Micro 100

● Available in multiple models to support diverse lab-throughput needs.
● 2 analysis stations with high-vacuum pump and up to 3 pressure sensors per station.
● Simultaneous testing with different adsorbate gases across all active stations.

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Product Overview

Introduction

The AMI-Micro 100 Series is a high-precision physisorption instrument designed for the accurate determination of specific surface area and pore size distribution in a wide range of materials. The series is available in three distinct models—A, B, and C—each offering specialized capabilities to accommodate various analytical requirements (refer to the specification table for further details).

The Micro 100 C model is equipped with high-sensitivity 1 torr pressure transducers (with an optional 0.1 torr configuration) and a turbo molecular pump achieving an ultimate pressure of 10⁻⁸ Pa, ensuring exceptional accuracy in the characterization of microporous structures. Furthermore, all analysis stations incorporate in-situ sample preparation, effectively minimizing contamination and enhancing measurement reliability.

Engineered for advanced materials research, the AMI-Micro 100 Series is particularly well-suited for the characterization of microporous materials, including metal-organic frameworks (MOFs), molecular sieves, catalysts, activated carbon, and other porous substances, providing precise and reproducible gas adsorption analysis.

Features

Software

Typical Analysis Result

Specification

Features

Module Design for Minimal Dead Volume

The internal gas path design of the instrument adopts a unique integrated metal module design, which not only reduces the internal dead volume spacebut also helps mitigate possible leaks.

Saturated Vapor Pressure P0

An independent P0 pressure transducer is configured at 133 kPa for P0 value testing,enabling real-time P/P0 measurement for more accurate and reliable test data. Alternatively, an atmospheric pressure input method can be used to determine P0.

Datasheet

Independent analysis ports

With independent analysis ports, the system employs a unique vacuum control logic that allows each station to operate without disruption, even when using a single mechanical pump or pump group. This enables simultaneous, independent experiments, meeting diverse adsorbent testing needs while ensuring high efficiency.

Thermal Stabilization

A core rod in the sample tube reduces deadvolume and stabilizes the cold free space coefficient, while an iso-thermal jacket maintains a constant thermal profile along the tube. Additionally, automatic helium correction ensures precise calibration for any powder or particulate material, minimizing temperature-related deviations during analysis.

High Accuracy Pressure Transducers

Equipped with 1000 torr pressure transducers, the Meso Series enables precise physical adsorption analysis, achieving a partial pressure (P/P0) as low as 10-2 for nitrogen (N2) at 77 K.

Optimized Manifold Contamination Control

This system features a multi-channel, adjustable, and parallel vacuum design with segmented vacuum control. This setup effectively prevents samples from being drawn up into the analyzer therefore preventing manifold contamination.

Liquid Nitrogen Dewar

The use of 1 L Dewar flasks in conjunction with a sealed cover ensures a stable thermal profile along the entire length of both the sample tubes and P0 tubes throughout the testing process.

Sample Preparation

Equipped with four in-situ degassing ports, enabling simultaneous degassing and analysis. Each port offers independent temperature control from ambient to 400°C, ensuring precise sample preparation.

Software

PAS Software is an intelligent solution for operation control, data acquisition, calculation, analysis, and report generation on the Windows platform. It communicates with the host via the LAN port and can remotely control multiple instruments simultaneously.

PAS Software adopts a unique intake control method, optimizing pressure in the adsorption and desorption processes through a six-stage setting, which improves testing efficiency.

Changes in pressure and temperature inside the manifold can be directly observed in the test interface, providing convenience for sample testing and instrument maintenance. The current state of analyzer can be intuitively understood with the indicator light and event bar.

Each adsorption equilibrium process is dynamically displayed on the test interface. Adsorption characteristics of the sample can be easily understood.

A clear and concise report setting interface, including the following:

Adsorption and desorption isotherms

Single-/Multipoint BET surface area

Langmuir surface area

STSA-surface area

Pore size distribution according to BJH

T-plot

Dubinin-Radushkevich

Horvath-Kawazoe

Saito-Foley

Typical Analysis Result

The specific surface area test results for iron ore powder are shown in the figure below. As a material with an inherently low specific surface area, the repeatability error in the measurements is only 0.0015 m²/g, demonstrating high testing precision.

Analysis of pore size distribution of activated carbon materials by NLDFT.

Adsorption and Desorption Isotherms of typical macroporous material – silica.

Specification

Category100A100B100C
Analysis Ports222
P0 Transducer222
Analysis Pressure Transducer123
Accuracy (PTs)1000 Torr1000 Torr, 10 Torr1000 Torr, 10 Torr, 1 (0.1) Torr
Testing ModeSequential
AdsorbatesN₂, Ar, Kr, H₂, O₂, CO₂, CO, NH₃, CH₄, etc.
Pump2 mechanical pumps (ultimate vacuum 10⁻² Pa): 1 analysis, 1 degas2 mechanical pumps (ultimate vacuum 10⁻² Pa): 1 analysis, 1 degas2 mechanical pumps (ultimate vacuum 10⁻² Pa): 1 analysis, 1 degas;
1 turbo molecular pump (ultimate vacuum 10⁻⁸ Pa)
P/P010⁻⁴ – 0.99810⁻⁸ – 0.998
Surface Area≥ 0.0005 m²/g, test repeatability: RSD ≤ 1.0%
Cold Trap1
Pore Size0.35 – 500 nm, test repeatability ≤ 0.02 nm
Pore Volume≥ 0.0001 cm³/g
Degassing Ports2 in-situ / 2 ex-situ
Volume & WeightL 34.5 in (870 mm) × W 22.5 in (570 mm) × H 35.0 in (890 mm), 176 – 198 lbs (80 – 90 kg)
Power Requirements110 or 240 VAC, 50/60 Hz, maximum power 300 W

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