four-electrode salinity probe info required

[SČrgio Queiroz <queiroz@agr.unicamp.br>]

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I would like to obtain information about four-electrode salinity probe
products line for field research (model and cost).I need this
information urgently.
Best regard,
SČrgio Queiroz
Universidade Estadual de Campinas
FEAGRI/ Depto. ”gua e Solos
LaboratŪrio de Hidr·uliuca, IrrigaĮ“o e Drenagem
Brasil

<queiroz@agr.unicamp.br>