The EZkem blog is your go-to resource for laboratories in the spectroscopy fields — including flow analysis and cyanide analysis.
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 [...]
Cadmium Coils and Reagent Solutions
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 [...]
Cadmium Coils and Surfactant Buildup
Old Surfactant Solution Causes Problems in Cadmium Reduction Coils In our earlier blog posts we have discussed many reasons for possible loss of cadmium coil reduction efficiency. Along with metal contamination, nitrate contamination and gas contamination, we have also seen old surfactant solution cause problems in cadmium reduction coils. Because of the unstable nature of [...]
OTCR Cadmium Coil Common Sizes
Getting the Correct OTCR Cadmium Coil for Your Flow Analyzer In our cadmium coil blog series, we wanted to address the difference between our 12 inch and 24 inch OTCR (Open Tubular Cadmium Reaction) cadmium coils. The 12-inch coil was originally designed to be used on RFA instruments that used a slower pump speed and [...]
Metal Contamination Reduces Cadmium Coil Efficiency
Last week, we discussed the loss of reduction efficiency in cadmium coils caused by nitrate contamination in ammonium chloride. This week we are examining metal contamination and cadmium coil efficiency. This type of contamination occurs in the sulfanilamide solution. Of course, sulfanilamide solution contains N-naphthylethylenediamine dihydrochloride which serves to bind heavy metals. If metal exists [...]