2. Using a 4X4 gauze or tissue, slowly remove the stopper by easing the stopper up and away from you and taking care not to agitate the tube and disturb or mix the cells into the serum/plasma. 3. Using a transfer pipette, transfer the serum/plasma from the original tube into the labeled transfer (aliquot) tube. Do not get to close to the red cells at the bottom. 4. Centrifuge the transfer (aliquot) tube. 5.
Types. THHN wires come in two basic formats -- stranded and solid core. As a stranded cable, THHN is available in sizes from 14 awg to 750 kcmiL, and as a solid cable in sizes 14 to 10 awg.It is generally manufactured in copper or aluminum.ave. Window framed with wires & tube image by diter from Fotolia.com. THHN stands for thermoplastic high heat-resistant nylon coated. This is a type of insulated electrical wire suitable for a variety of low-to mid-voltage applications and can safely handle a load of up to 600 volts.
Now, one of the old guys! In PLC work NPN means the sensor or switch connects to the negative of the power supply. When the sensor is made up it connects the plc input to the negative and makes up the PLC input point. The PNP is the same except it connects the PLC input to the positive side of the supply. In most of my plc work we use NPN type sensors.