Page 10 - Shimadzu Renewable Fuels Industry

Simple Quantitative Measurement of Micro Algae in Water

In studying micro algae, measurement of the daily growth (concentration) is important. Currently, this measurement
is conducted by the dry weight method, in which the sample is filtered using filter paper, and then dried prior to
weighing. However, a simpler, faster method is being sought to replace this time-consuming dry weight method.
Introduced here is Shimadzu’s newly developed UV micro algae analysis system, which permits simple measurement
of the micro algae concentration using a spectrophotometer. Measurement of a single sample can be accomplished
very quickly in about one minute using a disposable screw-cap vial (or disposable cell).

R%
50.0
100 % (Undiluted solution)

40.0

30.0

20.0

10.0

0.0 0 %(Pure water)
500.0 600.0 800.0 1000.0 1200.0 1400.0
nm Reflection Spectra of Micro Algae in
Disposable Vials

Shimadzu UV-2600 Spectrophotometer
Features

• High precision spectrophotometer capable of measuring
reflectance, transmittance, and so on, for a wide variety of
samples - not only liquids, but also solid samples.
• High cost performance and can be used for a wide variety of
analyses, including organic and inorganic compounds, measuring
optical material characteristics
• Though the exterior is compact, it offers a large sample
compartment able to easily accommodate a wide range of sample
shapes.
• Attaching an optional integrating sphere extends the UV-2600
wavelength measurement range to include the near infrared
region, from 220 nm to 1400 nm.

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