filter setup idea

[amicedrot]

so im thinking for filtration i can use this glass on glass set with disposable ptfe discs. they dont seem to come pre sterile but i can put em in my friends tattoo autoclave machine when i do the glasseare and stoppers.

anyone with more experience know if this is gonna have problems im not seeing?

 

[Photon]

disposable ptfe discs. they dont seem to come pre sterile but i can put em in my friends tattoo autoclave machine

Can't be autoclaved

 

[amicedrot]

Can't be autoclaved

ahh. wouldnt be the first time ive been mislead by google. is there a known source for sterile discs?

 

[amicedrot]

Can't be autoclaved

i saw on another thread you replied to another dude with some ptfe filters and asked if he couldnt just autoclave his syringe filters with ptfe. is there a difference i should know? id thought these discs would just be pure ptfe.

 

[Photon]

i saw on another thread you replied to another dude with some ptfe filters and asked if he couldnt just autoclave his syringe filters with ptfe. is there a difference i should know? id thought these discs would just be pure ptfe.

You need to find those that can be autoclaved.

Post in thread 'Autoclave Filters'

Apr 14, 2025

PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk

Check out the deal on PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk at Tisch Scientific

scientificfilters.com

These are listed as autoclavable.

• kain

 

[amicedrot]

You need to find those that can be autoclaved.

Post in thread 'Autoclave Filters'

Apr 14, 2025

PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk

Check out the deal on PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk at Tisch Scientific

scientificfilters.com

These are listed as autoclavable.

• kain

I see what you mean. they come hermetically sealed in autoclave pouches it appears. thank you for the clarification

 

[amicedrot]

You need to find those that can be autoclaved.

Post in thread 'Autoclave Filters'

Apr 14, 2025

PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk

Check out the deal on PTFE Membrane Filters, 0.22 um, 47mm, Nonsterile, 100/Pk at Tisch Scientific

scientificfilters.com

These are listed as autoclavable.

• kain

sorry one last question since you seem to know a ton. is there a huge risk of plastic leeching from using one of those disposable ptfe bottle filter setups? im not in this to produce large large amounts, just a personal supply to weather pricing droughts and supply shortages

 

[Photon]

sorry one last question since you seem to know a ton. is there a huge risk of plastic leeching from using one of those disposable ptfe bottle filter setups? im not in this to produce large large amounts, just a personal supply to weather pricing droughts and supply shortages

Disposable PTFE bottle filter setups are made of polypropylene which is compatible with MCT, BA and BB, which is typically what we used for AAS brews. The issue is that they do not come sterile and cannot be autoclaved.

The ones that come sterile are not PTFE and are made out of polystyrene, which is not compatible.

The pharmaceutical gold standard for MCT oil is MIGLYOL 812 which is simply extremely high quality MCT. It states specifically on the spec sheet that it cannot be used with polystyrene.

(The last page - section 7)

https://marcordev.com/wp-content/uploads/2019/08/MIGLYOL_812_N_Excipient_TDSH.pdf

BA/BB which is also used in AAS brews, is also not compatible, even at 1% b.a.

 

[amicedrot]

Disposable PTFE bottle filter setups are made of polypropylene which is compatible with MCT, BA and BB, which is typically what we used for AAS brews. The issue is that they do not come sterile and cannot be autoclaved.

The ones that come sterile are not PTFE and are made out of polystyrene, which is not compatible.

The pharmaceutical gold standard for MCT oil is MIGLYOL 812 which is simply extremely high quality MCT. It states specifically on the spec sheet that it cannot be used with polystyrene.

(The last page - section 7)

https://marcordev.com/wp-content/uploads/2019/08/MIGLYOL_812_N_Excipient_TDSH.pdf

BA/BB which is also used in AAS brews, is also not compatible, even at 1% b.a.

okay so let me ask then, since i am not planning for anyone else to use my product except me since its for personal use, would you ever consider using the non-sterile version? i could leave it under Ozone UVC light for 15-20m to reduce microbes...

 

[amicedrot]

Disposable PTFE bottle filter setups are made of polypropylene which is compatible with MCT, BA and BB, which is typically what we used for AAS brews. The issue is that they do not come sterile and cannot be autoclaved.

The ones that come sterile are not PTFE and are made out of polystyrene, which is not compatible.

The pharmaceutical gold standard for MCT oil is MIGLYOL 812 which is simply extremely high quality MCT. It states specifically on the spec sheet that it cannot be used with polystyrene.

(The last page - section 7)

https://marcordev.com/wp-content/uploads/2019/08/MIGLYOL_812_N_Excipient_TDSH.pdf

BA/BB which is also used in AAS brews, is also not compatible, even at 1% b.a.

on the flip side, what if i filtered it to remove impurities, then transferred to a sterile flask and reheated? perhaps that would cause evaporation of BA and make it less effective at that point.

 

[Photon]

okay so let me ask then, since i am not planning for anyone else to use my product except me since its for personal use, would you ever consider using the non-sterile version? i could leave it under Ozone UVC light for 15-20m to reduce microbes...

Just use sterile PTFE syringe filters with a caulk gun.

Post in thread 'Filtering finished oils'

Sep 16, 2025

I posted this elsewhere, but copying it here.

Most expensive but allows you to buy 10 pc.

