Short Answer 
To measure 0.25 ml using a syringe, first hold it upright with the plunger pushed down. Then, insert the needle into the liquid and gently pull the plunger back until the liquid reaches the 0.25 ml mark, confirming the measurement before use while adhering to safety precautions.
Step 1: Prepare the Syringe
Start by holding the syringe upright, ensuring that the needle is pointing upwards. This position helps prevent any liquid from escaping. Next, make sure that the plunger is pushed all the way down to the bottom of the syringe, which makes it easier to draw the liquid accurately.
Step 2: Draw the Liquid
Place the tip of the syringe into the liquid you wish to measure. With a gentle motion, slowly pull back on the plunger, allowing the liquid to flow into the syringe. Keep an eye on the measurement markings on the syringe and stop pulling once the liquid reaches the 0.25 ml line.
Step 3: Confirm and Use
Before using the measured liquid, double-check the level to ensure that it accurately reflects 0.25 ml. Once confirmed, carefully remove the syringe from the liquid. Be sure to follow all safety measures while handling syringes and needles to avoid any potential hazards.