1 Wipe away the first drop of blood with a piece of clean, dry cotton gauze. 2  Since newborns do not often bleed immediately, use gentle pressure to produce a rounded drop of blood. 3  Do not use excessive pressure because the blood may become diluted with tissue fluid. 4  Fill the required microtainer(s) as needed.
You'll likely see labels like THHN or THWN written on the wire. For example, THHN wire stands for thermoplastic high heat-resistant nylon coated wire. THWN stands for thermoplastic heat- and moisture-resistant nylon coated wire. As you can see, these wires are built to take on many different conditions.
THWN Electrical Wire. THWN Wire is a type of electrical wire most commonly used in conduit and cable trays for services, feeders and branch circuits in commercial applications. It can be used outdoors because it's water, gas and solvent resistant thanks to its PVC/Nylon insulation.f our wire was simply THHN rated then it would not be water resistant, however all of our single conductor THHN electrical wire is Tri-rated for THHN, THWN and MTW. It's a stranded or solid bare copper wire with a PVC insulation over it.