◇ 3K/4K Series Particle Counter Size Standards provides an accurate and convenient
    method for calibrating or checking the performance of laser particle counters used in
    cleanrooms and other contamination monitoring applications
◇ Particle Composition: Polystyrene
◇ Particle Density: 1.05 g/cm3
◇ Index of Refraction: 1.59 @ 589 nm (25°C)
◇ Packaged in: 15 mL
◇ Size : 0.1, 0.15, 0.2, 0.22, 0.27, 0.3, 0.35, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.6, 2.0, 3.0, 4.0,
              5.0, 6.0, 7.0, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 100um