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Dear All,

I am doing some 15-N work with ammonium and would be happy if
any one had some tips with one or two points that are concerning
me.

1) Washing glassware:

Acid or weak alkali rinse?

I normally do an acid rinse in the washing machine but this seems
like a poor thing to do with NH4+, any thoughts?



2) Baking KCl to remove NH4+:

How long and what temperature?

One or two people I have chatted with have suggested that baking
the KCl could reduce my blanks (I work in soils) but I have yet to
find a reference or method.



Many thanks for your time.


Yours


Andrew





Dr A.M.Johnston
DSPE
Scottish Crop Research Institute
Invergowrie
Dundee
DD2 5DA
Scotland

Tel No: (44) 1382 562731 ext 3732
Fax No: (44) 1382 562426

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