Hi Paul,
              I also use BN as diluting medium for pellet preparation (150-200 mg BN for 13 mm diameter solid pellets), also for air sensitive samples.
It should not absorb much water and you can dry it under vacuum, if you want to be sure that it is totally anhydrous.
As air-tight, low X-ray-attenuating bag, I use pouch foil (for coffee bag battery test cells, the one with the thinnest Al layer).
You can seal the pouch foil under low vacuum also to monitor where you pellet is. It should be virtually air tight for weeks (it depends on how thick the sealing margin is, air slowly permeates through the sealing plastic, the thickest, the slowest the permeation).

Best regards,
		Michele

 

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From: ifeffit-request@millenia.cars.aps.anl.gov <ifeffit-request@millenia.cars.aps.anl.gov> 
Sent: Thursday, 27 February 2025 03:13
To: ifeffit@millenia.cars.aps.anl.gov
Subject: Ifeffit Digest, Vol 280, Issue 1

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Today's Topics:

   1. Water-free binder advice (Paul Aronstein)
   2. Re: Water-free binder advice (Otal Eugenio)


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Message: 1
Date: Wed, 26 Feb 2025 15:10:32 -0800
From: Paul Aronstein <paul@easyxafs.com>
Subject: [Ifeffit] Water-free binder advice
To: ifeffit@millenia.cars.aps.anl.gov
Message-ID:
	<CANQHo=62KwdbKt0JqytguE2x2mrbBG37CodnbRFY5T9a01CYaA@mail.gmail.com>
Content-Type: multipart/alternative;
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Hello,
I'm looking for some advice on binder alternatives for preparing either pellets or packed powder samples in a dry glovebox. Please also note if the binder requires preparation (i.e. desiccated prior to use, etc) or if there are other considerations.

Thank you,
-Paul
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Message: 2
Date: Thu, 27 Feb 2025 11:11:55 +0900
From: Otal Eugenio <eugenio_otal@shinshu-u.ac.jp>
Subject: [Ifeffit] Re: Water-free binder advice
To: XAFS Analysis using Ifeffit <ifeffit@millenia.cars.aps.anl.gov>
Cc: Paul Aronstein <paul@easyxafs.com>
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	<CAEzOxfgfnU-27e8K68sNYsGo3qWMfwg0dFnP_XmbFPPX3tc_1g@mail.gmail.com>
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	boundary="000000000000eb9bd3062f163846"

Hi Paul,
normally I use BN and I leave it in the dry box.
I prepare these bags outside the glovebox.  I seal them on the sides to place the pellet more easily and seal the open side inside the glovebox.
I do not enjoy the glovebox time, so I prefer to prepare all I can outside and minimize the time working there.
Best regards.


[image: 81f89be0-980e-4247-92dc-2bdc07d970ba.jpg]





On Thu, Feb 27, 2025 at 10:57 AM Paul Aronstein via Ifeffit < ifeffit@millenia.cars.aps.anl.gov> wrote:

> Hello, I'm looking for some advice on binder alternatives for 
> preparing either pellets or packed powder samples in a dry glovebox. 
> Please also note if the binder requires preparation (i. e. desiccated 
> prior to use, etc) or if there are other ZjQcmQRYFpfptBannerStart This 
> Message Is From an External Sender This message came from outside your 
> organization.
>
> ZjQcmQRYFpfptBannerEnd
> Hello,
> I'm looking for some advice on binder alternatives for preparing 
> either pellets or packed powder samples in a dry glovebox. Please also 
> note if the binder requires preparation (i.e. desiccated prior to use, 
> etc) or if there are other considerations.
>
> Thank you,
> -Paul
> ifeffit mailing list:
> https://millenia.cars.aps.anl.gov/mailman3/lists/ifeffit.millenia.cars
> .aps.anl.gov/ to unsubscribe, send mail to 
> ifeffit-leave@millenia.cars.aps.anl.gov
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