Whatman® 25 mm GD/X Syringe Filters

**cj1capp** · 10-06-2006, 04:46 PM

Whatman® 25 mm GD/X Syringe Filters are these able to process oil based items. thanks

**cj1capp** · 10-06-2006, 07:15 PM

still asking

**LatinoPR** · 10-06-2006, 07:19 PM

If is the green long filter is a crap,it make a mess,go with the regular round filter .45.

**mkrulic** · 10-06-2006, 07:32 PM

what do you mean by process? do you mean clean up that ip stuff?

**almostgone** · 10-07-2006, 03:42 PM

Originally Posted by cj1capp

Whatman® 25 mm GD/X Syringe Filters are these able to process oil based items. thanks

You want PVDF or PTFE filter media. The reason for this is that some media are incompatible with BA or other solvents.
There may be some info in the lab on this.

AG

**cj1capp** · 10-08-2006, 10:14 AM

Originally Posted by almostgone

You want PVDF or PTFE filter media. The reason for this is that some media are incompatible with BA or other solvents.
There may be some info in the lab on this.

AG

THANKS ALMOSTGONE
AND HOW IS THIS FOR PRICE FOR A TEN PACK = $40

You know better

Gsxxr

**fLgAtOr** · 10-08-2006, 11:35 AM

I like .22's better than .45s, personally

**cj1capp** · 10-08-2006, 11:37 AM

Originally Posted by fLgAtOr

I like .22's better than .45s, personally

ARE THE .22 USED FOR WATER BASED ?AND HOW ABOUT THE PRICE ANY CHEAPER OUT THERE.

**fLgAtOr** · 10-08-2006, 11:39 AM

No. They should be exactly the same except with a smaller pore size.

Typically, I see them for $5 a piece. So anything under that is pretty good.

**cj1capp** · 10-08-2006, 11:40 AM

Originally Posted by fLgAtOr

No. They should be exactly the same except with a smaller pore size.

Typically, I see them for $5 a piece. So anything under that is pretty good.

COOL THANKS

**almostgone** · 10-08-2006, 11:44 AM

.2µ are designed for water-based product (aqueous solutions), but will work just fine for oil-based products.

AG

**cj1capp** · 10-08-2006, 11:49 AM

Originally Posted by almostgone

.2µ are designed for water-based product (aqueous solutions), but will work just fine for oil-based products.

AG

SO FOR AN OIL BASED PROJECT WHICH ONE WOULD YOU USE?
THANKS

**fLgAtOr** · 10-08-2006, 11:51 AM

Originally Posted by almostgone

.2µ are designed for water-based product (aqueous solutions), but will work just fine for oil-based products.

AG

Didn't know that...I always thought they were a little better when you don't heat your gear. Thanks.

**almostgone** · 10-08-2006, 11:53 AM

Originally Posted by cj1capp

SO FOR AN OIL BASED PROJECT WHICH ONE WOULD YOU USE?
THANKS

.2µ or .22µ PVDF or PTFE filters.

AG

**almostgone** · 10-08-2006, 11:55 AM

Originally Posted by fLgAtOr

Didn't know that...I always thought they were a little better when you don't heat your gear. Thanks.

Tha manufacturer designed them for aqueous solutions, but they are great for oil-based stuff. And due to the smaller pose size, they are superior at removing contamination.

AG

**Nordicphsyco** · 11-12-2006, 10:21 PM

I strained 2ml cottonseed oil and 5ml t 450 one through a .45 filter into a
10 ml vial. Then I strained 2ml cottonseed oil and 5ml t 450 through a .22 filter into a 10 ml vial the one filtered through the .45 remained thick,oily and
darker tinted and the one filtered through the .22 came back almost crystal clear and a thinner consistancy, injected 1 cc of that and no pain after 3 days passed, after filtering, both vials ended up with same volume...
Before,when i inj right from the sachet it was freakn painful!