V-Sorb 4800S Specific Surface Area Analyzer Introduction

V-Sorb 4800S specific surface area analyzer is for surface area determination which utilizes static volumetric method. Analyzer be designed 

from the user perspective and equipped with fully automated operation and user-friendly interface, all these make it easy to learn. It has 4 

analysis stations with quick testing speed, is an ideal tool for production factories who need to control many materials quality every day.

V-Sorb 4800S Specific Surface Area Analyzer Specifications

1. Analysis Method: static volumetric nitrogen adsorption principle.

2. Testing Abilities: Adsorption and desorption isotherms, Single and multi-point BET (Brunauer-Emmett-Teller) surface area,  Langmuir surface area, t-plot external surface area, carbon black STSA etc.

3. Measuring Ranges: 0.01 m²/g (by nitrogen)/ 0.0005m²/g (by krypton) to no known upper limit.

4. Accuracy: repeatability errors ≤1%.

5. Vacuum System: V-Sorb unique monolithic manifolds and solenoid valve control system, greatly reduce the dead volume of analyzer.

6. Coolant Level Controller: V-Sorb original coolant level control system with temperature probe, ensure the coolant level unchanged when 

compares with sample cells in the whole analysis process, completely eliminate the analysis errors caused by the dead volume.

7. Sample Ports: four analyzing and four degassing simultaneously.

8. Pressure Measurement: branded pressure transducer, notably improve the measuring accuracy at low P/Po point, two 1000Torr (0-133Kpa) 

transducers, accuracy can reach 0.1% of real reading, better than 0.1% of F.S.(full-scale).

9. Partial Pressure: P/Po controllable accuracy range is 5x10^-6-0.998

10. Ultimate Vacuum: 4x10^-2Pa (3x10^-4Torr)

11. Vacuum Pump: built-in mechanical vacuum pump controlled by software which can auto control pump’s start/stop  

12. Adsorbate Gas: high purity nitrogen(≥99.999%), Ar, Kr, CO₂ etc. non-corrosive gases are optional

13. Dimension: Height 22.05 inches (56cm)* Width 20.87 inches (53cm)*Depth 23.62 inches (60cm); 132 pound (60kg)

V-Sorb 4800S Specific Surface Area Analyzer Technical Features

A: Vacuum System

1. Unique integral manifolds system, decrease connecting points apparently, reduce leak rate, improve ultimate vacuum.

2. Modularity design can configure as customer requests, benefits future functions extension and instrument maintenance.

3. Branded vacuum pump, low noise, stable working, oil-return prevention; ultimate vacuum can reach 4x10^-2 Pa (3x10^-4 Torr).

B: Control System

1. Industry programmable solenoid valve system, strong anti-interference ability, convenient for installation and uninstallation.

2. Separated analysis and pretreatment/degassing system can prevent foreign matter to contaminate manifolds during samples pretreatment.

C. Measures for Improving Accuracy

1. Imported pressure transducer, accuracy can reach 0.1% of real reading, better than 0.1% of F.S. (full-scale).

2. The 1000Torr pressure transducer, sectional measurement in pressure range can reduce errors in low vacuum, 10Torr (option) transducer is highly accurate than Pirani resistance vacuum gauge (general error is 10%-15%).

3. Unique monolithic manifolds system, decrease connecting points and reduce leak rate apparently.

4. Original stepping coolant level control system, ensure the coolant level unchanged when compares with sample cells in the whole analysis 

process, completely eliminate the analysis errors caused by the dead volume.

5. Pioneered gas outlet and inlet control system can efficiently prevent sample splash in evacuation and gas inlet process, guarantee clean 

manifolds and sample weight unchanged, avoid zero and liner drifting caused by transducer’s macro-change.

D. Data Acquisition and Reduction

1. High precision and integration data acquisition module is easy to connect, minimal errors and strong anti-interference ability; standard 485 

communication mode is good for analyzer’s applications extension and interconnection, can also conveniently switch to RS232 or USB modes.

2. Multi calculating formulas for data reduction provides all-round sample analysis options; powerful data archiving and searching system helps a lot for data management.

V-Sorb 4800S Specific Surface Area Analyzer Application Fields

1. For powder, nanomaterial, particle and fiber etc. materials specific surface area analysis.

2. Products quality control for production fields, like carbon black, catalysts, sieve and so on.

3. Research institutes, universities for BET (Brunauer-Emmett-Teller) surface area theory teaching.

4. Other researches concern specific surface area (single point BET, multi point BET, Langmuir surface area, t-plot surface area) performance.