Why are there bubbles (air)?
——It is normal to leave bubbles inside the bottle (water not full), This is to prevent a large temperature difference in winter to avoid causing swelling and cracking.
——This scene can usually be seen in the beverage section and liquor section of supermarkets, as well as the condiments section.
——We can find that liquids packed in glass bottles are often not filled, leaving some air, which is to prevent the liquid from expanding after filling, causing the glass bottle to burst.
——Plastic bottles can be filled? No, it depends on what is packed. In short, leaving air is the best protective measure.
So I don't like this bubble. What should I do?
- You can do this.
- Prepare water, special water for Ferrofluid, click here for reference (how to choose a liquid carrier?) to get the method.
- Open the bottle cap and add water.
- Attention:
- Do not screw the bottle cap too tightly. Too tight will cause excessive internal pressure and increase the possibility of expansion and cracking.
- Do not screw the bottle cap too tightly. Too tight will cause excessive internal pressure and increase the possibility of expansion and cracking.
- Individual bottle caps are buckled and cannot be opened, so how to add water?
- You need to prepare two syringe needles and one syringe. Put the two needles directly Needling in. Needle A is for exhaust and needle B is for water injection.
- Attention:
- If you use a needle without venting, this will compress the internal air, causing the internal pressure to be too high, which will increase the risk of cracking.
- When sticking the needle, rotate it in slowly, and don't plunge it in with a sudden force.