Buncher filter is very slow- help

Discussion in 'Steroid Homebrew' started by Blitz33, Nov 28, 2019.

  1. Blitz33

    Blitz33 Junior Member

    First time brewed, but I need some help with filtering it. Filtered with buncher funnel with 0.22micron 47mm membran filter but filtering process so slow like 50ml/35min, and changing filter paper every 50ml. I put liquid in 50celcius warm for faster filtration.

    Sterilizing;
    Washed glassware and vials in bleach, then rinsed with distilled water
    washed with ipa alcohol
    Baked for 1 hour in 130celcius

    Brewing;
    Warmed my oil(mct) to 45 celcius
    add powder test e
    add bb
    add ba
    cooked at 39celcius for 5 hours

    Filtering;
    Like I said 50ml/35min for filtering, I did 76 vials of test, takes my 17 hours or more, why is filtering procces so slow, where do I making mistake, I heard some guys filterin 100ml/15min.

    Sorry for my english.
     

    Attached Files:

  2. Blitz33

    Blitz33 Junior Member

    added photos of my equipment
     
  3. Cakedup

    Cakedup Member

    The main problem I can see bro is your PVDF filter or hydrophilic you need hydrophobic in order to speed up the process. Also it wouldn't hurt to go with a 90mm filter that supposed to 47mm.

    What are you bringing your pressure up to on the pump?
     
  4. Blitz33

    Blitz33 Junior Member

    Excellent advise from you thx, will try with hydrophobic. For Pump specs check below, bought cheapest one, idk about pressure
     

    Attached Files:

  5. Cakedup

    Cakedup Member

    I'm used to measuring vacuum pressure and mm/hg or Mbar. However from my research it looks like you're pump being as though it operates at up 150 microns (Which is Micron Mercury) converts over to 0.1500000029083 mm/Hg. If I'm correct about that which I'm pretty sure I am that's not nearly enough pressure and that's why. Well that's the first reason it's moving so slow. What I would recommend is buying a hand vacuum pump used for bleeding brakes from Amazon for $20. I used a hand pump years ago when I start it and it was no problem to get it up to 15 and mm/Hg. Depending on your setup meaning the Greyhound a filter the filter material and what kind of filtration system you using run out of pressure you can bring it up to varies personally I like to be able to bring it up to 25 mm/Hg, and that will allow you to filter between 5 to 800 ml every 30 minutes depending on if you're using a .22um or a .45um filter. I personally like hydrophobic better than hydrophilic as well, but keep in mind if you go with hydrophobic it needs to be pre wetted first using a solvent. What I would do is take BA, and a spray bottle and just spray the BA on the filter after you get it into the filter funnel. I don't really know if this answers your questions will help you out but hopefully it will and I will post a link to the hand pump I'm speaking of.


    CARSC Hand Held Vacuum Pump Tester Kit with Adapter and Case is Suitable for Automotive Vacuum Gauge and Brake Exhaust Kit (Blue)
     
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  6. Cakedup

    Cakedup Member

    Also I just seen your vacuum setup and I would go with the hand pump or an electric vacuum pump that you could get from eBay by typing this in.

    Impact 317M Oiless Suction + Pressure Aerator Vacuum Pump Ideal For ENT Cabinet
     
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  7. Blitz33

    Blitz33 Junior Member

    Thank you very much for your help,I m really grateful for your valueable informations. I will order hand pump you sent and I will post result in here.
    Also I will be checking filtration system and filter paper.

     
  8. Cakedup

    Cakedup Member

    Yea definitely keep me updated and let me know how things are going for you when the pump comes in. I have a few more tips for you then ad well...
     
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  9. jstarks11

    jstarks11 Member

    Personally, I would skip the filter paper buchner setup. Use that same setup, (pump you have I'm not sure about that draw being .1mm/hg, sounds like that would be impossible that it only pulls that much vacuum) but use WHATMAN POLYCAP filters!!! They work GREAT!!! SUPER!!! If your pump really is not getting up to 15mm/hg (you can measure this by buying a CHEAP vacuum gauge and attaching it inline) then yes, your pump has to be replaced. However, without looking your pump up and researching it I don't know. I can say this, if you paid over 50 USD for it then it should get to 15mm/hg NO PROBLEM. There are negative pressure pumps online that work in the 30mm/hg range that cost 50usd so I have a hard time believing your pump is not pulling more than .2mm/hg.
    Get a pump or air compressor pump convertor if you have an air compressor. Get you some whatman polycap filters and enjoy SMOOTH QUICK filtering!!!
     
