Thermo Scientific™

Validex™ Count Precision Size Standards

Catalog number: CRS-05
Thermo Scientific™

Validex™ Count Precision Size Standards

Catalog number: CRS-05
Validate the performance of liquid particle counters with Thermo Scientific™ Validex™ Count Precision Size Standards. Excellent for instrument calibration and verification in the drinking water industry and for low level liquid particle counting and calibration, standards contain NIST™-traceable polymer particles packaged in ultrapure water at concentrations ideal for use in validating the performance of liquid particle counters.

Particle counting in the drinking water industry has rapidly become an indispensable technology for optimizing water quality. The majority of particle counters used in the drinking water industry operate on the principle of single particle light obscuration.
 
Catalog Number
CRS-05
Unit Size
Each
Diameter (Metric)
5 μm
Price (USD)
Full specifications
AdditiveContains trace amount of surfactant
Concentration1000 particles/mL ± 10%
ContentsPolymer particles in water
DescriptionDesigned specifically for the drinking water industry to validate the performance of liquid particle counters.
ColorWhite or Colorless
For Use With (Application)Liquid Particle Counter Validation
MaterialPolystyrene
Product TypeCount Control Particles
IncludesCertificate of Calibration and Traceability to NIST
Particle Density1.05g/cm³
Quantity500 mL
Refractive Index1.59 at 589nm (25°C)
Size Distribution<3
StabilityProduct stable for a minimum of 3 months
Diameter (Metric)5 μm
Unit SizeEach
Catalog Number
Unit Size
Each
Diameter (Metric)
10 μm
Price (USD)
Full specifications
AdditiveContains trace amount of surfactant
Concentration1000 particles/mL ± 10%
ContentsPolymer particles in water
DescriptionDesigned specifically for the drinking water industry to validate the performance of liquid particle counters.
ColorWhite or Colorless
For Use With (Application)Liquid Particle Counter Validation
MaterialPolystyrene
Product TypeCount Control Particles
IncludesCertificate of Calibration and Traceability to NIST
Particle Density1.05g/cm3
Quantity500 mL
Refractive Index1.59 at 589nm (25°C)
Size Distribution<3
StabilityProduct stable for a minimum of 3 months
Diameter (Metric)10 μm
Unit SizeEach
Showing 2 of 2
Catalog NumberSpecificationsUnit SizeDiameter (Metric)Price (USD)
CRS-05Full specifications
Each5 μmRequest A Quote
AdditiveContains trace amount of surfactant
Concentration1000 particles/mL ± 10%
ContentsPolymer particles in water
DescriptionDesigned specifically for the drinking water industry to validate the performance of liquid particle counters.
ColorWhite or Colorless
For Use With (Application)Liquid Particle Counter Validation
MaterialPolystyrene
Product TypeCount Control Particles
IncludesCertificate of Calibration and Traceability to NIST
Particle Density1.05g/cm³
Quantity500 mL
Refractive Index1.59 at 589nm (25°C)
Size Distribution<3
StabilityProduct stable for a minimum of 3 months
Diameter (Metric)5 μm
Unit SizeEach
CRS-10Full specifications
Each10 μmRequest A Quote
AdditiveContains trace amount of surfactant
Concentration1000 particles/mL ± 10%
ContentsPolymer particles in water
DescriptionDesigned specifically for the drinking water industry to validate the performance of liquid particle counters.
ColorWhite or Colorless
For Use With (Application)Liquid Particle Counter Validation
MaterialPolystyrene
Product TypeCount Control Particles
IncludesCertificate of Calibration and Traceability to NIST
Particle Density1.05g/cm3
Quantity500 mL
Refractive Index1.59 at 589nm (25°C)
Size Distribution<3
StabilityProduct stable for a minimum of 3 months
Diameter (Metric)10 μm
Unit SizeEach
Showing 2 of 2
Features:
  • Composition of suspension optimized to promote dispersion of particles
  • Contains 500mL of suspension at a nominal concentration of 1000 particles per mL
  • Stir bar included in the bottle to aid dispersion
  • Certified concentration
  • Ultraclean diluent
  • No dilution required
  • Sample directly from bottle to avoid contamination
  • Larger volume for appropriate testing

Contents & Storage

Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.