Detecting semen can be done a few ways. Online kits use a liquid to expose semen as a different color. Although these kits are accurate, they can be expensive, especially if you are testing multiple articles of clothing. Each kit yields results for five to 10 articles of clothing. A less-expensive but still accurate method of detecting sperm is a black light. A black light uses ultraviolet rays to detect fluorescent materials, including sperm.
Buy a black light. You can find relatively cheap black lights at most department or home supply stores. You should be able to find a black light for $5 to $10.
Gather the clothes that you will be investigating. Look for stains on them that you can see with your naked eye first to determine which spots you should take a closer look at.
Scan closely the clothes you have gathered. Hold the light about six inches from the clothing and move it slowly across the piece entirely, focusing especially on the spots that seemed to be present before to your naked eye.
Observe the clothing. Semen will show up as a light yellow color when scanned with a black light. This should give you an answer as to whether semen is on clothing or not.
How Does Ultraviolet Light Affect ...
How to Get Lint Off a Black Fleece ...
How to Get Rid of Rust Stains in White ...
How to Dye Clothes Black With a Sharpie
How to Take Out Scratches From Silver ...
How to Get Rid of Yellow Age Spots on ...
Care Instructions for Voile Fabric
How to Darken Faded Black Leather
How to Wash Clothes Affected by Smoke
How to Get Skinny Jeans to Be Less Tight
How to Avoid Deodorant Marks
How to Clean Rock Salt Stains From Pants
What Color Clothes Makes Brown Eyes ...
How to Restore Black Suede
How to Get Silly String Out of Fabric
How to Keep Glitter in Clothing From ...
How to Get Mold & Mildew Stains Out of ...
How to Make Toasted Bread Sticks With ...
How to Paint Clothes Silver
How to Make Black Hair Look Natural
- This should only be tried on clothes that have been washed, as semen will remain on materials that have been washed. Substances that are oil-based can show up under a black light as the same pale-yellow color, so make sure the clothes have been washed at least once if you want to be sure.
Josh Repka has had honors bestowed on him throughout his academic experience, and has received recognition for his works in the field of English, Writing and Literacy. He has been writing since 1999. He received a Bachelor of Arts in philosophy, with a minor in literature from Ave Maria University. He has been published on eHow.com and Travels.com