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Presumptive Blood Test—Forensic Demonstration Kit

By: The Flinn Staff

Item #: FB1646 

Price: $28.97

In Stock [110 pcs available]. To view alternative items others have purchased, please see "Suggested Products" below.

The Presumptive Blood Test Forensics Demonstration Kit utilizes a simulation of the Kastle-Meyer Color Test and can be safely used in a mock crime scene investigation.

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This item can only be shipped to schools, museums and science centers

Product Details

This kit utilizes a simulation of the Kastle–Meyer Color Test and can be safely used in a mock crime scene investigation. The Kastle–Meyer Color Test is often used by crime scene investigators to presumptively indicate if blood is present on an object. For this activity, objects in your crime scene can be “seeded” to provide positive color tests for “simulated blood” when sprayed with the phenophthalein test solution. The test is fast and easy and is thus ideal for use in the first moments at a crime scene. Crime scene investigators like this test even if the results are only “presumptive” and not considered hard proof. The presumptive tests can often lead investigators in the right direction to search for additional proof. The kit contains enough materials to conduct many simulated Kastle–Meyer Color Tests on crime scene items. Comes complete with teacher background and directions. Concepts: Presumptive test, oxidation. Time Required: 15 minutes Materials Provided: Phenolphthalein solution, spray bottle, cotton cloth, filter paper, simulated blood plasma.


Materials Included in Kit: 
Phenolphthalein solution, 1%, 100 mL
Simulated blood plasma, 100 mL
Bottle, spray mist dispenser
Filter paper, qualitative, 9 cm, pkg/30

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Analyzing and interpreting data

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Cause and effect
Structure and function