UMES- Disadvantages ◆ Noise Electrochemical Fouling ◆ Analyte Method of electrode prep'n(epoxy) Stray capacitance ◆ Impurities ◆ Maintenance ◆Cost ◆ fragile constructionUME’s - Disadvantages  Noise  Electrochemical Fouling  Analyte  Method of electrode prep’n (epoxy)  Stray capacitance  Impurities  Maintenance  Cost  Fragile construction