I have not done any LSA extraction but i try help.
The naphta washes is for removing fats and a lot of unwanted stuff who otherwise will end up in your final product.
I would normally warm the naphta slightly before adding it as warm naphta extracts better but as LSA is sensitive to heat it might not be good.
However, if you heat it to just say 45 degrees i think you are safe.
If unsure, look up properties of LSA and at what temperature it starts decomposing.
Never heat naphta directly on a burner or hotplate.
Warm it by boiling some water, put warm water in a wide jar and putting the beaker with naphta in the hot water so it gets warm.
Adding naphta 5cm over the seeds seems to be very much naphta, you can probably add half that amount.
The fats and other unwanted stuff gets absorbed into the naphta layer quite fast and just swirl it around and mix throughly.
You can let it sit for a minute or 2.
10 washes seem also very much.
You might can see when the naphta get clear and do one or 2 additional washes.
But if you have a lot of naphta it certainly wont hurt to do extra many washes.
To store LSA i would use small airtight glass container, preferably dark.
The smaller the better as less air will be inside with the product.
Dark, airtight glass vials would be ideal.
The other questions i cant help you with but maybe someone else can.
Grower
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