Standard solution

If you wouldn't mind just reading through my method to make a standard solution just to see if I have included everything that is necessary and all the safety measures:


Making a standard solution of potassium hydrogen phthalate( KHP)

Equipment

Weighing boat
spatula
Balance
Glass beaker
Distilled water
Glass stirring rod
Volumetric flask
Glass funnel
stopper/bung

Method

Calculate the mass of the Potassium hydrogen phthalate (KHP) needed on a weighing boat. Using a balance, weigh to the appropriate decimal place.
After weighing the KHP, transfer the solute into a beaker, and rinse the weighing boat with distilled water to make sure that all the solute has been transferred into the beaker.
Dissolve all the solute in the beaker with distilled water(using as much as required), then carefully stir the solution with a glass stirring rod.
Once all solute has been dissolved, transfer the solution into a volumetric flask using a glass funnel(if you spill any of the solutions, start again.).
Rinse the beaker with distilled water to make sure none of the original solution is left. Do this step around 2 - 3 times.
Rinse the glass funnel into the beaker.
Remove the funnel and place a stopper into the volumetric flask.
Gently shake the flask to assure that all the solute is mixed in the solution.
Fill the flask with distilled water up to the line on the volumetric flask(Take care to not exceed, or you will need to start again.) make sure the bottom of the meniscus is touching the line.
Place the stopper back on. Before you can use the solution you must ensure that it is homogeneous which can be done by gently inverting and shaking the flask.
We now have a standard solution.

Safety measures

KHP is an irritant and slightly acidic, so wear safety goggles throughout the experiment to avoid the chemical splashing into your eyes.
If any spills are made, clean up quickly to avoid further accidents occurring.
At the beginning and end of the experiment wash your hands to remove any chemicals that may have contaminated your hands.
Wipe down the desk with a disinfectant to ensure that no chemical splashed onto the desk.