[tripton]

Hi everybody,
I´m looking for some organic substance that doesn´t react with a strong cationic ion exchanger (zeolite) used as catalyst support. I want to use this substance as tracer to study the flow in an experimental reactor. I will develop the experiments just with the zeolyte but without catalyst.
I must practice the experiments at pH 5 or higher.
I need some compound that can be easily measured by UV or other simple analytical method.
I also would like to use some compound easy to find in a laboratory, and relatively cheap.
I thought to use methyl orange, but I don´t know if it may reacts with the active sites in the zeolite.

Any suggestion will be welcome.

Thanks

Sergio

[mcell00]

I don't know if this will be of any help because it is not organic, but borate is of very high pH of 13 or so.  I am actually an employee at Mcell and we are looking for people who are willing to use our borate for different applications.  If all you need is a solution of high pH borate could work.