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    Default Best filtration system for bigger volumes

    new to this forum and just joined because of the activity in the Hb section. great site and hope to contribute as best I can.

    does anyone use a Buchner funnel and Buchner flask? using sterile filter discs it would surely cut down the cost of bottle top filters.

    what is the best filtration system. the syringe filters are good for a test sample but not for larger volumes and I don't like the idea of ordering loads of bottle top filters
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    The buchner funnel will make a good *pre* filter - in fact it will be quite efficient - however, don't try to sterilize with it unless you have a good way of sterilizing the funnel, the flask and the filter disks.

    That final 0.2 micron filtration is killer - no point running it through a sterile filter into a non-sterile bottle, sadly.

    THey do make glass filtration systems that are easier to sterilize that buchner funnels that use membrane filters, but you do still have to be sure everything is sterile, or you're no further ahead.

    Bottle top filters aren't cheap, admittedly, but *if* you do a proper pre-filtration, you can get quite a lot of volume through them, bringing the cost per unit of product down.

    Doctor9
     

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    Quote Originally Posted by Doctor9 View Post
    The buchner funnel will make a good *pre* filter - in fact it will be quite efficient - however, don't try to sterilize with it unless you have a good way of sterilizing the funnel, the flask and the filter disks.

    That final 0.2 micron filtration is killer - no point running it through a sterile filter into a non-sterile bottle, sadly.

    THey do make glass filtration systems that are easier to sterilize that buchner funnels that use membrane filters, but you do still have to be sure everything is sterile, or you're no further ahead.

    Bottle top filters aren't cheap, admittedly, but *if* you do a proper pre-filtration, you can get quite a lot of volume through them, bringing the cost per unit of product down.

    Doctor9
    Thank you. Do you have a link to these glass filtration systems or do you put it together yourself from various places.

    Thanks again
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    welcome to MC brutha
    Best filtration system for bigger volumes

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    Quote Originally Posted by Presser View Post
    welcome to MC brutha
    Thank you Presser.
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    This is one possible supplier - you also need to get the filter membranes themselves. You need a source of vacuum as well, either a vacuum pump or a water aspirator.

    https://www.membrane-solutions.com/gl...ilter_unit.htm

    they also have the membranes, but only in large quantities (box of 400) - other online suppliers would likely have smaller quantities available. (I recommend PTFE as the most inert material with a PP backing, if necessary)

    Doctor9

    Doctor9
     

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    Welcome brother.
    You won't be disappointed joining this forum.
    Some great peeps hear wit good home brew exp.
    mi joy your stay.
     

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    Welcome to MC. Best home brew sub-forum on the net.
     

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    Quote Originally Posted by Doctor9 View Post
    This is one possible supplier - you also need to get the filter membranes themselves. You need a source of vacuum as well, either a vacuum pump or a water aspirator.

    https://www.membrane-solutions.com/gl...ilter_unit.htm

    they also have the membranes, but only in large quantities (box of 400) - other online suppliers would likely have smaller quantities available. (I recommend PTFE as the most inert material with a PP backing, if necessary)

    Doctor9

    Doctor9
    I ordered the glass filter holder, clamp and all the top part. along with a few different sterile media bottles so I can do a few batches in one sitting but I cant find sterile membrane filter paper.

    is there such a thing or do I need to sterilize it myself. sterile nylon or PTFE would suit me best

    - - - Updated - - -

    Thanks for the welcome BEAST and Beeflover. love the forum
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    Imo if you want to keep it simple and want a good quality filter that you can use even with a hand pump and crank out a few 1000ml. The what man zapcap is hard to beat. Add a prefilter which it comes with one, but I also run about 15ml of BA thru it before I ever use it. and I mean make sure to pull out every drop you can. You Gdansk set these to about 20 or 25 on a hand pump and kerb them go. They are made out of a flexible material so they don't crack and leak like most filters will

    the only reason I do this is BA is a bacteriostat. It will prevent the new growth of bacteria. The purpose of the filter paper is to catch the bacteria and all the garbage includinging viruses in a .2 the thought Is once warm oil containing bacteria passes into th filtration, it's going to start growing exponentially rhendering the filter isles in a short time. By doing a pre run with a little BA yea you may get a little extra in 400 to 1000 ml of gear but not enough that it's everr bothered me or anyone who has used it but it may just make your filter go a little faster for a little longer because it doesn't have bacteria growing once you stop for a minute. What man states these can be reused in the same setting as long as the filter stays wet. I wouldn't necessarily go switching compounds all though you could and I would save them and use them for multiple days. what they mean buy 're use is in the same time you are heating more and still on your media bottle or even switching bottles and keeping the paper wet. I always add a new prefilter paper y2k take out anything large which also preserves the filter for most use. But in one setting of use I toss it when done for the day but I will have multiple going at one time.

