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"SDN:L05::LAB48" .
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"Instruments that measure isotopic ratios using an electron ionisation source. Atoms in purified samples are ionised using a beam of electrons under vacuum. Subsequently, ions are focused into a beam by an electromagnet and then separated into individual beams based on their mass/charge ratio."@en .
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"isotope ratio mass spectrometers"@en .
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"accepted"@en .
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"IRMS" .
"IRMS"@en .
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