(952) 894-8737(800) 718-8737

Blog Archives

Particle Size Analysis utilizing a Microtrac Model S3500 laser diffraction

Particle size analysis measuring capabilities ranging from 0.24 to 2800 micron using Leeds & Northrup Microtrac Model S3500 Particle Size Analyzer. Standard resolution output may be expressed in % passing or % retained and includes differential and cumulative graphical data. Materials that are soluble in water or require special suspension fluids are subject to an additional fee per sample. We will need approximately one gram or more of sample to perform a particle size analysis.

Read Full Article

Particle Size Analysis utilizing a Sieve Shaker

Particle size analysis tests may be performed using U.S. Standard Size designated test sieves Number 8 through Number 400. This corresponds to particle size diameters of 2.36 mm (Number 8) through 38 micron (Number 400). One of two types of sieve shakers may be employed: Gilson SS-15 – for analysis using U.S. Sieves #200 and larger. W.S. Tyler Ro-Tap – for analysis using U.S. Sieves below #200. Materials that retain static surface charges may be difficult to analyze with repeatability. We will need a minimum of fifty grams to perform a particle size analysis on the Ro-Tap or Gilson sieve shaker.

Read Full Article

Particle Size Analysis utilizing a Microtrac Model X100 laser diffraction

Particle size analysis measuring capabilities ranging from 0.10 to 700 micron using Leeds & Northrup Microtrac Model X100 Particle Size Analyzer. Standard resolution output may be expressed in % passing or % retained and includes differential and cumulative graphical data. Materials that are soluble in water or require special suspension fluids are subject to an additional fee per sample. We will need approximately one gram or more of sample to perform a particle size analysis.

Read Full Article

Particle Size Analysis utilizing a COULTER MULTISIZER IIe or III

The Coulter Principle, also known as ESZ (Electrical Sensing Zone Method), the Multisizer IIe and 3 Coulter Counter provides number, volume, mass and surface area size distributions in one measurement, with an overall sizing range of 0.4 to 1,200 microns (practical limits for most industrial powders are from 0.06 to 200 microns). Its response is unaffected by particle color, shape, composition or refractive index. Particles suspended in a weak electrolyte solution are drawn through a small aperture, separating two electrodes between which an electric current flows. The voltage applied across the aperture creates a “sensing zone”. As particles pass through the aperture (or “sensing zone”), they displace their own volume of electrolyte, momentarily increasing the impedance of the aperture. This change in impedance produces a pulse that is digitally processed in real time. The Coulter Principle states that the pulse is directly proportional to the tri-dimensional volume of the particle…

Read Full Article