    If you have a few hundred extra to spend Irecommend getting a laboratory pump,medical pump or perlistatic pump. They are quiet, and all you have to do is set the vaccum pressure and in this case I would use a NALGENE FAST CAP, this thing you can run insane amounts thru and they come in size .1 which has the added benefit of filtering out microbes. I bought a pump brand new on eBay for 329 there are no moving parts so no oils or maintenance and it works like a champ. I'm talking liters or gallons per hour. Which is a bit more than I need but I wanted the fast caps and the .1 filters

    But for your everyday set up I don't think you can go wrong with a whatmam zapcap and a 77mm prefilter paper. These are great for guys just getting into bottle tops. I used a lot of other brands with a lot of frustration. They didn't want to filter what they claimed and would crack or just start to leak. You won't run into that issue with a zap cap. they are essentially dummy proof.
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    I am not going to discount what others have said, as I do not know how much you are trying to filter nor how quickly. I used bottle top once, about a decade ago, and it was nightmare. Personally, as soon as individual is ready to graduate from syringe filters, I feel they should go directly to peristaltic pump and whatman polycap filter.

    For pump, get this one:https://www.novatech-usa.com/Products...D75-XA-LSAUXXX

    UD75-XA-LSAUXXX
    MEC-O-MATIC Dolphin Series Peristaltic Metering Pump
    97 GPD @ 25 PSI, 115 VAC
    (Manual Run Time Control)

    If you only purchase one, it will cost you $240.37.
    The first time you use it, you will know you got your money's worth.

    Used in conjunction with Whatman Polycap 75AS, 0.2um, with Filling Bell, you can filter approximately 255ml/min. Or 1 Liter of media every 4 minutes.

    I recommend using an autoclaved 2000ml Hybex media bottle.

    Once you are proficient, you will be able to throw Polycap onto Hybex bottle and start up pump, then occupy yourself with other lab tasks for entire 8 minutes it takes to filter 2L of media into Hybex bottle, stop pump and cap bottle, move filter onto another Hybex and crank it up again.
    Once all of your media has been filtered, use a bottle top dispenser to fill vials. Even manual dispenser and you should be able to run 50-75/min.
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    6 fingers is dead on. But if your talking 400 to 500ml I would simply use a whatman zap cap. For me thew are the only bottle tops worth using. Every other one I tried would crack or begin to leak at the filter like leak out the sides and that was at any amount of vacuum but with a zapcap they use a more flexible plastic so even if u were to use a cheap hand pump you can have it done in 15 minutes deoendingb on the hormone. But for any real volume 6 is dead on andv good looking out on a link. I found mine on eBay for 300. It's the best thing I've ever used. I will still use a syringe filer with tne, t suspension and win oil and water based as well as inject dbol and drol its just personal preference on those for me. I literally will filter 1-2ml into my bac water then shake and repeat it's time consuming but my recipe is excellent and all painless and I'm not doing that type of volumrb these days. If I do 1000ml in a day anymore I'm good but I may do that with a handful of hormones and I'm good for a few weeks to a coupe months at times. So again 6 is correct 100%, but fircmuch smaller set ups zapcaps are imo the best bottle top. Just my 2¢.
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    Hello

    This post is interesting for me. Soon i have to do a brew around 600 to 700 ml of different compounds(susta, bolde, tren, masteron and prop). I am looking to do it with a bottle top filter of course, but i was thinkin about millipore, but after read this post you change my mind. I think i am gonna use a whatmam zapcap as Userat204 sais, but i have some question...
    How much pressure can i apply to that top bottle filters?
    If for example i filter 100m susta, can i filter after, maybe 30 min after(the time that it takes to do another solution with the beaker) another brew for ex bolde by the same filter? or should i clean the filter like you said Userat204 with 15ml of BA?
    For how many ml can a whatmam zapcap being used?

    Thanks!
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    Giru, BA won't really clean the filter but if you are making multiple compounds you can use the same filter a couple timesc as long as it's wet and preferably in the same session. I run a little BA thru my zap cap when new because it prevents the growth of new bacteriia. If you think about it and this is just my theory your filter catches bacteria among other things but it's a perfect breeding ground for bacteria to grow once in the filter so hopefully the BA will prevent bacterial growth and it won't clog up your filter so quickly.

