Preval Sprayer ruler This allows photographic techniques to

This allows photographic techniques to be used in the recording of  shooting scene reconstructions

(colours may vary)

carpeting or any metal surface

and chemical tampering cause bleeding and staining

Preval Sprayer ruler This allows photographic techniques toThis sprayer is great for a fine mist application of a variety of liquids. Each 6 oz. glass jar comes with a lid for ease of storage when liquid remains. When the power unit is depleted, simply add a new unit and continue spraying. Power units and glass jars can be purchased separately or as a kit. This product works very well for applying amino acid, dyes and blood reagents to various substrates.