Cloudy oil / white particulate BHO extraction


#1

Hey all,

I’m a fairly novice extractor (been running CLS for about 6 months) but have had great mentors and a strong background in engineering. Our team has been running in-house product successfully, making live resin diamonds and all that fun stuff. Normally our product comes out beautiful and clear.

The last month, something has changed from our grow team and our fresh frozen material runs are coming out very cloudy. We run pure n-butane or sometimes 70/30 at -60 to -70F, so our process stays at approximately -40. Soak for 5-10 min or so, and pass through a 10u filter. We normally have pristine, crystal clear oil. Now even with the filter, our product is super cloudy.


Jar on left: current cloudy runs
Jar on right: run of material sourced outside of our facility

It almost seems like we have a physical contaminant that filters out, but we can’t be 100% sure since our attempts at using 2u filter or smaller are hit or miss. We have taken the cloudy oil, mixed it with distilled water, and allowed it to settle to form 3 distinct layers, cloudy oil on top, white particulate in middle, and mostly clear water/slightly cloudy water on bottom.

The sample passes the emulsion test and based on our operating temps-I don’t think it could be a lipid.

If we run material from a different source-it comes out crystal clear, which confuses the heck out of me. Any chance it could be water? We dehydrate our solvent with a molecular sieve but who knows how effective our regeneration might be. But that is our next step to pull all the beads out and run in the oven overnight.

Anyone have any ideas what it could be?!


#2

NurdRage has a youtube video on how to measure the effectiveness or your molecular sieves thru the amount of heat they give off. at least then u could know if its water. I know some of the terpenes specifically a-pinene make a white opaque mixture when mixed with water.


#3

Pretty sure you can weigh them prior to use to build a base line @Shadownaught


#4

Just don’t think it could be water as we have dried the sieve in a vac oven overnight at 250F, but I was sloppy and didn’t measure the pre/post weights. We’ve also done the following as a check:

Run 1. Run our material - came out cloudy.
Run 2. Ran sourced material - came out clear.
Run 3. Ran our material -came out cloudy.

All parameters were held the same. Same exact solvent, same everything. No clean-out of column or system.


#5

Do you guys machine trim at your facility, do they use anything besides water on the trimmers when running if so?


#6

No machine trimming. Everything trimmed by hand for fresh frozen whole plant extractions.


#7

Dirty hands? Dusty nylon gloves?


#8

I’d start with your grow team. Ask them WTF they’ve changed.

You don’t get this phenomenon with outsourced material, so it’s not anything you’re doing wrong,

It’s got to be something between the cloner & the extraction tube.


#9

Do you have access to a centrifuge?

If your filtration succeeds “sometimes”, you may have a very fine suspension that varies in particle size from run to run.

Spinning the shit out of it might work.

I still think shaking the head grower till they admit what they’ve changed is the place to start.


#10

It could be some sort of foliar product.


#11

Could micronized sulfur mixed with water foliar sprayed onto the plants during veg cause this problem months later? Our finished product does not have a sulfur taste to it though. We tested a sample with copper and alcohol and did not get a blue or dark grey reaction either.

Beyond that, I’ll have to dive deeper into what foliars are being used.

We don’t have a centrifuge and wouldn’t be permitted to use one with butane.


#12

Doh! Too much EtOH work. Not enough meds.

I’m sure an appropriate 'fuge could be had. I’ve got an old Sorval RC2 that holds -15C and looks fairly well sealed, but there’s no way it’s C1D1 rated.


#13

I get same effect when I soak the material like you did, don’t know why but every time I soaked for live it’s cloudy, if I do no more than min or 2 I get clear Crystals, other wise looks like budder


#14

I find foliar products to be unnecessary and are just a way to potentially leave residues on the plant matter that will need to be seperated later. Are the growers feeding any synthetic plant hormones or PGR’s that could accumulate in your plants cells? Very strange that all your in house product is coming out looking like that cloudy suspension


#15

You know the more I go back and look at some my pics, this may sound stupid AF bc I’m no where near as smart, but could the cloudy samples be just highly saturated with THC and the other not as much possibly…

If not that then did you run the exact same clone as them?

If not then this may just be a case of mistaken identity…I have plenty that start cloudy (saying was blasted correctly bci think you did) an they get more clear as the THC crashes out…bc I do have some that start cloudy but finish beautiful,

Is this live? If so then maybe yeah that’s probably it if your not running the exact clones


#17

when i leave the buds above 62moisture and run unfrozen i get cloudy wax. my guess is moisture in the wax/butane from budz, when i freeze and use same sop i get clear , so check moisture in finished product. hope this helps