Below is an example of description of a process. Rewrite this process into technical instructions. TAKING A BLOOD SAMPLE Taking a blood sample is a procedure by means of which blood is removed from the patient for analysis.  It should be done by a nurse or other trained medical practitioner so that infection may be avoided. Before the sample, the nurse should have a tourniquet, some cotton soaked with alcohol, a needle and a syringe.  There are two steps in taking the sample:  preparing the patient and drawing the blood. The tourniquet is placed on the patient’s arm about three inches above the elbow. The patient is requested to make fist with the arm extended.  The vein, which protrudes because of the tourniquet, can be located with a finger.  The area around the vein should be wiped with cotton ball soaked with alcohol. The needle which has been inserted into the syringe is carefully injected into the vein.  Care should be taken not to pass completely through the vein.  The plunger of the syringe is pulled back until the required amount of the blood has been taken.  The tourniquet is then loosened.  A cotton ball soaked with alcohol is placed over the needle and the vein as the needle is pulled out.  The patient is told to bend the elbow in order to prevent unnecessary bleeding.  The blood is placed in a test tube labelled with the patient’s name. This method of taking blood is relatively painless and is recommended when a substantial quality (more than a drop) of alcohol is required.