Alpkem
The U.S. EPA and ASTM cyanide analysis methods based upon gas diffusion amperometry do not require a preliminary acid distillation step and are now approved as amendments to 40 CFR 136 Clean Water Act Methods on their website as published in the 2012 Method Update Rules (MUR) in the Federal Register. These methods were specifically [...]
Flow Analyzer System Restoration and Innovation Have you ever found yourself staring at your flow analyzer wishing, that like a vintage automobile, it could be fully restored? Though SFA/FIA technology has actually changed very little over the last few decades, it is usually more cost effective to restore your existing equipment than to spend more [...]
There are several different types of materials used for mixing manifold cartridges in autoanalyzers. One of the two most common manifold materials utilized is clear acrylic which is often considered optimal due to its transparent quality giving greater visibility to the chemical reagents flowing inside the mixing tees. The other is polysulfone, a significantly darker [...]
Flanged Fittings are Better Than Ferrules for Alpkem, Perstorp or OI Analytical Autoanalyzers Autoanalyzers vary by manufacturer on what type of fittings they use to secure tubing into the reaction manifold as well as the other various fittings on the system. Some just use sleeves where the tubing simply slides over a nipple or some [...]
Docket ID No. OW-2003-0070 Comments Related to the Proposed Cyanide Determination Methods Federal Register / Vol. 69, No. 66 / April 6, 2004 / Proposed Rules, pp. 18166 – 18226 Prepared by: Emil Milosavljevic, Ph.D. and Ljiljana Solujic, Ph.D. Distillation-based methods for determination of operationally defined cyanide have very limited application because of the serious interferences from the species likely [...]
By now, most of us have heard that we shouldn’t put plastic in the microwave, though many still do it without a thought. A quick search on the internet for phthalates turns up key phrases like endocrine disrupters and insulin resistance, baby bottles, water bottles and so on that all seem to be leading us [...]
We’re excited to announce the launch of our newly updated EZkem blog on our blog! We encourage you to bookmark our page or subscribe to our RSS feed. We are constantly dialoging with our clients about parts, repairs, reconditioned system builds and any questions they have to keep their lab running smoothly. Through our blog [...]
Used to help liquids flow through autoanalyzer tubing more easily and to help facilitate mixing, surfactant is a necessity for flow analyzers. Surfactant has been used since autoanalyzers were constructed and comes in many varieties, but I prefer basic Brij-35 and Dowfax 2A1. These two, tried and true surfactants were the mainstay for nearly all [...]
As solutions flow through an autoanalyzer system the debubbler is a key component in providing the opportunity to evaluate the condition of the reagents and ultimately the sample. It’s through the debubbler that we can see if the bubble patterns are correct, if there is a block in the cartridge causing surging, how well the [...]
Gas diffusion modules are used in autoanalyzers whether segmented flow analysis (SFA), sometimes referred to as continuous flow analysis (CFA), or flow injection analysis (FIA). The purpose of the gas diffusion module is to function as an in-line cleanup eliminating particulates, potential ionic interferences and chemical complexes. The target analyte permeates through the membrane into a [...]
