EtBr, or Ethidium Bromide, is typically a dark red color in its crystalline, powdered form.
While the powder itself is dark red, it's important to note that when EtBr is used in solution, it fluoresces a red-orange color under ultraviolet (UV) light, especially when bound to double-stranded DNA. So, its appearance can change depending on the context. In summary:
- Solid Form: Dark red
- In Solution under UV Light: Red-orange (when bound to DNA)
