FlowSorb III

Dynamic Sorption Surface Area Analyzer

Precise and high speed surface area analysis.
Includes both preparation and analyzer in one instrument
Suitable for a wide variety of surface area measurements

The Flowsorb III provides single-point and multipoint BET surface area measurements with speed, accuracy, and reliability. Samples having surface areas from 0.01 m2 /g to over 1,000 m2 /g are easily accommodated.

Features and Benefits:

Ultra-stable detector eliminates drift and the need for constant readjustment
Cold trap conveniently located in front vs. side placement, as in other instruments. This placement reduces the chance of breakage.
Single injection calibration requires only one control setting. Adaptable to any non-corrosive adsorbate mix.
All controls and displays are at eye/ arm level, out of the spill zone
Built-in sample preparation Rugged construction for day-in, dayout operation
Rugged construction for day-in, dayout operation

Specifications

Applicability

Surface Area	0.1 m² (minimum); 280 m² (maximum)
Specific Surface Area	Approximately 0.01 m²/g (minimum)

Accuracy & Reproducibility

Low Specific Surfaces	Typically better than ±3% (single point method) ±2% (multipoint method) reproducibility within ±0.5%
Moderate-to-High Specific surfaces	Typically better than ±2% (single point method) ±1.5% (multipoint method) reproducibility within ±0.5%

System Capacity

Sample Holder Volume

4.8cm³; other sizes available

Physical

Dimensions	46.5W x 53H x 30.5D cm (18.3W x 20.9H x 12D in)
FlowSorb III 2305	Weight: 18 kg (40 lbs)
FlowSorb III 2310	Weight: 20 kg (44 lbs

Degas System

Temperature Range	Ambient to 350 °C
Selection	Digitally set, 1 °C increments
Accuracy	Deviation less than ±10°C of set point at thermocouple

Environment

Temperature	15-30°C (59-90°F) operating; 0-50°C (32-122°F) storing and shipping
Humidity	20-80% relative (non-condensing

Electrical

Voltage	100,115,230 VAC ±10%
Frequency	50/60Hz
Power	240 VA, operating (maximum)

Gas

Mixtures of helium with nitrogen, argon, krypton, carbon dioxide, ethane, n-butane, and other noncorrosive gases. A mixture of 30% N₂ and 70% He is recommended for singlepoint analysis. Mixtures of He and approximately 5, 12, 18, and 24% N2 are suggested for multipoint BET use.

Technology

The FlowSorb III measures surface area using the flowing gas method, which involves the continuous flow of an adsorptive and inert gas mixture over the sample at atmospheric pressure.

The FlowSorb III’s reproducibility is better than 0.5%. The FlowSorb III 2310 features a built-in Dewar elevator for completely automated analysis and rewarming fan for rapidly warming the sample tube to increase the speed of the sample analysis. Single injection calibration provides fast start-up and high sample throughput. Specially designed sample holders can be attached and removed from the instrument with one hand.

These quick connect/disconnects have a built-in isolation valve to prevent sample contamination. The FlowSorb III 2305 features a Dewar support latch system that provides one-handed convenience and safe guards against LN2 spills. Simple in design, the Flow-Sorb III requires minimal training time and leaves little chance of operator error. Automatic mode switching for adsorption and desorption is accomplished without operator attention. The low purchase price of the FlowSorb III and its accessories make this instrument one of the most inexpensive ways for a laboratory to begin measuring BET surface area.