EZY-CAL Count Precision Size Standards

Ezy-Cal Count Precision Size Standards are easy-to-use liquid particle count controls at 2000 particles per mL.
The Ezy-Cal* product line meets all of the unique and demanding requirements of the contamination control laboratory in modern industries. The product is designed for regular use in liquid particle counters to verify instrument calibration before each use. This assures reproducibility of the particle counter by permitting a continuous record of its performance using a NIST traceable microsphere suspension with a precise concentration.

A ready-to-use (no dilution required) particle size standard for validating optical particle counters
A magnetic stir bar is included in each bottle for clean, convenient and direct sampling by the instrument
The aqueous suspension medium contains a combination of dispersing agents, which help to keep the particles from clumping or sticking to flow surfaces in the particle counter
Particle diameters are traceable to the Standard Meter through the National Institute of Standards and Technology (NIST). Each package contains a Certificate of Calibration and Traceability to NIST.

part no nominal diameter bottle size mean diameter size uniformity
6002 2,0µm 100ml 1.999µm ± 0.020µm σ = 0.022µm, 1.1% CV
6005 5,0µm 100ml 5.010µm ± 0.035µm σ = 0.05µm, 1.0% CV
6010 10,0µm 100ml 10.00µm ± 0.08µm σ = 0.09µm, 0.9% CV
6015 15,0µm 100ml 15.02µm ± 0.15µm σ = 0.15µm, 1.0% CV
6020 20,0m 100ml 19.99µm ± 0.25µm σ = 0.20µm, 1.4% CV
6025 25,0µm 100ml 24.61µm ± 0.22µm σ = 0.27µm, 1.1% CV
6030 30,0µm 100ml 29.75µm ± 0.56µm σ = 0.42µm, 1.4% CV
6050 50,0µm 100ml 50.2µm ± 0.3µm σ = 0.5µm, 1.0% CV
6070 70,0µm 100ml 69.1µm ± 0.9µm σ = 0.8µm, 1.2% CV

Composition: Polystyrene
Concentration: 2000 particles/mL ± 10%
Density [Particle]: 1.05g/cm3
Refractive Index :1.59 at 589nm (25°C)
Size: 100mL
Contents: Polystyrene microspheres in water
Additive: Trace amount of surfactant to inhibit agglomeration and promote stability
Stability Product stable for a minimum of three months
Includes: Certificate of Calibration and Traceability to NIST, Material Safety Data Sheet (MSDS)
Storage Requirements: Store between 4° and 30°C. Do not freeze the particle suspension. Store upright and keep bottle tightly sealed to avoid contamination. Throughly disperse per protocol prior to use.



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