Nagata Chaen Analysis

Do you know of the fact that there are in general use a large quantity of agricultual chemicals on the tea production?

Test analysis unique to Nagata Chaen Analysis & Examination

Agricultural chemical residue analysis laboratory

Analysis laboratory

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.

Instruments used for analysis

Gas Chromatograph/Mass Spectrometer (GC/MS)

◎Model	Gas Chromatograph GC-17A
◎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

Instruments used for analysis

Gas Chromatograph/Mass Spectrometer

[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.

[SIM (Selected Ion Monitoring) method]

SIM method selectively detects the ions characteristic to agricultural chemicals and analyzes them with high sensitivity.