| CRM4M7341 | Acetone- 2,4-DNPH solution certified reference material, 1000 μg/mL in acetonitrile, ampule of 5 × 1 mL | |
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| CRM47344 | 2-Butanone-DNPH solution certified reference material, , ampule of 1 mL | |
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| 47650-U | CARB 方法 1004 DNPH 混標 1 3 μg/mL in acetonitrile (as aldehydes & ketones) | |
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| CRM47651 | CARB 方法 1004 DNPH 混標 2 certified reference material, 30 μg/mL in acetonitrile (as the aldehydes & ketones)), ampule of 1 × 1 mL | |
| |
| CRM47649 | CARB 羰基-DNPH 混合物 1 certified reference material, in acetonitrile (varied conc.), ampule of 1 mL | |
| |
| CRM47673 | Cyclohexanone-DNPH solution certified reference material, 500 μg/mL in acetonitrile (as the ketone), ampule of 1 mL | |
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| CRM48149 | EPA TO-11A 6 /酮-DNPH 混標 | |
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| CRM47564 | Glutaraldehyde-2,4-DNPH solution certified reference material, 100 μg/mL in acetonitrile (as aldehyde equivalent), ampule of 1 mL | |
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| CRM47285 | TO11/IP-6A -DNPH 混標 certified reference material, 15 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
| |
| CRM4M7285 | TO11/IP-6A -DNPH 混標 certified reference material, 15 μg/mL each component in acetonitrile (as the aldehyde or ketone), ampule of 3 × 1 mL | |
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| 442529 | 丁-2,4-DNPH analytical standard | |
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| CRM47175 | Crotonaldehyde-DNPH solution -2,4-DNPH 溶液 certified reference material, TraceCERT®, 100 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| 442504 | -2,4-DNPH analytical standard | |
| |
| CRM47345 | Butyraldehyde-DNPH solution -2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| 442441 | -2,4-DNPH analytical standard | |
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| CRM47342 | Acrolein-DNPH solution -2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| 442436 | 2,4-DNPH analytical standard | |
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| 442768 | -2,4-DNPH analytical standard | |
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| CRM47181 | Propionaldehyde-DNPH solution -2,4- 溶液 1000 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| 442434 | -2,4-DNPH analytical standard | |
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| CRM47340 | Acetaldehyde-2,4-DNPH solution 乙-2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile, ampule of 1 mL | |
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| CRM4M7340 | Acetaldehyde-2,4-DNPH solution -2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile (as the aldehyde), ampule of 5 × 1 mL | |
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| 33851 | 2,4- analytical standard | |
| |
| CRM47178 | Hexaldehyde-DNPH 2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile, ampule of 1 mL | |
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| 442614 | 2,4-DNPH analytical standard | |
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| 33848 | -2,4- analytical standard | |
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| CRM47886 | -2,4-DNPH 溶液 certified reference material, 100 μg/mL in acetonitrile, ampule of 1 mL | |
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| CRM47179 | Isovaleraldehyde-DNPH solution 2,4- 溶液 certified reference material, 1000 μg/mL in acetonitrile (as the aldehyde equivalent), ampule of 1 mL | |
| |
| 442834 | -DNPH analytical standard | |
| |
| CRM47185 | Valeraldehyde-DNPH solution -2，4-溶液 certified reference material, 100 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| CRM47180 | Methacrolein-2,4-DNPH Solution -2,4- 溶液 certified reference material, 100 μg/mL in acetonitrile, ampule of 1 mL | |
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| 442339 | -2,4- analytical standard | |
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| 442597 | -2,4-DNPH analytical standard | |
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| CRM4M7177 | -2,4-DNPH certified reference material, TraceCERT®, 100 μg/mL in acetonitrile (aas aldehyde), ampule of 5 × 1 mL | |
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| CRM47177 | Formaldehyde-DNPH solution -2,4-DNPH certified reference material, TraceCERT®, 100 μg/mL in acetonitrile (as aldehyde), ampule of 1 mL | |
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| 33852 | 癸醛 2,4- analytical standard | |
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| CRM47672 | 羰基-DNPH 混標 1 certified reference material, in acetonitrile (varied conc.), ampule of 1 × 1 mL | |
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| CRM47671 | 羰基-DNPH 混標 2 certified reference material, in acetonitrile (as aldehydes and ketones; varied conc.), ampule of 1 mL | |
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| 442469 | -2,4-DNPH analytical standard | |
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| CRM47343 | Benzaldehyde-DNPH solution -2,4- 溶液 certified reference material, 100 μg/mL in acetonitrile (as the aldehyde), ampule of 1 mL | |
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| 33849 | 2,4-analytical standard | |
| |
| CRM47032 | -(DNPH)2 溶液 certified reference material, 10 μg/mL in acetonitrile: DMSO (7:3) (as the aldehyde equivalent), ampule of 3 × 2 mL | |
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