Peristaltic Pump Troubleshooting, Preventative Maintenance and Repair The peristaltic pump is a very important component to the proper operation of an autoanalyzer instrument. If it is not functioning properly it is possible to have problems with reproducibility, accuracy, and prematurely worn pump tubing. Signs of a peristaltic pump problem might be observed as poor peak [...]
Various Pump Tubing Materials, Compatibility and Applications Peristaltic pumps rely on compressing and releasing a length of flexible tubing to mimic natural peristalsis seen in many biological systems, using positive displacement to move fluids in a steady and smooth pulsing manner. Instrument Systems will remain contamination-free using peristaltic pump tubes, since the only part of [...]
Peristaltic Pump Tube Sizes by Color Code Determines ID and Ease of Application Uses: As mentioned in this series on Ismatec Peristaltic pumps and Peristaltic pump tubes in general, the advantage with this type of pumping configuration is that the pumps are able to handle heavier and more aggressive fluids. The peristaltic pump tubes have [...]
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 [...]
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 [...]
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 [...]
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 [...]
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 [...]
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 [...]
The age of a reagent solution is extremely important to the effectiveness of the reaction in the coil. Many laboratories, because of time and money constraints, store reagent solutions for long periods of time. For the most part this is acceptable, but there are a few exceptions and restrictions to this practice. NEVER store solutions [...]
