Getting the last bit of gear out of a whatman

[Bender83]

I've read that when filtering your gear with a whatman, the last 1-2ml of gear will be "trapped" in the filter, and that you need to run 1-2ml of just oil through the filter to get the last of your gear out.

I have also read that if you have an air bubble behind your gear in the syringe, that the air bubble will push out your remaining gear and you won't have to run some extra oil through.

The second option makes sense to me but I want to be sure before I go and do this, and wind up needing some extra oil that I don't have.

Thanks guys!

 

[MythotiK]

I just ran extra oil behind mine

 

[fightingfires]

I tried air but it seems to tunnel through if that makes any sense and you still end up with the 1-2 mils trapped. Oil seemed better. You still get the 1-2 mils left in but it is just empty carrier oil

 

[IronBrothers]

Just use fresh oil. Lets say you hook a watman up to a 10ml syringe. When you start pushing that 10ml through, watch how much oil it takes to fill up your specific filter before the first drop comes out of the needle side. Use that ammount when flushing with fresh oil, and you should have MOST of the hormone that was trapped, flushed out.

 

[kaizoku]

Use oil, figure out how that changes the mg/ML, and increase the amount in your pins appropriately.

Just did this with some test prop I was running and had almost no PIP.

 

[Bender83]

Thank you for the replies, I'll get some oil and run it through.

http://www.amazon.com/Now-Foods-Grape-Seed-Ounce/dp/B000J41AH4/ref=sr_1_5?ie=UTF8&qid=1433210380&sr=8-5&keywords=grapeseed+oil

Gear was brewed w/ grapeseed oil, so this is what I'd need right? Just suck up what I need and run it through after the gear.

 

[kaizoku]

That's what some do.

I ordered sterile MCT from txlabsupply and used that, then just heated and swirled the vial around before pinning.

 

[Bender83]

I'm just going to get whatever oil the gear was brewed with, which I think is grapeseed. Main reason I linked the NOW foods brand is that they have a small 4oz bottle that I can probably get local from some health food store.

Last question guys. All I need to do is draw up the oil I need and run it through behind my gear right? I don't need to bake the oil, or add any BA to it, or anything else right? It should come out of the business end of the whatman sterile and safe to use correct?

 

[fightingfires]

ignore this post.....answered a question that wasnt quite what was asked

 

[Bender83]

ignore this post.....answered a question that wasnt quite what was asked

NP man, but do you have any insight on my post above?

 

[fightingfires]

Well the volume of new oil will be so small you should be fine...no BA needed. There should already be more than enough in the parent solution

 

[Bender83]

Well the volume of new oil will be so small you should be fine...no BA needed. There should already be more than enough in the parent solution

When you say that "the volume of new oil will be so small you should be fine". I wonder then at what point would additional BA become necessary. Say someone was doing what I am doing but was adding in more oil to cut their gear say to reduce pip.

 

[fightingfires]

lets say you had 10mls of gear and wanted to cut it by 50% by adding 10 more mils.
if the gear only came with 1% BA then the additional oil alone may drop it to .5% which "may" not be sufficient to keep the gear from growing contaminants.
In that case possible adding 1% more BA would not hurt.
BUT......without knowing the original amount of BA...you could be adding too much if the original gear had say 5% BA already.
its kind of a crap shoot if you do not know how much BA was in the gear originally

 

[Bender83]

lets say you had 10mls of gear and wanted to cut it by 50% by adding 10 more mils.
if the gear only came with 1% BA then the additional oil alone may drop it to .5% which "may" not be sufficient to keep the gear from growing contaminants.
In that case possible adding 1% more BA would not hurt.
BUT......without knowing the original amount of BA...you could be adding too much if the original gear had say 5% BA already.
its kind of a crap shoot if you do not know how much BA was in the gear originally

Thank you for the explanation!

 

[fightingfires]

If I had to make a safe guess I would go with adding 1% BA. Meaning 1% of the new added oil. The gear "should" have some already in it. Adding 1% will keep the new oil safe and the gear will have whatever it already happens to have in it.

like I said its all a crapshoot but you should be safe with that amount

 

[Bender83]

If I had to make a safe guess I would go with adding 1% BA. Meaning 1% of the new added oil. The gear "should" have some already in it. Adding 1% will keep the new oil safe and the gear will have whatever it already happens to have in it.

like I said its all a crapshoot but you should be safe with that amount

I think after taking the info in and thinking about it, I will be OK without adding the BA. Here is why I think that.

In theory, none of the ~2ml of oil that I run through the whatman filter to push out my remaining gear will make it into my vial. In the real world, I am sure that some will. So lets say that even as much as 1ml of new oil manages to make it's way into the gear, the amount of BA needed to keep a concentration of 1% is pretty tiny. 1ml x .01 = .01ml. We're talking one tick on a 1ml slin pin.

Knowing that, I think I'll be fine. If I was in fact adding a couple of ml's to cut my gear, then I'd add in the BA, but for the tiny amount that I'm dealing with here, I think you were right when you said above that I'd be fine without it.

Lastly, I just want to be sure on this. What's your opinion on the brand of oil that I linked above? As long as it is going through the whatman, it should be just fine to use right?

Thanks man, I appreciate your help on this!

 

[fightingfires]

It should be ok.....as long as it is 100% gso and no other ingredients. And yes definitely go through a .22 whatman

 

[Big_paul]

You can push 1-2ml of oil through it, but I brew in 100ml vials, so it's not that important to me.

 

[Notits]

You should be making sure that you have an air bubble at the plunger any time you are filtering by hand anyway. It give a bit of cushion to help prevent you from rupturing the filter membrane.

 

[Bender83]

You should be making sure that you have an air bubble at the plunger any time you are filtering by hand anyway. It give a bit of cushion to help prevent you from rupturing the filter membrane.

Yes, I read about the air bubble on basskillers site when I was reading about the caulk gun method. Something like compress the air bubble 1/2 or 3/4 and then let that pressure push the oil out. Once the pressure is gone, repeat the process.