Hi, Bill and others:

I had tried very hard to locate the manufacturer of W-85 without success. Can
you or anybody else help?

Dachun Zhang
Isotope Lab
Zymax

Bill Showers wrote:

> Isotopers,
>
> We have obtained some atm NH3 samples collected on a denuder system that
> were washed off the glass traps with dilute sulfuric acid (pH ~ 1.5).  In
> the past we have used W-85 to take up NH4 from dilute HCl, has anyone tried
> to use W-85 ion sieve in dilute sulfuric acid or is there another technique
> to measure the N-15 in NH4 trapped in sulfuric acid?
>
> Bill
>
> ----------------------------------------------------------
> William J. Showers
> Dept. of Marine, Earth, & Atm Sciences
> 1125 Jordan Hall
> North Carolina State University
> Raleigh, NC  27695
>
> (919) 515-7143 - voice
> (919) 515-7802 - fax
> [log in to unmask] - email
>
> "An optimist thinks that this is the best possible world. A pessimist
> fears that this is true."
>
> or
>
> "People will accept your ideas much more readily if you tell them that
> Benjamin Franklin said it first."