Osmometers
Instruments suitable for measuring the osmotic strength of a solution, colloid, or compound, or for determining the average molecular weight of a sample. Products include accessories and replacement parts for osmometers.
Osmometers and micro-osmometers (osmotic meters) are devices for measuring the osmolality (osmotic concentration or osmotic strength) of aqueous solutions. Osmolality is defined as the total concentration of all osmotically active dissolved solutes present in a given volume of solution. Osmolality is usually measured in mOsm/L or Osm/L.
Modern, automated electronic osmometers offer user-programming and digital displays and can analyze very small volumes of samples down to 20 µL.
What are the Different Types of Osmometers?
Different osmometers work based on different operating principles:
• Freezing point osmometers: industry-preferred models; provide the greatest accuracy and precision since the freezing point of water is depressed in proportion to the level of dissolved solute
• Vapor pressure osmometers: avoid issues associated with high viscosity or suspended particulates that may interfere with freezing point depression
• Other: osmometers based on the principles of specific gravity, refractive index, semi-permeable membrane flow or conductivity; are less favored and are considered less reliable
Most osmometers are supplied with a range of calibration standards and reference solutions (osmometer controls) and osmometer accessories.
How Are Osmometers Used in the Lab?
Osmometers are key items of equipment in a range of laboratory environments:
• Clinical chemistry: for testing whole blood, serum, plasma, urine and other body fluids for metabolic and electrolytic disorders and intoxication
• Pharmaceutical industry: bioprocess monitoring at critical points during manufacturing
• Organic and inorganic chemistry: to determine the average molecular weight of polymers or other unknown compounds or mixtures
• Other biology applications: analysis of plant saps, hydroponic or cell culture media
Precision Systems Osmette™ Multi-Osmette Osmometer
Automatic digital osmometers measure osmolality in mOsm/kg H2O. Osmette Multi-Osmette Osmometer uses the freezing point depression method to provide a quick, accurate indication of total concentration. Instruments measure freezing points of solutions to 0.001°C, then directly translate them to measure of concentration.
Advanced Instruments Osmo1 Single-Sample Micro-Osmometer
The Advanced Instruments Osmo1 Single-Sample Micro-Osmometer offers direct draw of small sample volumes, ease-of-use, accurate and precise results, and the security and efficiency of electronic data management.
Precision Systems Touch Micro-Osmette™ Osmometer, Model 6002
Freezing Point Osmometer incorporates the latest in menu-driven operation with the precision and accuracy we have delivered for over 50 years.
Precision Systems Osmette™ A Osmometer
Automatic digital osmometers measure osmolality in mOsm/kg H2O. Osmette A Osmometer uses the freezing point depression method to provide a quick, accurate indication of total concentration. Instruments measure freezing points of solutions to 0.001°C, then directly translate them to measure of concentration.
Precision Systems Osmette™ Micro-Osmette Osmometer
Automatic digital osmometers measure osmolality in mOsm/kg H2O. Osmette Micro-Osmette Osmometer uses the freezing point depression method to provide a quick, accurate indication of total concentration. Instruments measure freezing points of solutions to 0.001°C, then directly translate them to measure of concentration.
Precision Systems Osmette II™ and Osmette III™ Osmometers
The simplicity and dependability of Osmette™ osmometers in a small, lightweight size. Osmette II and Osmette III Osmometers are ideal for one-step freezing-point measurement of osmolality.
Advanced Instruments OsmoPRO™ Multi-Sample Micro-Osmometer
Simple and efficient freezing point osmometer. Ideal for mid- to high-volume laboratories that prefer to automate osmolality batch testing while improving laboratory efficiency, throughput, and productivity.
Advanced Instruments Micro-Sample Test Kit
The Advanced Instruments Micro-Sample Test Kit ensures accurate and precise results with the Advanced Instruments Osmo1 and 3320 Single-Sample Micro-Osmometers.
Advanced Instruments Advanced™ Ease-Eject™ Sampler
For use with Model 3300 and Model 3320 Micro-Osmometers Only
Precision Systems Printer Paper for 5010 Osmette III™ Fully Automatic 10μL Osmometer
Accessory for 5010 Osmette III fully automatic 10μL Osmometer.
Advanced Instruments Probe Wiper Rings
Probe Wiper Rings for Advanced Multi-Sample Osmometer, Model 2020
Precision Systems Osmette™ Osmometer Disposable Sample Tubes, 50 μL
Disposable sample tubes for Model 5004 Micro Osmette
Advanced Instruments Osmometer General Accessories and Supplies
Accessories for use with Advanced Instruments Osmometers.
Precision Systems Osmette™ Pipette Tips and Cleanettes, 10 μL
Pipette tips and cleanettes for Model 5010 Osmette III