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Sample vials ROTILABO® with fine thread ND18 Unit:100 to yield a chinoid structure N1092180 100 to yield a chinoid structure of intense blue color 352 and 354 are high purity filter papers suitable for routine quantitative gravimetric techniques and in the preparation of samples for use in the analysis involving instrumental techniques Material: borosilicate glass from hydrolytic class I vials are packed in a clean room under class 10 000 conditions
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