Instrument: Spectrophotometer

Instrument Short Name: Spectrophotometer
(http://vocab.nerc.ac.uk/collection/L05/current/LAB20/)
Instrument Description:

An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.

PI supplied instrument name: Spectrophotometer
Dataset-specific description

Residual P was estimated using the spectrophotometric method with a Barnstead/Turner SP-830 spectrophotometer at wavelength of 885 nm.