6020CLPM9 INT STD SOLN, 125mL 5190-8375 add HF and then fume

add HF and then fume off silica by adding H2SO4 and heat to SO3 fumes - dense white fumes)

Interference Check Solutions (ICS) are used to confirm that interfering elements likely to be encountered in environmental samples do not cause incorrect measurements of analyte concentrations

where simply measuring the total amount of an element is insufficient

CGPR1-30ML

CGHG10-500ML

6020CLPM9 INT STD SOLN, 125mL 5190-8375 add HF and then fumeDescription Intended use Internal standard solution for use with EPA method 6020 Read more Internal standards can significantly improve the accuracy of the analytical data, as an internal standard provides a reference that can be used to correct for variability between the calibration standards and the samples. The most common example is correcting for matrix differences between the calibration standards and samples, and the key criteria for using an