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.
Electrical Wire Lettering. Timothy Thiele. Understanding electrical wire lettering will help you decide which type wire is best for the installation that you are using. There are many different types of insulation used for residential use.Some of the most commonly used are THHN, THWN, THW and XHHN. THWN is flame-retardant and heat resistant.lectrical Wire Lettering. Timothy Thiele. Understanding electrical wire lettering will help you decide which type wire is best for the installation that you are using. There are many different types of insulation used for residential use.