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@scarred10 The dry paper abrades a small amount of blood from the stain. That's how test is normally used. It actually seem to work better/more quickly on dried blood than wet blood.
Man, first: h2o2 should be 3%.Second: phenolphtalein should be reduced with zinc powder.
if the stain is dry,how do you get a sample on the paper?
scarred10 moison it with sterile 0.9% normal saline first
@scarred10
The dry paper abrades a small amount of blood from the stain. That's how test is normally used. It actually seem to work better/more quickly on dried blood than wet blood.
Man, first: h2o2 should be 3%.
Second: phenolphtalein should be reduced with zinc powder.
if the stain is dry,how do you get a sample on the paper?
scarred10 moison it with sterile 0.9% normal saline first