Chemical test kits for indicating the presence or absence of toxins for laboratory or research use; chemical and biochemical reagents for non-medical purposes for indicating the presence or absence of toxins; chemically treated non-medical test strips for indicating the presence or absence of toxins

'absenc':9,31,46 'biochem':19 'chemic':1,17,34 'indic':5,27,42 'kit':3 'laboratori':13 'medic':24,38 'non':23,37 'non-med':22,36 'presenc':7,29,44 'purpos':25 'reagent':20 'research':15 'strip':40 'test':2,39 'toxin':11,33,48 'treat':35 'use':16

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