Dimension Standards

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Calibrated Device
Standard Particles, Standard Particle Counter
(1) Counting Efficiency of Standard Particle Counter
(2) Zeta Potential (Polystyrene Standard Particle)
(3) Specific Surface Area of Standard Particle
Range
(1a) Particle Size: 100 nm, Concentration: 1 cm-3 to 1000 cm-3
(1b) Particle Size: 50 nm to 200 nm, Concentration:1000 cm-3 to 10000 cm-3
(2) -75 mV < Absolute Zeta Potential < 75 mV (Particle Size > 20 nm)
(3) 5 m2/g to 550 m2/g
Uncertainty
(1a) 2.3 % to 3.7 % (Relative)
(1b) 2.2 % to 2.4 % (Relative)
(2) 2.7 mV
(3) 2.1 % (Relative)
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