Amido black reacts with blood proteins to create a deep blue color change. Illuminating Latent Blood Application methods, fixatives, alternatives and new formulas for luminol Morgan Cheyne A thesis submitted in fulfilment of the requirements for the degree of Master of Science in Forensic Science, The University of Auckland, 2011 . Amido black is an effective blood reagent when latent or difficult to see blood stains are present. The forensic test is for dried or latent blood, so the reaction between the alcohol and fresh blood is necessary. Blood-Stained Porous & Non-Porous Surfaces SENSITIVE TO: Proteins in Blood ABRIDGED REAGENT SEQUENCE: 1. No.1019 Luminol Latent Bloodstain Developer , Find Complete Details about No.1019 Luminol Latent Bloodstain Developer,Luminol Latent Blood Fingerprint Developer,Luminol Latent Blood Fingerprint Developer,Luminol Latent Blood Fingerprint Developer from Other Police & Military Supplies Supplier or Manufacturer-Beijing Bulant Police Equipment Co., Ltd.

When LCV and hydrogen peroxide come into contact with the hemoglobin in blood, a catalytic reaction occurs and a blue to purple/violet reaction product occurs. 2 . The first study was performed to see how age and temperature variance would affect results for various substrates. Sometimes conditions like raining which washes the blood on friction ridges.

Forensic Light RIDGE DETAIL VISUALIZED BY: Visible chemical/stain reaction REAGENT APPLICABILITIES: Non-Porous Surfaces Blood Enhancement

Each latent blood reagent was made according to manufacturer’s specifications and was used within the suggested time frame given for optimal reactivity/chemiluminescence. In addition to iron and iron compounds, other substances can catalyze the luminol reaction. Additionally, the study only examined carpet samples and did not examine a full range of possible substrates that may be encountered, such as linoleum or wood. This Blood Identification Kit utilizes Leuco-Malachite (McPhail’s Reagent) to provide a field test for the presumptive identification of blood. US5976886A US08/948,673 US94867397A US5976886A US 5976886 A US5976886 A US 5976886A US 94867397 A US94867397 A US 94867397A US 5976886 A US5976886 A US 5976886A Authority US United States Prior art keywords fluorescin solution method blood fluorescein Prior art date 1996-10-15 Legal status (The legal status is an assumption and is not a legal conclusion. Sensitivity vs Specificity of developing Blood Fingerprints. Namely, the study did not evaluate the sensitivity of each reagent for latent blood detection. Bluestar Forensic Blood Reagent is a blood enhancement reagent whose purpose is to reveal blood stains that have been washed out, wiped off, or are invisible to the naked eye. Visual Examination 2.