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PARIO PLUS: Automated Particle Size Analysis

Conventional particle-size analysis operation takes a lot of time and energy. Readings or samplings have to be done by hand, at regular intervals and for up to 24 hours. Because the procedure is manual, it’s prone to errors – which can easily lead to wasted time and effort What’s new with PARIO Plus? PARIO Plus lowers the […]

Conventional particle-size analysis operation takes a lot of time and energy. Readings or samplings have to be done by hand, at regular intervals and for up to 24 hours. Because the procedure is manual, it’s prone to errors – which can easily lead to wasted time and effort

What’s new with PARIO Plus?

PARIO Plus lowers the estimated error from +/- 3% to an incredible +/- 0.5%. And we’ve decreased the measurement time from 8 h to 2.5 h, so you can make even more measurements in less time.

Particle-size analysis, automated

PARIO calculates the particle size distribution by Stokes’ law, with the range of particle sizes spanning from 63 μm to 1 μm.

It allows for unattended, automated operation, with no interference by lab personnel. Just set it up and come back 6 hours later to a finished measurement with all the data you need.

New technology—new possibilities

Conventional soil particle size analysis traditionally had only two options—the extremely archaic option or the extremely expensive option. The older hydrometer (or pipette) method is a long, painstaking, manual process requiring many measurements at precise intervals for up to 24 hours, making it prone to error. The ultra-expensive laser method has accuracy issues because flat soil particles like clay can confound the measurement. Both methods can lead to hours of wasted time and effort.

That’s why we developed a revolutionary new way to reduce the time and effort needed for soil particle size analysis.

Particle size analysis, automated

PARIO calculates the particle size distribution by Stokes’ law, with a range spanning from 63 μm to 2 μm, finally making it easy to obtain a complete particle size distribution curve, instead of just a few measurements at discrete time points.

It allows for unattended, automated operation (with the exception of opening the valve after completion). Just set it up and come back later to a finished measurement with all the data you need.

New method reduces error—and effort

PARIO adopts the same sample prep your lab already uses, so it fits perfectly into your existing workflow. It reduces errors by replacing and automating the lengthy “hydrometer” portion of the process using the new, more accurate “Extended Integral Suspension Pressure Method” (ISP+). This method does not require the insertion of a hydrometer or sampling of suspension volume with a pipette, which disturbs the sedimentation process. Being automatic, it also avoids manual reading or calculation errors. This results in an overall error rate of an incredible 0.5%—lower than any conventional particle size analysis method.

PARIO automatically measures at an interval of ten seconds and continuously records the change of suspension pressure as well as the temperature. This results in highly accurate and continuous particle size distribution curves. The data are automatically evaluated by our new data processing algorithm called the ISP+ method.

The PARIO measuring method is based on Stokes’ law. That means there is no need for soil-specific corrections with transfer functions as required for almost any other automated measurement method, such as laser diffraction or image analysis.

Spend more time on what matters

To save you even more time, PARIO comes with an easy-to-use, all-in-one software solution for automated data inquiry, visualization, evaluation and export. Plus, PARIO, as part of the LABROS system, can be combined with the HYPROPKSAT, or WP4C to completely characterize the physical and hydraulic properties in soil.

All of this serves one goal—to reduce the operating time you spend for particle size analysis, while at the same time improving accuracy. Skip hours of tedious manual measurements, and focus on your research.

The new PARIO soil texture analyzer. Complete particle size distribution curves. Not one particle of wasted time.

Features

  • Get complete particle size distribution curves
  • Calculation of particle size distribution by Stokes’s law
  • Autonomous operation after measurement start (with the exception of opening the valve at measurement end)
  • Lower measurement duration of 2.5h
  • Estimated error: an incredible +/- 0.5%
  • Quasi-continuous resolution of particle size distribution
  • No physical disturbance of suspension during measurement
  • Avoidance of manual reading errors
  • Avoidance of manual calculation errors
  • Temperature dependence automatically integrated in the calculation of particle size distribution
  • Direct measurement of clay content
  • PARIO Plus improvements mean external data errors are less problematic

Specifications

MEASUREMENT SPECIFICATIONS
Particle size Range: 2-63 μm
Approximate error in mass fraction detection PARIO Classic: ±3.0%
PARIO Plus: ±0.5%
Pressure measurement Accuracy: ±1.0 Pa
Resolution: ±0.1 Pa
Typical particle mass 25−50 g per 1-L suspension
Typical duration of measurement PARIO Classic: 8.0 h
PARIO Plus: 2.5 h
Measurement interval 10 s
Estimation of clay content Derived from integrated particle mass in effluent
Estimation of sand fraction Sand fraction estimated by sieve data
COMMUNICATION SPECIFICATIONS
Power requirements USB 5 V/100 mA
Computer compatibility Microsoft Windows 10
PHYSICAL SPECIFICATIONS
Glass cylinder Height: 450.0 mm (17.7 in)
Diameter:
Inner: 59.0 mm (2.3 in)
Outer: 67.5 mm (2.7 in)
Volume: 1,000 cm3 (61.0 in3)
Material: Borosilicate glass 3.3
PARIO device Height: 293.0 mm (9.1 in)
Diameter: 80.0 mm (3.2 in)
Material: Polyoxymethylene plastic (POM) and stainless steel
Volume of suspension 1,000 mL
Operating temperature Minimum: 15 °C
Typical: 20 °C
Maximum: 35 °C
Maximum tolerable temperature change during measurement ±1.5 °C
Required external measurements PARIO Classic: Content of organic matter (if OC is destroyed)
Sand fractions (from wet sieving)
Mass of dispersion salt in total suspension volumePARIO Plus: Mass of dry matter in discharged subsample
Sand fractions (from wet sieving)
Mass of dispersion salt in total suspension volume
Cable type USB 2.0; 500 mA for receiving port
COMPLIANCE Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
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