The EZkem blog is your go-to resource for laboratories in the spectroscopy fields — including flow analysis and cyanide analysis.
Part 1: Aspects of Peristaltic Pump Tubes and Pump Series
Part 1: Overview of the Peristaltic Pump In this series of articles we will discuss peristaltic pumps. The peristaltic pump is the most common delivery device for chemical solutions in most types of Autoanalyzers such as OI Analytical, Alpkem, Lachat, Seal, and Skalar. The most common and largest manufacturer of this type of pump is [...]
Analysis of Clean Water Act
The MUR of 2012 Clean Water act allows the replacement of Manual Cyanide Distillation for WAD and Available Cyanide. This action makes available at 40 CFR part 136 an additional test procedure for measurement of available cyanide. Currently approved methods for measurement of available cyanide are based on sample chlorination. Method OIA–1677 uses a flow [...]
Changing the Size of Sampling Pump Tubes
As we mentioned in our last blog article, changing pump tube sizes for a method might be necessary when changing an analytical range or when developing new chemistries. The EPA has even weighed in on this matter with their "Flexibility to Modify CWA Methods" memorandum. They go on to outline specific modifications that no longer require case [...]
Pump Tubing Dimensions & Flow Rate
Our new blog series will be covering all aspects of peristaltic pump tubing and will be addressing questions and topics concerning peristaltic pump tubes and the Ismatec peristaltic pump. Below is a chart we refer to to understand the sizes and flow rates between pump tubes. This can be useful when developing new chemistries and changing the [...]
Upgrade to a Cetac ASX-520 Random Access Autosampler
You can upgrade your Cetac Autosampler from a 500 or 510 model to the current ASX-520 model. EZkem has the ability to take your old Cetac 500 or 510 autosampler model and upgrade it to the current 520 model. The older models required specific processors for each platform. The nice thing about the 520 autosampler is that it [...]
Cadmium Coils and the Analysis of Nitrate
This post is designed to offer assistance to users of cadmium coils in the analysis of Nitrate. Since the use of the cadmium coil is fairly complicated and because there are many possible applications, we want to discuss the different sizes that are available as well as the advantages of the various sizes. Cadmium coils [...]