particle sampling Articles
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Particle Tubing Transportation to a Particle Counter
The following describes particle behavior mechanisms and will assist in the understanding of sampling difficulties and how to improve the efficiency of sampling using a particle counter. The Stokes number is the ratio of a particle’s radius to the dimension of an obstacle in fluid flow. This is an important factor in determining when a particle in motion will be collected by an obstacle ...
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Removal of ammonium ions by laboratory-synthesized zeolite linde type A adsorption from water samples affected by mining activities in Ghana
Ammonium ion adsorption by laboratory-synthesized zeolite (linde type A; LTA) was investigated in batch kinetics experiments. Synthesized zeolite LTA was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy and particle size analysis. Water samples were taken from the Nyam and ...
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When water suffers from high turbidity, Filtronics is the clear solution
Water loses its transparency and takes on a hazy appearance when it contains a large quantity of suspended solid particles. While even a moderate lack of clarity is noticeable to even casual observers, the average person would probably describe a sample of such water as “cloudy” or “murky.” The technical term – turbidity – is not widely known to laymen outside ...
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Forces and Particles
How a particle travels along tubing between a sample inlet and the particle counter is made messy by a host of physical forces. It’s so messy, validating this sample tubing can be difficult. So what are these forces, what are the losses, and what are the acceptable results? ...
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New Membranes for Environmental, Pharma and Wider Applications
Summary: A new membrane that’s better for your application Choose Gold-coated polyester membranes for: Detecting and characterizing micro-plastics in environmental water samples. Particle analysis by SEM/EDX, FTIR microscopy and Raman spectroscopy. Identification and characterization of micro- and nanoparticles in pharmaceutical fluids and chemical auxiliary agents. Testing for ...
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Hard to Find Filter Configurations
Announcing New Hard to Find Filters Filters have been the go-to method for sampling air in determining particulate contamination. Before I get into the “hard to find” filters, let us talk about filtration. The ideal filter should: be able to capture “everything” down to the nanometer; never plug; be free of the substance that you are measuring, down to nanograms; ...
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What is Batch In-Situ Particle Monitoring?
In this week’s blog, we discuss batch in-situ monitoring. New to liquid particle counting? This blog is for you! The ISPM Batch In Situ Particle Monitors (ISPMs) offer a rapid and cost effective requalification of wet process tools following chemical changes or filter replacement. In these applications, a particle counter is mounted on a cart and moved from one sample location to another. ...
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Evaluation of Sampling and Field-Filtration Methods for the Analysis of Trace Metals in Ground Water
Selected ground water sampling and field-filtration methods were evaluated to determine their effects on field parameters and trace metal concentrations in samples collected under several types of field conditions. The study focused on conditions where traditional approaches may produce turbid samples, which often leads to filtration of suspended particles from the sample before laboratory ...
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Getting the lead out — at the faucet
You might be surprised at where you’ll find a customer’s lead. Lead is making headlines. First, we should note that the current attention is not due to water, air or soil contamination, but from lead contamination recently found in toys and children’s jewelry made in China. This is very frightening for any parent because of the harm lead can to cause in children. How could this happen? ...
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Principles of Solid-Liquid Separation for the Pharmaceutical Industry
Solid-liquid separation is necessary in many industries for compliance, quality control, and efficient production processes. In the pharmaceutical industry, solid-liquid separation is conducted in applications such as biocatalysis, active pharmaceutical ingredient (API) purification, and chromatography, to name a few. The separation process can be carried out through a range of instruments, but ...
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Application of Flow Cytometry for Microbiological Monitoring of Pharmaceutical Grade Water
Online Water Bioburden Analysis As the main excipient for the pharmaceutical industry, water is integral to patient safety and quality of pharmaceutical products (ISPE 2011). Colony Forming Units (CFU) are defined in the pharmacopoeias as the unit for assessing microbiological quality. CFUs are quantified using the traditional Heterotrophic Plate Count (HPC) method, a three to five-day process ...
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Hard to Find Configurations Part 2
Welcome back to the continuation on the “Hard To Find Filters”. Part 2 In the last post I covered the first 2 points of the ideal filer. In this post I will detail points 3, 4 and 5 Point 3 … be pure, down to nanograms, of the substance that you are measuring. Ideally, the filter used to capture particles in air or liquid for analysis, should contain zero of the substance ...
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