There are several types of osmometers used in toxicology:
Vapor Pressure Osmometers: Measure the decrease in vapor pressure caused by solutes. Freezing Point Depression Osmometers: Measure the drop in freezing point to determine osmolality. Membrane Osmometers: Use semipermeable membranes to measure osmotic pressure differences.
Each type of osmometer has its specific applications and advantages in measuring the osmolality of various samples.