Search keywords：
product name, product type, model number,
test method, manufacturer, technique, application
-
Cone Calorimeter
The import of American VTEC, cone calorimeter ultra high cost performance
more
-
Digital Elmendorf Tearing Tester
Pendulum method test material tear strength, operating more simple, more accurate data
more
-
ZwickiLine Materials testing machines
Top of the world's leading universal material testing machine
more
Liquid-Liquid Porosimeter
BACK
Standards:
Applications:
Use two non-mixed and saturated moist liquids such as silwick and alcohol. The pores is filled with the silwick liquid. Use alcohol with adding pressure to replace the silwick and flow through the pores. Measure the amount of liquid flowing out. The flow rate and pressure difference of the alcohol were measured. Since the surface tension of the silwick and the alcohol was very low, the contact angel is zero. Calculate the average flow pore diameter and pore distribution (eg, CFP) .
Product Information:
Introduction
The liquid-liquid porosimeter is a unique instrument with the ability to measure through–pore volume, volume distribution and liquid permeability without using mercury. The instrument is employed for characterization of porous materials used in many industries such as biotech, pharmaceutical, filtration, food, and environment. It produces no harmful effects on personnel or environment.
Operation Principle
The wetting liquid automatically fills the pores of the material and selects two immiscible liquids. The liquid 1 having a lower surface tension is used to fill the pores of the sample, the liquid 2 is added to the top of the sample and pressurized to displace the liquid in the pores and flows through the empty pores. The flow rate of the liquid 2 can also be measured in the absence of liquid 1. In the case of wetted samples, the pore diameter is related to the surface tension of the two liquids, resulting in pore distribution and liquid permeability.
D = pore diameter
y1 = surface tension of the liquid
Θ1 = contact angle of the liquid
P = differential pressure
Features
· It can measure pore diameters as small as few nanometers. Very low fluid permeability can be measured.
· The pressure required is much less than the amount of pressure required for a capillary porometer.
· Fully automatic and user-friendly operation
Technical Parameters
| Items | Parameters |
| Pressure range | 0~500psi |
| Pore size range | 0.5~0.002μm |
| Resolution | 1 in 60000 |
| Flow resolution | 0.0001cc/min |
| Sample dimension | Diameter 5mm~50mm,thickness 1〃（others applicable） |
