Complex sentence: When using a gas syringe to measure gases it is important to keep the syringe free from liquids, as gases can dissolve in liquids, especially under any resulting pressure which will result in inaccurate measurements (Henry's law).
Split into simpler sentences: When using a gas syringe to measure gases it is important to keep the syringe free from liquids. As gases can dissolve in liquids, especially under any resulting pressure, this may result in inaccurate measurements (Henry's law).