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  10. Blitz33

    Blitz33 Junior Member

    Thank you for your helps guys, cant buy whatman polycap in my country unfortunatelly. Ordered hand pump will give it a try.
     
  11. skinnyman

    skinnyman Member

    What buchner funnel did you get? I think you have the same one as me. Takes couple of hours to filter 100-300ml.
    Go for the bottle top filters next time, worth every penny.
     
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  12. jstarks11

    jstarks11 Member

    Can you get Pall Vacucap 90mm in your country? Otherwise, order from outside your country and have it shipped in. It will come!!!
    The Pall Vacucap is GREAT!!! Does smaller quantity. But 1000ml through a Vacucap is not unheard of. maybe even more. I've done like 1000ml through one though.
     
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  13. Blitz33

    Blitz33 Junior Member

    Hi again, I bought hand pump but nothing changes still slow filtering, I m gonna try Vacucap or Whatman polycap.
     

    Attached Files:

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  14. Blitz33

    Blitz33 Junior Member

    I will do that, this way I cant work.
    Thank you

     
  15. Cakedup

    Cakedup Member

    Bro let me try to help you first thing that is not a bunchner funnel. That funnel has a long stem on the end of it which you pushed down into the rubber stopper that has a hole in the middle that goes into a filtering flask.

    Why does it look like you have 2 hoses zip tied together going from your pump to your filtering flask?

    Also the pressure on your hand pump needs to go up to at least 15 if not 20 mn/hg for you to get some movement.

    What kind meaning what material filters are you using and what pore size are they?

    The problem with this setup is where the funnel connect to the glass fritted piece that holds your filter or if you don't know what I mean where the blue clamp is. It will probably leak if you do not take some Teflon tape and wrap it around that seal to stop any air or oil from coming out. Also this will make it easier to take the pressure higher on the pump and keep the pressure there.

    However yes it will be much easier to go with a whatman polycap 36 as or a vacucap90. However you do not want to go with bottle top filters. Disposable bottle top filters are junk. Don't waste your money..

    If you got any questions let me know and I'll help you out or point you in the right direction should I say.
     
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  16. Blitz33

    Blitz33 Junior Member

    That 2 hose came with hand pump and zip tied, so I dont break the tie just connect it one hose.

    Can't go over 10mn/hg, pumped like hell, almost my fingers broke.

    Im using gvs pvdf hydrophlic .22 mic 47mm filter.

    Will try vacucap90 and post it here.
    Thank you very much for your helps..

     
    jstarks11 likes this.
  17. jstarks11

    jstarks11 Member

    Yeah, I had a feeling that would be the case. Like I said, try that vacucap. The polycap is really for MUCH larger batches. That vacucap is gTg!!! If you're doing over 1000ml then go to polycap
     
  18. jstarks11

    jstarks11 Member


    ^^^^^^ YES!!!! Bottletop filters, Zapcap, nalgene, etc... Those are all junk, do they and will they work? Yes, do they and will they work as good as and the way you want.... NO!!!
    Get the vacucap90 to start you out. They come in boxes of 10 so you have PLENTY of room for error or miscalculation. Then step up to polycap if you see you need more volume than vacucap can give you!!! Polycaps are EXPENSIVE to learn the ropes with. One thing about a polycap is ONCE you suck air up into it (more than a couple bubbles) it is OVER!!! It will not resume sucking!!! So, for example, I tried to do 2 batches once before. Had 1000ml erlynmeyer flasks but had 2000ml to filter. So I thought I would be smart and suck up the first 1000ml in one flask then when it was done I would pull the hose out and drop into the other 1000ml flask and continue... Didn't work out that way. Dropped into the other flask and the large amount of air that filled the filter while the first one sucked up dry caused the filter to air lock. So when I dropped the collection hose into the second flask there was NO PULL. Then because I used my last filter on this last batch, I had 1000ml that had to sit for 4 days for more filters to come in. Also, if you do get polycaps, don't adjust or open that white air vent on it. Leave it shut and tight. It will cause it to airlock as well.
     
  19. jstarks11

    jstarks11 Member


    Yeah bro, get that vacucap and roll!!! Go ahead and break down and order the box of 10. It's ALOT cheaper when you buy the box than just one and there could be accidents and you'll want reserves as posted in last post I made!!!