tipper
Former Member
Seeker -
Source for Baden using tap water is page 27 "Dead Reckoning "
"Collecting samples from this body requires a rape kit, which contains tubes for fluid collection, envelopes for scrapings and hair, and swabs with corresponding containers to protect them from contamination. After a swab is used it is suspended in a cardboard box that holds it firmly so that nothing touches the tip. Tiny envelopes hold individual hairsm fingernails, fibers. Vials hold blood or urine.
While DNA must be preserved dry to avoid deterioration, swabs may have to be wet in order to pick up such evidence. Then they have to be dried, preserved and analyzed. A lot of medical examiners insist on using distilled water to moisten swabs. They don't want any contamination of foreign substances. I think its a little silly. Tap water is fine. There's lots of stuff in city water, but sperm isn't one of them. And right now we're swabbing for sperm."
It appears maintaining a sterility is a matter of personal preference. So perhaps the morgue Seeker was in felt it was important, others don't seem to place a great deal of emphasis on it. I noticed one of the links mentioned thoroughly cleaning tools between collection locations at the crime scene but didn't say they must be sterile.
Source for Baden using tap water is page 27 "Dead Reckoning "
"Collecting samples from this body requires a rape kit, which contains tubes for fluid collection, envelopes for scrapings and hair, and swabs with corresponding containers to protect them from contamination. After a swab is used it is suspended in a cardboard box that holds it firmly so that nothing touches the tip. Tiny envelopes hold individual hairsm fingernails, fibers. Vials hold blood or urine.
While DNA must be preserved dry to avoid deterioration, swabs may have to be wet in order to pick up such evidence. Then they have to be dried, preserved and analyzed. A lot of medical examiners insist on using distilled water to moisten swabs. They don't want any contamination of foreign substances. I think its a little silly. Tap water is fine. There's lots of stuff in city water, but sperm isn't one of them. And right now we're swabbing for sperm."
It appears maintaining a sterility is a matter of personal preference. So perhaps the morgue Seeker was in felt it was important, others don't seem to place a great deal of emphasis on it. I noticed one of the links mentioned thoroughly cleaning tools between collection locations at the crime scene but didn't say they must be sterile.