Dear list,

Some colleagues are trying to convince to work on plants by marking them 
with fertilizers. They explained me that find several options in the 
webpage they checked:
AMMONIUM NITRATE (NITRATE-15N, 10%)
AMMONIUM NITRATE (NITRATE -15N, 98%)
AMMONIUM NITRATE (AMMONIUM-15N, 10%)
AMMONIUM NITRATE (AMMONIUM-15N, 98%)
AMMONIUM NITRATE (15N2, 10%)
AMMONIUM NITRATE (15N2, 98%)
AMMONIUM SULFATE(15N2, 99%)
AMMONIUM SULFATE(15N2, 10%)

Since they do not use to work with isotopes and I do not use to work 
with this type of products I am worried about how to manage that 
experimental work (and the later analysis). They provide me with this 
web: http://www.isotope.com/#
Anybody out there with experience in this kind of works could help me?. 
I would need which procedure is more convenient to mark the plants, 
formulations, etc. I do not know if there are other webs providing this 
kind of materials since they seems to be expensive.
Any advice would be wellcome.

Best,

José Manuel


-- 
José Manuel Moreno Rojas, PhD
Full-Time Researcher
Head of the Department of Food Science and Health
IFAPA Centre "Alameda del Obispo"
Avda. Menéndez Pidal, s/n. 14071 Córdoba, Spain.
tel.: +34 671532758 (632758); fax:  +34957016043
email: [log in to unmask]
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ORCID: 0000-0002-9372-1346
ResearchID: C-8399-2015