Hi peeps, I'm new on here & am seeking advice on A/B type extraction. swim has morphine sulphate IR & MR, I gather I grind up the pills, filter & make a base solution of 11+PH & here is where I'm stuck, I've read I can just leave the base morphine solution to sit in the fridge overnight & the M will of precipitated out of the solution to the bottom of the jar, or I've also read I can add an acid to get down to 9 & the morph will appear, is thus right thanks.