Tisch Scientific Filter Syringe .22μm PTFE 25mm - Sterile Individually

Brand: Tisch ScientificSpecifications & Description: Filter Medium: PTFE Diameter(mm): 25 Pore Size(μm): 0.22 Moisture level: Hydrophobic Sterile: Yes Housing Material: Medical grade PP Connections(Inlet/Outlet): Female Luer Lock inlet and Male Luer slip outlet

peptidetest.com

ONLY GET products with USA Warehouse (Tariff Exemption within U.S.)
Else it'll ship from China and you get hit with some 20-50% fee.
100 pc.

Syringe Filters with Male Luer Lock Outlet

Sterile hydrophobic PTFE syringe filters with male luer lock outlet. Pore size: 0.22μm. Diameter of 25mm. Sterile by gamma irradiation. For sterile filtration of air and gas.

shop.cobetter.com

Cheapest is AliExpress get .22 PTFE sterile Hydrophobic from KS-Tek.
Shipping took 4 days...

• Photon

• 

on the flip side, what if i filtered it to remove impurities, then transferred to a sterile flask and reheated? perhaps that would cause evaporation of BA and make it less effective at that point.

It boils at >200c.
I wouldn't even be concerned about it evaporating..

 

[amicedrot]

I think the best path is going to be sterile vials/syringes/syringe filters. i just need to find some usa domestic sterile vials with PTFE membrane or ptfe coated membranes

 

[amicedrot]

Just use sterile PTFE syringe filters with a caulk gun.

Post in thread 'Filtering finished oils'

Sep 16, 2025

I posted this elsewhere, but copying it here.

Most expensive but allows you to buy 10 pc.

Tisch Scientific Filter Syringe .22μm PTFE 25mm - Sterile Individually

Brand: Tisch ScientificSpecifications & Description: Filter Medium: PTFE Diameter(mm): 25 Pore Size(μm): 0.22 Moisture level: Hydrophobic Sterile: Yes Housing Material: Medical grade PP Connections(Inlet/Outlet): Female Luer Lock inlet and Male Luer slip outlet

peptidetest.com

ONLY GET products with USA Warehouse (Tariff Exemption within U.S.)
Else it'll ship from China and you get hit with some 20-50% fee.
100 pc.

Syringe Filters with Male Luer Lock Outlet

Sterile hydrophobic PTFE syringe filters with male luer lock outlet. Pore size: 0.22μm. Diameter of 25mm. Sterile by gamma irradiation. For sterile filtration of air and gas.

shop.cobetter.com

Cheapest is AliExpress get .22 PTFE sterile Hydrophobic from KS-Tek.
Shipping took 4 days...

• Photon

• 

It boils at >200c.
I wouldn't even be concerned about it evaporating..

lol i was just coming to this conclusion and didnt hit refresh before you replied but thank you for confirming. sounds tedious but i guess i only gotta do it once every so often to reup my supply

 

[amicedrot]

Just use sterile PTFE syringe filters with a caulk gun.

Post in thread 'Filtering finished oils'

Sep 16, 2025

I posted this elsewhere, but copying it here.

Most expensive but allows you to buy 10 pc.

Tisch Scientific Filter Syringe .22μm PTFE 25mm - Sterile Individually

Brand: Tisch ScientificSpecifications & Description: Filter Medium: PTFE Diameter(mm): 25 Pore Size(μm): 0.22 Moisture level: Hydrophobic Sterile: Yes Housing Material: Medical grade PP Connections(Inlet/Outlet): Female Luer Lock inlet and Male Luer slip outlet

peptidetest.com

ONLY GET products with USA Warehouse (Tariff Exemption within U.S.)
Else it'll ship from China and you get hit with some 20-50% fee.
100 pc.

Syringe Filters with Male Luer Lock Outlet

Sterile hydrophobic PTFE syringe filters with male luer lock outlet. Pore size: 0.22μm. Diameter of 25mm. Sterile by gamma irradiation. For sterile filtration of air and gas.

shop.cobetter.com

Cheapest is AliExpress get .22 PTFE sterile Hydrophobic from KS-Tek.
Shipping took 4 days...

• Photon

• 

It boils at >200c.
I wouldn't even be concerned about it evaporating..

hopefully this is the last time i gotta bug you about this topic, but since it seems as though the outlet side of a syringe filter is much lower pressure, can i get away with a luer slip fitting when feeding into a vial?

for the vent, should i not use a filter or valve to prevent contaminated air from entering the vial?

 

[Photon]

hopefully this is the last time i gotta bug you about this topic, but since it seems as though the outlet side of a syringe filter is much lower pressure, can i get away with a luer slip fitting when feeding into a vial?

for the vent, should i not use a filter or valve to prevent contaminated air from entering the vial?

For the filter intake id suggest LL but for the outlet LS is fine, in fact most of the syringe filters have LS outlets. The ones with LL outlets are a few times the cost.

A needle for venting is sufficient, you could use a smaller garage like 31g for venting if you're concerned. It's the same when you pierce to draw isn't it?

 

[amicedrot]

For the filter intake id suggest LL but for the outlet LS is fine, in fact most of the syringe filters have LS outlets. The ones with LL outlets are a few times the cost.

A needle for venting is sufficient, you could use a smaller garage like 31g for venting if you're concerned. It's the same when you pierce to draw isn't it?

i didnt even think about it that way but youre right, i do pump an equal volume of air into the vial before drawing oil into the syringe and it doesnt seem to affect very much. This has been quite educational. Im sure ill start other threads in the future if i dont find answers to my questions in the forum. Thanks again!