Calibration Certification for 12" and 24" Flats: FAQ

Quick answer

Zygo offers calibration certifications for 12-inch and 24-inch flats, each including a system error file on USB. The 12-inch flat requires a high stability cell.

Frequently asked questions

What is included with each certification?

Both the 12" and 24" certification packages include a system error file delivered on a USB drive. This file documents the flat's calibration data for traceability.

Do I need a high stability cell for the 12" flat?

Yes. The 12" flat certification explicitly requires a high stability cell. Without it, the calibration may not be accurate. The 24" flat does not have this requirement. If you own a 12" flat, verify you have a high stability cell before ordering the certification.

How much does each certification cost?

The 24" flat certification is USD 16.32 (catalog price USD 24.00), while the 12" flat certification is USD 7.92 (catalog price USD 12.00). Both are offered under the Standard option.

Can I use the system error file with any interferometer?

The system error file is provided in a standard format on USB. It should be compatible with most interferometer software that accepts calibration files, but check your instrument's documentation to confirm. Always verify file format compatibility before relying on the certification for a specific test.

Certification options at a glance

• Certification of Calibration 12" Flat: Certificate of Calibration for a 12" flat, includes system error file on USB, and requires a high stability cell. If you use a 12" flat without a high stability cell, the certification may not be valid for your setup.

  

• Certification of Calibration 24" Flat: Certification of Calibration for a 24" flat, supplied with a Sys Error File on USB under the Standard option. The 24" certification covers a larger surface area, making it suitable for bigger optics without needing extra hardware.