    But on a zap cap I get the pressure up to 25 no problem. If u use a millpore good luck. I couldn't get over 10 on the pressure I can't think of the initials for the pressure measuement right now but those are a hard plastic abd crack very easily. If you want to use a bottle top use a zap cap and I add a pre filter paper to it each time. If you look on medlab site under pumps I believe maybe filters they have a. 70+ mm filter paper that fits well. Use that. Change it each time u start a new batch. But get a few .22 depending on how u plan to make it. I will use the same zap cap for a couple hormones in one sitting but I leave out 20ml of my total oil and run it thru warmed at the end to hopefully draw out all the hormone then I start the next. Its pretty simple really but zap caps are the only bottle tops that ever worked well for me and make sure you have sterile glass media bottles you are filtering into.
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    woooow Userat, amazing explanation everything is clear now. Thanks!!
     

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    Does anyone bake instead of filtering? 67 mentioned to me that he doesn't filter anymore, pretty interesting to say the least
     

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    Quote Originally Posted by Pristi1340 View Post
    Does anyone bake instead of filtering? 67 mentioned to me that he doesn't filter anymore, pretty interesting to say the least
    Any link to where he says this?
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    Quote Originally Posted by bonacris View Post
    Any link to where he says this?
    He told me in email Bona
     

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    Quote Originally Posted by 6-fingers View Post
    Once all of your media has been filtered, use a bottle top dispenser to fill vials. Even manual dispenser and you should be able to run 50-75/min.
    Where is the best place to find a 45mm bottle dispenser? I can't find one under 575$. Is that just what they run?
     

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    Quote Originally Posted by Pristi1340 View Post
    He told me in email Bona
    Can you PM it to me??? If you don't want to I understand man
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    Quote Originally Posted by bonacris View Post
    Can you PM it to me??? If you don't want to I understand man
    i didn't save the email. just PM him sometime
     

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    Quote Originally Posted by 6-fingers View Post
    I am not going to discount what others have said, as I do not know how much you are trying to filter nor how quickly. I used bottle top once, about a decade ago, and it was nightmare. Personally, as soon as individual is ready to graduate from syringe filters, I feel they should go directly to peristaltic pump and whatman polycap filter.

    For pump, get this one:https://www.novatech-usa.com/Products...D75-XA-LSAUXXX

    UD75-XA-LSAUXXX
    MEC-O-MATIC Dolphin Series Peristaltic Metering Pump
    97 GPD @ 25 PSI, 115 VAC
    (Manual Run Time Control)

    If you only purchase one, it will cost you $240.37.
    The first time you use it, you will know you got your money's worth.

    Used in conjunction with Whatman Polycap 75AS, 0.2um, with Filling Bell, you can filter approximately 255ml/min. Or 1 Liter of media every 4 minutes.

    I recommend using an autoclaved 2000ml Hybex media bottle.

    Once you are proficient, you will be able to throw Polycap onto Hybex bottle and start up pump, then occupy yourself with other lab tasks for entire 8 minutes it takes to filter 2L of media into Hybex bottle, stop pump and cap bottle, move filter onto another Hybex and crank it up again.
    Once all of your media has been filtered, use a bottle top dispenser to fill vials. Even manual dispenser and you should be able to run 50-75/min.
    any difference wit hthe 36AS 0.2um?
     

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    Really interested in jump to an air pump peristaltic pump. Does anyone have a pic of the setup?? or if not, how is the setup? i have a glass filtration system, so my idea was replace my hand pump vacuum for an electric one to speed up the filtration, but i saw that a peristaltic pump works in different way....

    thanks!
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    man that sounds like a lot of work just for some personal gear stash lol, and i certainly hope your not making it to source out, no good can come of that daddio, so hope its just a hobby big guy
    Best filtration system for bigger volumes

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    Sorry but I oppose all systems that are not closed loop. Look for a whatman or millipor 90mm .22u in line filter. Can do many liters. Use gentle heat and get a vacuum pump.
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    Whatman, Millipore, Nalgene, Autofil are good. But which one is the best? Yet to know.
     

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    Quote Originally Posted by Dnindustry View Post
    Sorry but I oppose all systems that are not closed loop. Look for a whatman or millipor 90mm .22u in line filter. Can do many liters. Use gentle heat and get a vacuum pump.

