Syringe Filters

FlexP

New member

• Aug 9, 2015

• #1

I've haven't used syringe filters in quite awhile, but I've been using them lately on small tester batches. I find when filling my vials ( presealed ) my vent pin is blowing bubbles and spilling out gear regardless of how fast or slow I fill the vial.. Anyone know why this is happening? Using an 18G pin..

I've also noticed that roughly 10-20ml out of 100ml batches come out cloudy or very very bubbly/air pocket filled.. Anyone know why on this one?

In either case the gear just looks like shit...

I don't like using my filtration setup on small batches but at this rate, I may have to.


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Presser

Admin

Staff member

Administrator

Moderator

• Aug 9, 2015

• #2

I've never done anything like this so i have no knowledge but i will bump this for ya

 

thx

New member

• Aug 9, 2015

• #3

If it is cloudy the chemicals are most probably dissolving the filtermaterial.

If air gets in the filter while you filter (usually happens because filter/plastic is getting dissolved , the oils is too hot or too much pressure is applied.

If you have bigger bubbles in it, then its most probably water or moisture that got in the vial or gear.

 

FlexP

New member

• Aug 9, 2015

• #4

Thanks for the feedback brother, I'll keep a better eye on a couple things the next time around..

Just odd because it's only 1-2 vials max per 10.. It's all good once I re-filter it.. Maybe I am applying to much pressure or letting to much air in..


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Powderguy

MuscleChemistry Registered Member

• Aug 9, 2015

• #5

How many filters do you use per 100mls? What kind and millipore

 

FlexP

New member

• Aug 9, 2015

• #6

I'll use 1 syringe filter per 100ml and .45 sterile.. Pdvf and they are not Whatman. I'll have to check the brand, these are just for tester batches as stated..


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I was under the impression these were good up to 100ml but please let me know if I'm wrong here as well.

 

Powderguy

MuscleChemistry Registered Member

• Aug 9, 2015

• #7

They will plug up in high volumes and then you just push the stuff out of them after they do.
.2 micron and PVFD whatman are great for all purposes. make sure you but sterile ones.
30mls per filter are good, some go higher but I never have. theres no price on quality

 

T

TheDoc

New member

• Aug 9, 2015

• #8

You can get Whatman filters for $3 even a pop online also, don't pay $5-6 each brother.

 

Presser

Admin

Staff member

Administrator

Moderator

• Aug 10, 2015

• #9

thnx and welcome to MC thedoc

 

T

TheDoc

New member

• Aug 10, 2015

• #10

Presser said:

thnx and welcome to MC thedoc

Click to expand...

Thanks, I've just been reading and reading.
I'll make an introduction thread shortly.

 

Powderguy

MuscleChemistry Registered Member

• Aug 11, 2015

• #11

Did we answer your questions in regard to syringe filters?