Qingdao Sigma Chemical Co., Ltd (International, US, EU, Canada and Australia domestic

[The-Squat]

Sterile filters are always individually packaged.

This is another decent brand, and you should pick yourself up some 13mm .22um PES filters for your peptides. Not just for particulates, but to reduce the number of aggregates to prevent immunogenicity and minimize the risk of, god forbid, hitting the "peptide horror lottery" of a self replicating misfolded protein from lodging in your brain and saddling your relatives with a drooling version of yourself with a destroyed mind.

Syringe Filters - Order Online

0.22μm and 0.45μm syringe filters with high flow rate, low protein binding and very low hold-up volume. For HPLC sample preparation and cell culture filtration

shop.cobetter.com

I wonder how their bottle top filters compare to millipore.

 

[Ghoul]

Seriously asking, does it truly matter if the syringe filter itself is sterile?

On one end of the filter you connect it to the syringe tip containing non-sterile fluid.

On the other end you have a sterile needle poking into the vial's rubber stopper.

So long as the fluid goes through the filter and into the needle wouldn't it be guaranteed that everything flowing in the vial is sterile?

I have never used a syringe filter so IDK.

A compounding pharmacy once had an injectable product they produced lead to the deaths of numerous people because it was determined a mold that developed on a pile of rotting leaves outside got into the ventilation system and deposited a few spores at essentially undetectable levels into a few vials within their "sterile processing area".

Unsterile filters are not produced in a way that focuses any concern whatsoever about what they may impart into what they're filtering because they're not expected to be used in processing anything that will be injected into a living creature.

 

[Dirthand]

Thanks, I actually have the pekybio filters for the primo. Don’t remember what brand I got for the HGH, but they are sterile. Forgot why I decided not to get cobetter, but might get some next go around.

I will say that if you are just filtering smaller amounts.. like a kit is make sure and get the 25mm diameter.. the 33 would be rate to filter a larger volume but it will hold more of you product.. I mean you can clear it out with pushing air thought it. Ut I don't lije doing that

 

[MissedArmDay66]

Mr. Ghoul those are unsterile

They have both options on that website

 

[mok4315]

Seriously asking, does it truly matter if the syringe filter itself is sterile?

On one end of the filter you connect it to the syringe tip containing non-sterile fluid.

On the other end you have a sterile needle poking into the vial's rubber stopper.

So long as the fluid goes through the filter and into the needle wouldn't it be guaranteed that everything flowing in the vial is sterile?

I have never used a syringe filter so IDK.

The oil, syringe, and needle should always be sterile (if your goal is harm reduction). Ditto with the bac water you use for peps. You’re injecting this stuff into yourself after all. Unless you’re the reusing needles kinda guy, in which case just use tap water, olive oil, and send it.

 

[Ghoul]

Mr. Ghoul those are unsterile

They offer sterile and unsterile filters. I was linking to the site, not the specific product.

Sterile 0.2 μm PES Syringe Filters

Hydrophilic PES syringe filters with single or double-layer membrane. Pore sizes of 0.2μm. Diameter of 13mm/25mm/33mm with Luer lock. Sterile individually packed.

shop.cobetter.com

Suggest foregoing the prefilter version, it's unnecessary and likely wastes some peptide.

 

[Dirthand]

Seriously asking, does it truly matter if the syringe filter itself is sterile?

On one end of the filter you connect it to the syringe tip containing non-sterile fluid.

On the other end you have a sterile needle poking into the vial's rubber stopper.

So long as the fluid goes through the filter and into the needle wouldn't it be guaranteed that everything flowing in the vial is sterile?

I have never used a syringe filter so IDK.

The filter is what does the sterilization.. so if you ard filtering with a non steril vial the only thing you are doing is catching debris.. not sterilization

 

[Dirthand]

They offer sterile and unsterile filters. I was linking to the site, not the specific product.

Oh I looked at there site and did not see the sterile optio... imma look again!! I looked again and the only ly sterile options for the syringe filters are in pes and pvdf

 

[dontletheoldmanin]

Ok found something thats sterile

 

[mok4315]

I will say that if you are just filtering smaller amounts.. like a kit is make sure and get the 25mm diameter.. the 33 would be rate to filter a larger volume but it will hold more of you product.. I mean you can clear it out with pushing air thought it. Ut I don't lije doing that

For the primo, I use 25mm because I dilute with MCT. I might have just one vial, but I divide that into 5 vials and between filtering the primo and USP MCT, I think I need the 25mm.

 

[Humble-Beast]

Best deal I've found for sterile.

 

[mok4315]

Ok found something thats sterileView attachment 310442

Don’t know if you specified up above somewhere, but keep in mind that PES is for peps and PTFE is for oils.

 

[dontletheoldmanin]

Well im happy enough of us were here for this conversation, ive always read about using filters but never had an urge to.
Guess this might be a sign to do for all gear

 

[Dirthand]

They have both options on that website

Only in the pvdf and pes option

 

[BamaCrazy]

Best deal I've found for sterile. View attachment 310444

I think that’s the brand Dirthand had issues with

 

[Dirthand]

Ok found something thats sterileView attachment 310442

If for peptides that would work but you do not use pes membrane for gear.. also for peps you would want to use 12mm diameter i would think

 

[Ghoul]

If you're not too concerned about budget and just want the best, you should be looking at Pall brand filters, and specifically for peptides, ones using the "Supor" membrane, which is a superior type of PES filter.

The "Pharmassure" line is the ultimate, and the gold standard used by compounding pharmacies and big pharma researchers.

It's my preferred filter, the main advantage being a much higher flow rate and more accurate filtration (more precise holes in the membrane).

I buy them from a scientific surplus company that scoops up excess supplies from completed research projects. That said, from a safety standard, pretty much any brand will do what you need it to.

https://shop.pall.com/INTERSHOP/web/WFS/PALL-PALLUS-Site/en_US/-/USD/ViewProductAttachment-OpenFile?LocaleId=&DirectoryPath=pdfs%2FMedical&FileName=11-4804_PharmAssure_SS.pdf&UnitName=PALL

 

[Dirthand]

Best deal I've found for sterile. View attachment 310444

Yes and it's also pvdf.. which will work for gear containing less than 20% bb.. for gear from best compatibility to worse:
PTFE
NYLON
PVDF (LAST RESORT)

 

[Dirthand]

I

The oil, syringe, and needle should always be sterile (if your goal is harm reduction). Ditto with the bac water you use for peps. You’re injecting this stuff into yourself after all. Unless you’re the reusing needles kinda guy, in which case just use tap water, olive oil, and send it.

Have a buddy that will reuse needles.. that shit bothered the hell outta him. I give him needles for free ( I have a 3-4 years supply)

 

[MissedArmDay66]

Only in the pvdf and pes option

If you look at PTFE and go to order page you can select “sterile” as an option