Types and Measurements

The tables below list the types of measurements that we routinely perform and the experimental apparatus and measurement conditions for these measurements:

Phase equilibria

Type of measurement Method Temperature range, Deg. C Pressure range, psia
Vapor-liquid equilibria Glass still 0 to 200 0 to 15
Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Flow cell -50 to 300 0 to 3000
Liquid-liquid equilibria Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Simultaneous vapor-liquid and liquid-liquid equilibria Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Solid-vapor or solid-liquid equilibria Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Infinite dilution activity coefficients Gas chromatograph retention times -200 to 250 15 to 2000
Gas solubilities Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Flow cell -50 to 300 0 to 3000
Distillations Continuous -75 to 200 0.2 to 300
Batch -75 to 200 0.2 to 300

Thermophysical properties

Type of measurement Method Temperature range, Deg. C\ Pressure range, psia
Vapor pressure Glass still 0 to 200 0 to 15
Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Flow cell -50 to 300 0 to 3000
Liquid density and vapor PVT Manually agitated stainless cell -200 to 300 0 to 2000
Magnetically stirred stainless cell -200 to 500 0 to 5000
Critical points Static rocked cell 20 to 450 0 to 3000
Flow cell 20 to 450 0 to 3000
Enthalpy Flow calorimeter -80 to 300 15 to 10,000
Heat capacity Rocked calorimeter 20 to 500 15 to 3000
Flow calorimeter 20 to 500 15 to 10,000
Heat of vaporization and heat of mixing Flow calorimeter 20 to 500 15 to 3000
Surface tension Capillary rise -80 to 300 15 to 3000
Viscosity Pressure drop through capillary of packed tube -80 to 300 15 to 3000

Chemical equilibria

Type of measurement Method Temperature range, Deg. C Pressure range, psia
Reaction equilibria Magnetically stirred cell with sample analyses -80 to 300 15 to 3000
Reaction kinetics Magnetically stirred cell with pressure monitoring and/or discretesamples -80 to 300 15 to 3000
Flow cell -80 to 300 15 to 3000
Heats of reaction Flow calorimeter -80 to 300 15 to 3000
Simultaneous chemical and phase equilibria Magnetically stirred cell with pressure monitoring and/or discretesamples -80 to 300 15 to 3000
Flow cell -80 to 300 15 to 3000
 
 

The limits of temperature and pressure in the tables are approximate. More extreme operating conditions can usually be obtained if needed.

The costs for these various measurements are dependent upon several factors such as temperature and pressure ranges, hazardous nature of chemicals, cost of chemicals, disposal of chemicals, difficulty of analyses and complexity of the measurements themselves. Once we have received the necessary information describing your data needs, we will provide a quotation for the work.