parse-zetasizer

Parse tab-separated text exports from Malvern Panalytical Zetasizer instruments.

The parser dynamically discovers array columns (e.g., Sizes, Intensities, Volumes, Numbers) and scalar metadata columns from the header row, so it works regardless of which fields the user selected for export.

Installation

npm install parse-zetasizer

Usage

import { readFileSync } from 'node:fs';

import { fromText } from 'parse-zetasizer';

const text = readFileSync('zetasizer-export.txt', 'utf8');
const records = fromText(text);

// records is an array of measurements, one per row
for (const record of records) {
  // Array data (Sizes, Intensities, etc.) is directly on the record
  console.log(record.Sizes.data); // Float64Array
  console.log(record.Sizes.units); // "d.nm"

  // Distribution parameters are attached when available
  console.log(record.Intensities.mean); // e.g., 116.1
  console.log(record.Intensities.distributions); // [{ peak: 116.1, width: 32.94 }]

  // record.meta contains scalar metadata
  console.log(record.meta['Sample Name']);
  console.log(record.meta['Temperature (°C)']);
}

License

MIT