Pressure transducers:   0.1 torr + 10 torr + 1000 torr

Pressure accuracy

0.1 torr, 1 torr

<±0.15 % of reading

10 torr

<±0.12 % of reading

1000 torr

<±0.11 % of full scale

Built-in vacuum system

High-vacuum construction

Metal-to-metal seals in critical measurement zones

Vacuum system (XR/MP)

Turbo-molecular drag pump and dry diaphragm pump

Ultimate vacuum (XR/MP)

5 x 10⁻¹⁰ mbar (5x10⁻⁸ Pa) (3.75 x 10⁻¹⁰ mm Hg)

Vacuum system (AG)

Two-stage rotary oil pump and foreline trap

Ultimate vacuum (AG)

<2.5 x 10⁻³ mm Hg (<3.3 x 10⁻³ mbar)

Physisorption capabilities

Analysis stations

1, 2, or 3

Parameters measured

Pore size distribution, pore volume, surface area

Adsorbates

N₂, Ar, Kr, CO₂, O₂, H₂, CH₄, etc.

Chemisorption capabilities

Analysis stations

1

Parameters measured

Active (metal) area, dispersion, crystallite size

Chemisorbed amount

Combined, reversible (weak), irreversible (strong)

Chemisorption monolayer

Extrapolation, Langmuir, Dissociative Langmuir, Freundlich, Temkin

Catalyst parameters

Active (metal) area, dispersion, crystallite size

Chemisorption enthalpy

Clausius-Clapeyron

Cell stem diameter

6 mm, 12 mm

Chemisorption furnace

Type

Ceramic tube furnace with safety heat shield

Maximum temperature

1100 °C

Temperature accuracy

0.1 % of span

Temperature stability

±1 °C

Ramp rates

1 °C to 50 °C per minute

Maximum temperature

1100 °C

Furnace cooling

Built-in fan

Furnace/lid closure/separation

Automatic

Adsorbates

N₂, Ar, Kr, CO₂, O₂, H₂, NH₃, etc.