NF foodgrade? do i need to filter it before using the EO solvent?

 

[drewbolic]

Use the NF everything has to be filtered anyways

 

[Tranq]

thanks drew. i just want to make sure were on the same page...you mean i need to filter it separately before mixing or filter the final product?

i have USP grade BB,BA and NF grade EO...

so i dont need to filter the BB or BA(usp grade) but i need to filter the EO(nf grade) before mixing it all up?

 

[drewbolic]

Filter all final solutions before use.

 

[RJ]

don't worry about USP this or that. Like drew said, everything gets filtered so its a moot point.

i used to use peanut oil from the grocery store.

 

[Tranq]

thanks guys, just wanted to be 100% sure. better to be safe than sorry right?

 

[Deeyou]

Even if its filtered the point isnt moot.... NF and USP specification standards have criteria for the ppm quantities of heavy metals....

If you have any significant amount of heavy metals in dissolution... NO amount of filtering is going to get them out.. That is the reason why the USP standard carries so much weight.

Now from the site he posted..... They carry USP grade oils and solvents which are re-labeled "technical grade" because they are purchased in bulk and repackaged..

So.. Its up to you to decide if you take their claims for face value or not.