Three Gemini VII Model Options

Gemini VII 2390a

This option is ideal for rapid and accurate surface area determinations Also provides standard methods for: single-point and Langmuir surface areas, total pore volume, micropore analysis by the t-method, and much more. Included is the capability to determine statistical thickness surface area (STSA) of carbon blacks. (Refer to ASTM D 6556, ASTM D 3765, ISO/DIS 18852.2, or ISO/CD 4652-2/3.)

Gemini VII 2390p

Provides additional precision with the addition of a P0 (saturation pressure) tube allowing the user to monitor the saturation pressure of the adsorptive on a continuous basis. The instrument is designed to provide a rapid measurement of the adsorption isotherm.

Gemini VII 2390t

Gemini Has all the capability of the 2390 with the additional ability to perform a BJH or Dollimore Heal pore size distribution using both adsorption and desorption isotherms of up to 1000 points. This instrument also features a P0 tube as well as a larger Dewar and longer sample tubes for extended analysis. The Gemini Series of surface area analyzers uses the Static Volumetric Technique to generate high-speed surface area and porosity data.

Features

• Low cost
• Fully automatic operation
• High throughput – up to four Geminis can be operated with single computer
• Capable of measuring low surface area materials
• Keypad or computer-operated with Windows-driven software
• Choice of analysis mode (scan or equilibrate)
• No pressure overshoot
• Common mode rejection of free-space error effects
• No thermal-diffusion errors
• Optional stainless-steel Dewars
• 21 CFR Part 11 software option
• IQ/OQ Validation service (optional)