Quote:so I did one pull per day 4 times
Could you clarify what you mean by this?
The tek calls for each pull to be mixed/let to separate 4x...then siphoned off and freeze precipitated.
You can of course put all your pulls in the same dish...but it is advisable to fan evap the total amount of naphtha down considerably to further concentrate the saturation...then freeze the result in one dish.
The 'disappearing xtal' syndrome has been noted a few times here as well as only getting goo.
It should be noted that not all ACRB is actually what they say it is and has the possibility of being either bunk or very low in active alkaloids.Perhaps you could try a small amount of warm naphtha or heptane (say 30-50 ml) to dissolve 'all' your goo and remaining xtals in the same dish as you froze...That way you can be sure you are freeze precipitating all your available goodies.
Basically doing a Re-X on everything you have.
Hopefully the xtals will stay stable...once the solvent is poured off...return to the freezer straight away (upside down) so that they can't dissolve a higher temperatures...Once all the solvent is visibly drained...fan dry with haste and see what remains.
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Reserve the right to change your mind at any given moment.