Water
Solvent (best)
Ethanol
Co-solvent
Sorbitol
Co-solvent
Glycerin
Co-solvent
Propylene glycol
Co-solvent
PEG
Co-solvent
Surfactants (tweens)
Solubilizer
Sugar
Viscosity enhancer/ controller
Polyvinyl pyrrolidine (PVP)
Viscosity enhancer/ controller
Cellulose derivatives
Viscosity enhancer/ controller
Citric
Buffer
Lactic
Buffer
Glutaric
Buffer
Parabens
Preservative (for fungi)
Methyl
Preservative (for molds)
Propyl
Preservative (for yeast)
Cellulose nitrate
Filter media
Polyamide
Filter media
Polyvinyledene chloride
Filter media
Nylon
Filter media