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Test
analysis unique to Nagata Chaen
Analysis & Examination
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Agricultural
chemical residue analysis laboratory
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Analysis laboratory
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In
cooperation with Shimadzu Corporation, a leading manufacturer
of analytical instruments in Japan, we have set up a laboratory
equipped with analyzers to check agricultural chemical residues
in tea. We perform strict quality checks on all the materials
before shipment in order to ensure only 100% chemical-free
teas will be provided to our customers.
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Instruments used
for analysis
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Gas Chromatograph/Mass Spectrometer (GC/MS)
| ◎Model |
Gas Chromatograph GC-17A
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| ◎Analysis
method |
Mass Sspectrometer GCMS-QP5050A
Simultaneous multi-components analysis
by SIM method(a fixed quantity) |
◎Components
to be analyzed
simultaneously |
20 components (as of May,
2000) |
| ◎Analysis
ingredient |
Organic Lynn systems (CHLORPHENAPYR,
DDVP, etc.)
Organic chlorine system insecticide
（DICOFOL・Chlorothalonil etc.）others |
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Instruments used for analysis
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Gas Chromatograph/Mass Spectrometer
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| [Gas Chromatograph/Mass Spectrometer] |
| The solution of extracted tea components injected into
Gas Chromatograph is separated into each component (such
as a chemical and a vitamin). Molecular ions of each separated
component are detected by Mass Spectrometer and the components
are specified based on thus obtained data. |
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| [SIM (Selected Ion Monitoring) method] |
| SIM method selectively detects the ions characteristic
to agricultural chemicals and analyzes them with high sensitivity. |
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