Description
DFO (1,8-Diazafluoren-9-One) – High-Sensitivity Latent Print Developer
Our professional DFO (1,8-Diazafluoren-9-One) provides a high-sensitivity solution for developing latent fingerprints on porous surfaces. This chemical reagent specifically reacts with the amino acids present in body proteins. Consequently, it serves as a vital tool for forensic laboratories processing paper evidence, such as documents, letters, and currency.
Superior Sensitivity and Performance
Research consistently shows that DFO develops significantly more latent prints than other reagents. Specifically, it can produce 2.5 to 3 times more prints on paper items than ninhydrin used alone. Because of this high sensitivity, investigators often choose DFO as the primary treatment for critical evidence.
- Sequential Processing: You can use DFO in sequence with other chemicals. However, you must use DFO first to achieve the necessary fluorescence.
- Application Versatility: We supply DFO in a raw powder form, priced and sold per gram. This allows you to mix your own solution for dipping or use it in a convenient spray format.
Professional Application Process
To achieve the best results, you should saturate the paper documents by dipping or spraying them thoroughly. Once applied, you must allow the items to dry completely.
- Thermal Activation: DFO requires heat to react with the amino acids. You should heat the treated papers using a forensic oven or a dry iron for 10–20 minutes.
- Fluorescent Examination: After heating, examine the evidence using a Forensic Light Source. The resulting latent prints will fluoresce brightly, allowing you to capture high-resolution photographic evidence of the ridge detail.
Safety and Laboratory Standards
While using a hand iron for 10–20 minutes is time-consuming, it ensures the chemical reaction reaches its full potential. You should always perform this process in a controlled laboratory environment with a fume hood. Furthermore, wear appropriate personal protective equipment (PPE) to avoid inhalation or skin contact. We recommend storing the dry powder in a cool, dark place to maintain its chemical integrity.
– TCS0104
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