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Thermo Scientific™ SURF-CAL™ Particle Size Standards

Simplify the preparation of calibration wafers with these particle size standards.

Manufacturer:  Thermo Scientific™ PD155

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Catalog No. 09-980-158

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Simplify the preparation of calibration wafers with Thermo Scientific™ SURF-CAL™ Particle Size Standards, for calibration and maintenance of Scanning Surface Inspection Systems (SSIS). Available particle sizes correspond to the calibration point sizes required by instrument manufacturers.

Thermo Fisher Scientific™, along with the Semiconductor Industry and SEMI, have established specific particle sizes to be used when calibrating Scanning Surface Inspection Systems. Working with instrument manufacturers, we created the SURF-CAL™ product line to meet SEMI standard guidelines.
  • Available sizes are considered to be critical sizing nodes as defined by the International Technology Roadmap for Semiconductors (ITRS).
  • By depositing SURF-CAL™ NIST™ traceable polystyrene latex spheres (PSL) on specially selected wafers, you can perform periodic calibration checks and compare your scanner with scanners at other locations.
  • You can also assess the performance of your SSIS at critical stages in the manufacturing process.
  • All products are suspended in deionized, filtered water in 50mL bottles at a concentration of 3 x 108 particles per mL.


Products PD1100 and smaller are also available at 1010 particles per mL for applications using the aid of a Differential Mobility Analyzer (DMA) or other size exclusionary techniques.

Description & Specifications


3 x 108 particles/mL
Particles for calibration and maintenance of Scanning Surface Inspection Systems (SSIS)
Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
SSIS Calibration and Maintenance
Polystyrene microspheres in deionized, filtered water
Certificate of Calibration and Traceability to NIST
1.59 at 589nm (25°C)
Product stable for a minimum of 12 months
Size Standard Particles
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