i need answer
Bucket of Water
There is no special precaution to be taken related to sunlight in your case.
wash the pH probe with distilled water and then dry it clean with tissue paper before and after testing the pH.
As a precaution, he locked his bicycle whenever he wasn't using it. The best precaution when using paint is to have adequate ventilation. Wearing a heavy jacket is a sensible precaution when riding a motorcycle.
the safety precaution in using simple machines is to use it in a safety hand
Nothing much really. Just don't touch the flame, wear goggles and that's all. Using a safety mat is unnecessary and it doesn't really matter if you keep the airhole at the base open or closed.
Iodine solution is toxic if ingested, so it should be kept out of reach of children and pets. It should be stored in a tightly closed container, away from heat and light. When using iodine solution, avoid contact with skin and eyes, and work in a well-ventilated area to prevent inhalation of fumes.
Taking or using precaution; precautionary.
do not let the substance that your transferring touch you
vhb
Wear goggles and don't sit down, not letting your clothes catch fire is another good idea.