Where do I find the information pertaining to what is in each interference check standard so that I can verify that I am getting the correct solution for what I need.

That information should be updated on the product page now.

what analytes are in ICP-MS-IS-2-100?

This standard contains Bi, In, Sc, Tb, Y @ 100 µg/mL in 2% HNO3.

Can you please provide what metals are in this solution and at what level?

This solution contains the following components:\r\nElement Concentration Element Concentration\r\nAl 1000 mg/L K 1000 mg/L\r\nCa 3000 S 1000\r\nFe 2500 C 2000\r\nMg 1000 Cl 20,000\r\nNa 2500 Mo 20\r\nP 1000 Ti 20

What method is this standard used for? Do you have a list of your interference standards and their associated EPA method?

The standards that start with part numbers HPM-ICS are all for general use on ICP-MS methods such as 200.8 or 6020. They contain the full list of elements recommended for interference checks. The solutions that start with INFCS are various combinations of commonly used elements and concentrations to apply to specific situations. Generally speaking, you should use the solution that shows that your samples are free from interferences with the elements and concentrations that are encountered. Your regulating body should be able to give any specific guidance that they may have as to what is required for use.

I\'m running EPA method IO3.5 on ICP-MS and i\'m unsure of which Interference check standard is appropriate for this method. Do you have a list of what methods each of your INFCS\'s are used for?

The standards with part numbers HPM-ICS are generally appropriate for all ICP-MS operations. The part numbers starting with CLP-INF are specific to the CLP methods. All other interference check solutions are just different combinations of elements and concentrations. We are not familiar with IO3.5 and are not aware of any particular requirements for the interference check standard that may be required for that method. If none are specified you should be able to use the one listed above. The determining factor in which one you use should be based on the level of the analytes that you expect to see in your samples.

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