For the presumptive idenfication of semen in stains, a test is used that is indicative for the presence of an enzyme (acid phosphatase) that is present in semen in relatively high concentrations. To test a stain in textile material, a small piece of textile (a few square millimeters) is cut out. This is moistened with water or physiological saline solution and then laid on the exposed test strip. A violet color is indicative for the presence of semen.

For more information on its use, see the product information section.

Cat. No. M-40400
Phosphatesmo KM, package of 25 test strips (15 x 30 mm).
 

For the sampling of biological materials like blood, saliva, etc., cotton swabs in tubes are used. When the material has dried, the cotton is first wetted with water (distilled or demineralized) before sampling. To avoid microbial degradation of the sample, the cotton must be completely dry before the swab is replaced in the tube. A time-saving alternative is to cut off a part of the tip of the tube, enabling the swab to dry during transport and storage.

Cat. No. F-63000
Cotton swab (sterile, 13 cm long, shaft fitted in the cap) in a sealed plastic tube. The tube is labelled.

Cat. No. C-29000
Scalpel handle, stainless steel (including the scalpel: 15.5 cm long).

Cat. No. C-30100
Scalpel blades, for scalpel handle C-29000, 100 in a cardboard box. These sterile scalpel blades are individually packaged in sealed foil.