提供从 0.02μm 至 1000μm 各种不同 Size 符合 NIST 的标准件，应用于 KLA/Tencor surface particle counter 、 Air/Liquid/Gas particle counter 之校正及 HEPA 、 ULPA 等 Filter 过滤效率验证，制药厂产品 USP 之确效。 

3000 Series - Nanosphere Size Standards - 20 nm ~ 900 nm (Packaged in l5mL, 1% solids) Product Specifications
Particle Composition: Polystyrene
Particle Density 1 .05 g/cm3
Index of Refraction: 1 .59 @ 589 nm (25°C)
Additives: Contains trace amount of surf actant 
Expiration Date: 24 months 

4000 Series - Monosized Polymer Size Standards (Packaged in l5mL)1.0 μm ~ 160 μm : Particle Composition: Polystyrene
200 μm ~ 650 μm : Polystyrene closslinked with Divinylbenzene, PSDVB (Packaged as dry sphere) 
750 μm, 1000 μm : Polystyrene closslinked with PolymethylnethacryIate, PMMA (Packaged as dry sphere)

8000 Series - Silica Size Standards - 0.5 μm ~ 1.6 μm  (Packaged in l5mL, 2% solids)The Thermo Scientific* 8000 Series Silica Particle Size Standards are monodisperse silica microspheres, NIST traceable size standards.
0.5 μm, 0.7 μm, 1.0μm, 1.6 μm9000 Series - Glass Size Standards - (Package as 1g, Dry)
Thermo Scientific* Duke Standards 9000 Series Glass Particles are dry glass NIST traceable size standards.
2 μm ~ 20 μm : Particle Composition: Borosilicate glass 
30 μm ~ 2000 μm : Particle Composition: Soda Lime glass

COUNT-CAL* Count Precision Standards
COUNT-CAL is a ready to use precision standard designed for regular use in liquid particle counters to verify instrument calibration before each use. This assures the reproducibility of the particle counter by permitting a continuous record of its performance using a NIST* traceable microsphere suspension with a precise concentration.
■Polystyrene microspheres are suspended in an ultra clean diluent
■Concentration is optimized for use in light obscuration particle counters and other low concentration counting applications
■Diameters are traceable to the Standard Meter through the National Institute of Standards and Technology (NIST)
■CC10 and CC25 are ideal for USP 788 and 788 interim testing
Composition : Polystyrene
Concentration : 3000 particles/mL ± 10%
Quantity 6 x 25mL bottles per pack
Available : 2µm 5µm 10µm 15µm 20µm 25µm 30µm 50µm 70µm

EZY-CAL* Count Precision Size Standards
■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)
Composition : Polystyrene
Concentration : 2000 particles/mL ± 10%
Size : 100mL 
Available : 2µm 5µm 10µm 15µm 20µm 25µm 30µm 50µm 70µm