Thermo Fisher, 4D-03, 4D Series Dry Microsphere Size Standards

Diameter (Metric): 3 μm
Unit Size: Each
The diameter is traceable to the National Institute of Standards and Technology (NIST), and the product’s Certificate of Calibration and Traceability provides the documentation needed for QC/regulatory programs and audits.
• Mean size standard uncertainty of ≤2.5% enables calibration of air particle counters to ISO
• Superior uniformity provides exact calibration point when setting the calibration curve
• Diameter is traceable to NIST, a known government standard
• Certificate of Traceability provides objective evidence for QC compliance
• Available in 3μm, 5μm, 7μm and 10μm diameters
• Conveniently packaged in dropper-tipped bottles for direct dispensing into sampling chamber