    Hello I am new here but not new to the world of this industry. I have tried the bottle top millipore and nalgen system .22 500/1000ml systems with a vacuum pump. Took way too long and had a few break although they did filter very effectively. Efficiency is what I'm more concerned with now for sterility purpose on a larger scale but can't afford for a 3hr 500ml system anymore. The inline system you describe sounds like the way to go as long as it is .22 can you point me in a direction? I have been looking but am trying to set up a correct and exact system.

    Any help would be greatly appreciated thank you
     

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    Quote Originally Posted by Lonesldr View Post
    Hello I am new here but not new to the world of this industry. I have tried the bottle top millipore and nalgen system .22 500/1000ml systems with a vacuum pump. Took way too long and had a few break although they did filter very effectively. Efficiency is what I'm more concerned with now for sterility purpose on a larger scale but can't afford for a 3hr 500ml system anymore. The inline system you describe sounds like the way to go as long as it is .22 can you point me in a direction? I have been looking but am trying to set up a correct and exact system.

    Any help would be greatly appreciated thank you
    I would recommended you to use glass filtration system instead of plastic ones. Much faster, dont break, and can be reused multilple times


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    Sorry to ressurect such an old thread but theres a lot of good info ive found in here. Ive been trying to find alternatives to the shitty filtertop units that either crack, clog, or just fuck up in some way.

    6-fingers had some really good info on using a perastaltic pump along with a whatman polycap filter. Is there anyone else here that uses this set up? Pretty sure i have a general idea of how things would work but if someone could explain in a little more detail that would be great. Also, i realize this was posted 4 years ago so if there are any other preferred ways for filtering im open to suggestions.
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    Quote Originally Posted by Grow523 View Post
    Sorry to ressurect such an old thread but theres a lot of good info ive found in here. Ive been trying to find alternatives to the shitty filtertop units that either crack, clog, or just fuck up in some way.

    6-fingers had some really good info on using a perastaltic pump along with a whatman polycap filter. Is there anyone else here that uses this set up? Pretty sure i have a general idea of how things would work but if someone could explain in a little more detail that would be great. Also, i realize this was posted 4 years ago so if there are any other preferred ways for filtering im open to suggestions.
    If you find the right manufacturer you won't have those problems. The actual bottle top filter has never cracked when I've used them, is that even possible?
    If you're talking about the plastic bottle, use glass media bottle instead. Plastic bottles crack 90% of the time, they aren't made to handle that kind of pressure for that long.

    Polycaps are used for filtering very large amounts.

    I always recommend regular plastic bottle top filters (just check if it's compatible with the solvents you're using and look around what other people are using)
    The reason why I recommend them is because they are very convenient and cheap. You don't have to sterilize them and all that.

    If you've already decided to use one, you pretty much need sterile tubing for the pumphead, a pumphead,a controlunit/or just a pump and ofcourse the actual filter.

    If you could be more specifik I could try to answer your question
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    Quote Originally Posted by thx View Post
    If you find the right manufacturer you won't have those problems. The actual bottle top filter has never cracked when I've used them, is that even possible?
    If you're talking about the plastic bottle, use glass media bottle instead. Plastic bottles crack 90% of the time, they aren't made to handle that kind of pressure for that long.

    Polycaps are used for filtering very large amounts.

    I always recommend regular plastic bottle top filters (just check if it's compatible with the solvents you're using and look around what other people are using)
    The reason why I recommend them is because they are very convenient and cheap. You don't have to sterilize them and all that.

    If you've already decided to use one, you pretty much need sterile tubing for the pumphead, a pumphead,a controlunit/or just a pump and ofcourse the actual filter.

    If you could be more specifik I could try to answer your question

    With the bottle top filters, yes i was talking about the recievers cracking. I have switched to glass media bottles, but the filters still end up clogging and dripping very slowly, if at all. I recently used a millipore filter unit and it stopped dripping after 50ml and leeched a blue pigment from the plastic into my brew. If you dont mind me asking, what brand filters are you using? I am doing decent amounts of volume with multiple compounds.
    What does a pumphead look like? I only thought id need the pump with tubing and a polycap filter. Are there any other ways to use a polycap filter? I can't find much about them online. Thanks for your reply.
     

