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This presumptive blood test is designed to be a simple, one shot test for the presence of blood. This portable test will fit in your pocket and allows you to test suspect stains without taking the time to mix chemicals. Simply place a small quantity of the stained material, or a portion of a swabbing of the stain, into the kit and crush the color-coded vials in sequence. Their formulation has long been accepted by the courts and proven in the field. This kit will automatically let you know if it has expired, thus minimizing the chance of a negative reading. > More

Phenolphthalein is one of the most commonly used chemicals in the field and laboratory to indicate the presence of blood. Our pre-packaged kit contains all the reagents and supplies to conduct a presumptive blood test. There is a “known” sample to let the user know the kit is working. Packaged in a plastic box. > More

Many investigators use O-Tolidine as a presuptive test after the Phenolphthalein Presumptive Blood Test. A positive presumptive result yields a blue color. Packaged in a plastic box with all the necessary premixed chemicals and supplies to conduct a O-Tolidine Blood Test. The premixed chemicals are packaged in plastic dropper bottles. A known blood standard is included to monitor the results. > More

Many investigators use this highly sensitive test as confirmatory test after the Phenolphthalein Presumptive Blood Test. A positive presumptive result yields a deep blue color. Packaged in a plastic box with all the necessary premixed chemicals and supplies to conduct a Leucocrystal Violet Blood Test. The premixed liquid reagents are packaged in plastic dropper bottles. A known blood standard is included to monitor the results. > More