Planning a multi-site chemometric model rollout
A multi-site rollout is not one deployment repeated N times. Five upstream decisions - governance, transfer, validation, change control, data flow - determine whether site N behaves like site one.
Category
How-to Guides
Practical methodology - feasibility scoping, validation, scaling - from people who have done it.
Calculating PAT ROI without inflating the numbers
A practical method for ROI on a process analytics project that finance will accept. Full lifecycle costs, benefits that survive audit, asset-matched horizons, and the pitfalls that turn a real win into a paper one.
How to evaluate vendor proposals for inline analyzers
A structured approach to RFP evaluation for inline process analyzers, covering specification verification, calibration transfer, validation evidence, FAT/SAT scope, and lifecycle maintenance burden.
Calibration transfer between instruments: a working protocol
A partial least squares model rarely survives the move to a second instrument unchanged. A working protocol covers transfer set design, the standardisation method, and the acceptance criteria.
Planning a calibration set for chemometric models: a working checklist
A calibration set defines what a chemometric model can predict, and where it will fail. Five planning decisions made up front determine whether validation later passes or unravels.
Scoping a PAT feasibility study: a six-step framework
A feasibility study costs less than the analyzer and reduces project risk by an order of magnitude. The shape of a useful one - what to measure, on what samples, against what reference, with what success criteria.
Validating a chemometric model for GMP: a working checklist
ICH Q14 sets the framework. ASTM E1655 sets the practice. The intersection - what an inspector actually wants to see in a chemometric validation file - is a short, specific list.
How to write a PAT user requirement specification
A user requirement specification is the contract between the process owner and everyone else. Done well it shrinks the project; done badly it bloats it. The structure that survives audit and procurement.