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    Quote Originally Posted by Grow523 View Post
    With the bottle top filters, yes i was talking about the recievers cracking. I have switched to glass media bottles, but the filters still end up clogging and dripping very slowly, if at all. I recently used a millipore filter unit and it stopped dripping after 50ml and leeched a blue pigment from the plastic into my brew. If you dont mind me asking, what brand filters are you using? I am doing decent amounts of volume with multiple compounds.
    What does a pumphead look like? I only thought id need the pump with tubing and a polycap filter. Are there any other ways to use a polycap filter? I can't find much about them online. Thanks for your reply.
    U always need glass media bottles.
    Receivers crack and solvents eat most of them and leave gear cloudy and prolly unsafe I would imagine....

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    Whatman Zap caps work good on media with decent vac even hand vac....

    Larger volumes use whatman capsule with electric vac in glass media or recieved with a inlet and outlet for vac... one can be bought resistant as a top with in and out or made.... but that is only for incline mechanic minded!!!!

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    So this is what i ended up going with.

    1000mL Heavy Duty Glass Filter Flask Kit

    That's the reciever

    And then i got these filters

    Foxx Life Sciences 364-2811-OEM EZFlow Membrane Disc Filter, Nylon, 90 mm Diameter.2 mm Pore Size (Pack of 25): Amazon.com: Industrial & Scientific

    Could anyone recommend some good filter membranes that work well with oil?

    Im sure these will be clogging at some point since they were pretty cheap but we'll see.
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    ill bump this for others who can help, but its all chinese jibberish to me lol
    Best filtration system for bigger volumes

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    Thank you sir!
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    With regular solvents and co-solvents at normal % (BA,BB) you can use PVDF filter or Nylon sometimes
    but if you brew with EO or GUA (no matter what % on it) you must use PTFE only
    If you are safety player just use PTFE membranes only,but it's slower but safer than other membranes
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    Thnx I knew someone could answer that
    Best filtration system for bigger volumes

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    Quote Originally Posted by hgmara View Post
    With regular solvents and co-solvents at normal % (BA,BB) you can use PVDF filter or Nylon sometimes
    but if you brew with EO or GUA (no matter what % on it) you must use PTFE only
    If you are safety player just use PTFE membranes only,but it's slower but safer than other membranes
    Thanks for that info. Do you have any experience with using a pump like the one i posted a few posts back? I held off on ordering it until i find out more info. All i know is i am sick of these disposable filters. I need to get something thats all glass and autoclaveable. Doesnt anyone use other set ups than these cheap plastic filters?
     

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    Quote Originally Posted by Grow523 View Post
    Thanks for that info. Do you have any experience with using a pump like the one i posted a few posts back? I held off on ordering it until i find out more info. All i know is i am sick of these disposable filters. I need to get something thats all glass and autoclaveable. Doesnt anyone use other set ups than these cheap plastic filters?
    The bigger volume guys use Whatman capsule with peristaltic pump but it will leave behind around 40ml. Electric vac pump will pull that thru.
    Anyone ready for large volumes should know what membranes are resistant to what solvents... nylon best for normal bb and ba...
    It's your other stuff that u gotta look at for.

    But really nothing wrong with throwing away a bottle top zap cap or capsule after 500-1000ml. That amount takes less than 15 minutes with pump and capsule....

    @chemicalintern if he could chime in he has lots of experience with this....

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    As stated @ChemistryIntern knows his Sh7t but nobody tells granny's recipes!!!

    Look thru all threads in this section and valuable info here.

    Several threads I will bump later on info on membranes

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    Quote Originally Posted by Muscle mechanic View Post
    As stated @ChemistryIntern knows his Sh7t but nobody tells granny's recipes!!!

    Look thru all threads in this section and valuable info here.

    Several threads I will bump later on info on membranes

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    Yes that would be greatly appreciated. I think i want to go to perastaltic pump route. If i went that route, could i filter multiple compounds with only using one polycap filter? Anyone know? Typically how long do they last? I think i read on here they last quite a while as long as they are wet. So the things i would need is just the pump, some sterile tubing, and the filter right? And of course some sterile beakers for the finished solution to flow in to.

    - - - Updated - - -

    And i appreciate the help from everyone so far. Thank you
     

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    Quote Originally Posted by Grow523 View Post
    Yes that would be greatly appreciated. I think i want to go to perastaltic pump route. If i went that route, could i filter multiple compounds with only using one polycap filter? Anyone know? Typically how long do they last? I think i read on here they last quite a while as long as they are wet. So the things i would need is just the pump, some sterile tubing, and the filter right? And of course some sterile beakers for the finished solution to flow in to.

