Under both equilibrium & non-equilibrium conditions
Surface ages as low as 5 milliseconds
Both with & without polar & dispersive components
Lewis acid & Lewis base splits
Using pendant drop, Wilhelmy plate, DuNouy ring, melt capabilities up to 350oC
Interfacial Tension Measurements
Surface Tension Measurements for Liquids & Melts
Surface Tension Measurements for Liquids & Melts
Liquid/liquid & liquid/solid
Both equilibrium & non-equilibrium conditions
Liquid/liquid tensions as low as 0.01mN/m
Interface ages as short as 0.5 seconds
Adsorption/diffusion coefficients & activation energies for adsorption for interfacially active molecules
Using pendant drop, drop volume, & ASTM D971 DuNouy ring methods
Contact Angle & Surface Energy Measurements
Surface Tension Measurements for Liquids & Melts
Contact Angle & Surface Energy Measurements
For any solid material, porous materials & non-porous materials, powders, membranes, fibers, papers
Washburn, sessile drop, dynamic contact angle techniques, even vapor sorption techniques available
All varieties of surface energy theories applied
Polar/disperse, acid/base, three-phase contact angles, captive bubble, captive drop, high-speed measuring of apparent contact angles during droplet penetration into porous surfaces
FREE immersional free energy and/or adhesion energy calculations
Critical Micelle Concentrations
Surface & Interfacial Rheology Studies
Contact Angle & Surface Energy Measurements
By either surface tension or interfacial tension techniques, as appropriate for your materials
Surfactant synergism, hydrotropes, polymer/surfactant, protein/surfactant, & colloid/surfactant interaction studies, also available
40 concentration duplicate determinations to really pin-point the CMC
Buffers & controlled pH environments
Moisture Sorption Studies
Surface & Interfacial Rheology Studies
Surface & Interfacial Rheology Studies
Full RH & temperature control up to 80oC
Sample pre-drying
Real-time data processing for accurate sorption kinetics due to any temperature or RH step, gravimetric, micro & mesoporous materials, pharmaceutical powders
Characterization of moisture transfer properties for packaging materials, complete isotherms, deliquescence studies
Surface & Interfacial Rheology Studies
Surface & Interfacial Rheology Studies
Surface & Interfacial Rheology Studies
Determination of the elastic & viscous moduli of a surface or interface
Quantification of the Marangoni effect for surfaces & interfaces subjected to controlled perturbations- one of the most quantitative methods available for understanding molecular movements at surfaces & interfaces, as they relate to foaming & emulsion stabilization
Density Measurements
Particle Size Distribution Experiments
Particle Size Distribution Experiments
Liquids or solids, 4 place accuracy
Particle Size Distribution Experiments
Particle Size Distribution Experiments
Particle Size Distribution Experiments
& sedimentation rate experiments, for particles in colloidal dispersions which settle
Evaluated by the Stokes-Einstein expression
Wet Density of Porous Solids
Particle Size Distribution Experiments
Viscosity Measurements for Liquids
As is important for accurate particle size distribution determinations by sedimentation experimentation using the Stokes-Einstein expression
Viscosity Measurements for Liquids
Viscosity Measurements for Liquids
Viscosity Measurements for Liquids
Low shear, 3 place accuracy
Dissolution Rate Experiments
Viscosity Measurements for Liquids
Dissolution Rate Experiments
For solids that dissolve in liquids, accurate gravimetric approaches to dissolved mass = f (time) data
Penetration Experiments
Viscosity Measurements for Liquids
Dissolution Rate Experiments
force = f (depth) data for penetration into soft solids & sediments