Material Properties and Specifications

The document provides key physical and thermal properties of resistive glass products used in high vacuum systems and analytical instruments. Notable parameters include:

• Softening Temperature: Approximately 613°C to 642°C.
• Operating Temperature Range: -20°C to 400°C.
• Density: Not explicitly stated but referenced.
• Annealing Temperature: Around 480°C to 482°C.

These properties ensure the glass's suitability for high-temperature and vacuum applications.

Product Formats and Shapes

Resistive glass is manufactured in a variety of robust formats tailored for different applications, including:

• Capillary tubes
• Cylinders
• Sheets
• Washers
• Custom shapes

The glass features a reduced lead silicate layer, typically several microns thick, enhancing its performance in vacuum and analytical environments.

Electrical Resistance Characteristics

The resistance of these patented resistive glass products can be finely tuned over many orders of magnitude to optimize performance for specific applications. This tunability is critical for controlling the speed and direction of charged particles in analytical instruments.

Applications in Analytical Instruments

Resistive glass is uniquely suited for use in mass spectrometry and ion mobility spectrometry. Key applications include:

• Ion Guides: Structures and assemblies made from resistive glass guide ions efficiently.
• Capillary Inlet Tubes: Single and multicapillary tubes improve ion transmission, with multicapillary arrays providing up to 1000 times increased sensitivity compared to conventional single capillaries.
• Drift Tubes: FieldMaster™ drift tubes enhance ion transmission and energy focus, improving analytical resolution.

Performance Enhancements and Benefits

The document highlights that resistive glass components improve ion transmission efficiency and energy focusing in mass spectrometry setups. Multicapillary inlet tubes, with arrays of six individual channels, act as singular inlets to significantly boost sensitivity. Drift tubes made from resistive glass demonstrate better full width at half maximum (FWHM) values, indicating improved energy focus and spectral quality.

Recommendations and Best Practices

For optimal performance, the resistance of the glass should be carefully tuned to the application requirements. The use of multicapillary inlet tubes is recommended where increased sensitivity is critical. The products are designed to operate reliably within the specified temperature ranges and vacuum conditions.

Summary of Critical Parameters

Contact and Location

The manufacturer is located at 660 Main Street, Sturbridge, MA 01566-1159, USA.