    - - - Updated - - -

    And i appreciate the help from everyone so far. Thank you
    Resistant tubing sterile... and hand or electric vac to pull last 40ml that stays in capsule because pump can't pump once done thru pump area....
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    Quote Originally Posted by Grow523 View Post
    Yes that would be greatly appreciated. I think i want to go to perastaltic pump route. If i went that route, could i filter multiple compounds with only using one polycap filter? Anyone know? Typically how long do they last? I think i read on here they last quite a while as long as they are wet. So the things i would need is just the pump, some sterile tubing, and the filter right? And of course some sterile beakers for the finished solution to flow in to.

    - - - Updated - - -

    And i appreciate the help from everyone so far. Thank you
    This I drew up for someone who caught on and uses only vac route of drawing. He uses electric and drilled hole in media bottle in side at top area and added rubber push in seal for vac connect.

    He loves it I drew photo a couple years back it's in another thread.

    I am just a mechanic and work on air compressors so this is simple for me to set up!!!



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    Filters for a peristaltic pump

    Filters for a peristaltic pump

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    - - - Updated - - -

    https://www.musclechemistry.com/upload/steroid-powder-recipe-discussion/86551-filters-peristaltic-pump.html#post817610
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    Awesome muscle mechanic. Thank you for that info. I believe you said you can use the capsule filter with a regular vacuum pump instead of a perastaltic pump. Can you explain that better? Because if i can save 250 dollars by not buying a peristaltic pump, id prefer to just use the vacuum pump i have now but i don't ynderstand how it would work.
     

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    Quote Originally Posted by Grow523 View Post
    Awesome muscle mechanic. Thank you for that info. I believe you said you can use the capsule filter with a regular vacuum pump instead of a perastaltic pump. Can you explain that better? Because if i can save 250 dollars by not buying a peristaltic pump, id prefer to just use the vacuum pump i have now but i don't ynderstand how it would work.
    I don't think that will work.
    Sink, suffer, self-destruct. Rise stronger, reconstruct

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    Quote Originally Posted by thx View Post
    I don't think that will work.

    Yeah me either. I have just recently found that PES membrane filters work the best. I dont mind using these filters at all but i think to save money in the long run it would be a good idea to get some reusable glass bottle top filters and buy some good membranes, along with reciever media bottles. Probably will need an autoclave too then.

    How much better is using an autoclave as opposed to dry heat sterilization? Does using an autoclave sterilize that much better than dry heat? Anyone know of any decently priced autoclaves?
     

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    Quote Originally Posted by Grow523 View Post
    Yeah me either. I have just recently found that PES membrane filters work the best. I dont mind using these filters at all but i think to save money in the long run it would be a good idea to get some reusable glass bottle top filters and buy some good membranes, along with reciever media bottles. Probably will need an autoclave too then.

    How much better is using an autoclave as opposed to dry heat sterilization? Does using an autoclave sterilize that much better than dry heat? Anyone know of any decently priced autoclaves?
    It works many use it. I will explain better!!
    Giru uses and Chemintern and many many others including tested myself.
    I am Mechanic on air compressors and vacuum and pressure control everything.

    I will explain later. The vac pulls suction just like primer pump on diesel engine thru micron fuel filter.

    So vac pulls thru pickup tube thru filter and suction side is connected at media bottle.
    Caps can be purchased or media with vac side outlet!!!

    Or drill hole like Giru did..... it's works so good I can design and sell pre-built for alot of $$ but didn't want the association!!! But most guys who are not mechanically minded with stick to books and bottle tops!!!

    The vac needed with pump just to get the 40ml out left behind!!!

    Another guy big volume guy uses a T fitting set up and down and vac pulls suction up and with bottom of T larger and reduces at top..... clean filtered falls gravity into media vial... so lots of ways from mechanically inclined!!!!

    Will find time to explain but it's common sense of vac and suction with reservoir closed only vent it where vac exists pressure

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    It's works same as oil filled air compressor seperator allows clean air to breath with scavenger line or another diesel fuel system primes fuel pressure from tank thru filters to injectors with no air in system to combust!!!

    I use a Catipilliar hand suction pressure as vac pump on and pull out Beaker thru a syringe filter and out 100ml vial with rubber stopper not silicone. It was to to experiment and prove laws of physics !!! Vac, pressure, and gravity all part of physics!!! I am working out can only help so much I am Mechanic so it's nothing for me....

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