Sper Scientific Dissolved Oxygen Pen, 0 to 20.0 mg/L Range, 0.1 mg/L Resolution, +/- 0.4 Percent mg/L Accuracy, 32 to 122 Degree F, 2\ Length x 1-1/2\ Width x 8\ Height
- Black oxide powder for developing latent (non-visible) prints on nonporous surfaces such as painted wood, metal, and most plastics.
- Black color enhances contrast with light-colored surfaces.
- Adheres to oily or moist deposits, particularly sebaceous secretions that may contaminate the fingertips.
- Produces optimal results on newer prints found on dry, smooth, non-adhesive surfaces.
- Jar contains a 2oz. (59mL) volume of powder.