Flow Imaging Microscopy combined with Light Obscuration Capabilities

The purpose of Admendment 0001 is to update the SOW and Terms and conditions to include Option years for the service agreement. ________________________________________________________________________________ The purpose of Amendment 0001 is as follows:

1. Extend due date for offers to September 4, 2026.;

2. Revised Title to read "flow imaging instrument combined with light obscuration capabilities" 3. Provide updated Statement of Work and Attachment 2 - Terms and Conditions to include Option Periods for Service Agreement _________________________________________________________________________________________________________ The Bioprocess Measurements Group at the National Institute of Standards and Technology (NIST) located at Gaithersburg, MD provides measurement science and standards for robust characterization of biologically or synthetically derived particles that are relevant in the biomanufacturing industry. These particle types can be hard to distinguish, and regulatory guidelines require detailed characterization of these particles in drug products. Industry currently relies heavily on flow imaging microscopy and light obscuration (compendial method) for characterizing these particles in their products. We are requesting an updated flow imaging instrument with light obscuration capabilities to replace two outdated, unsupported systems (Flow imaging and Light Obscuration) which no longer reflect instruments used in industry which limits data comparability and collaboration.