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: Spectorphotometer
Dataset-specific description

Biogenic silica samples (200 mL) were filtered through 0.4 µm 25-mm PCTE filters and then dried at 60°C prior to storage. Samples were digested in 0.2 M NaOH and quantified spectrophotometrically.