The NuPAGE MES SDS Buffer Kit is designed for separation of small- to medium-size proteins on NuPAGE Bis-Tris gels and includes the following buffers: • NuPAGE MES SDS Running Buffer (20X, 500 mL, Cat. No. NP0002) • NuPAGE Sample Reducing Agent (10X, 250 μL, Cat. No. NP0004) • NuPAGE Antioxidant (Cat. No. NP0005) • NuPAGE LDS Sample Buffer (4X, 10 mL, Cat. No. NP0007)