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  • #1225564
  • Sigma Chemical Company #A6926-100TAB
Chemistry Reagent 3-Amino-9-ethylcarbazole Chromogenic Substrate 100 Tablets
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  • #1172456
  • Sigma Chemical Company #T5525-50TAB
Chemistry Reagent 3,3',5,5'-Tetramethylbenzidine (TMB) Chromogenic Substrate Proprietary Mix 1 mg
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  • #1026217
  • Sigma Chemical Company #T0440-1L
Chemistry Reagent 3,3',5,5'-Tetramethylbenzidine (TMB) Chromogenic Substrate pH 3.35 to 3.75 1 Liter
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  • #1026216
  • Sigma Chemical Company #T0440-100ML
Chemistry Reagent 3,3',5,5'-Tetramethylbenzidine (TMB) Chromogenic Substrate pH 3.35 to 3.75 100 mL
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