How to check the concentration of quality control samples? quality control

      

　　How to check the concentration of quality control samples?

　　The concentration of environmental quality control samples is different every month. If you need to know the concentration of these quality control samples before purchasing quality control samples, you can consult the online sales of the National Standard Products Network or the phone number 4008772328. Customer service or phone can only check the concentration value of the quality control samples being sold, and the concentration of past quality control samples can be clicked-

　　Extended reading: A quality control sample is generally used to check whether your curve is standard. It is a sample with a known concentration and the concentration has positive and negative errors, such as 3.240 ± 0.012 milligrams per liter. You bring it into your curve for analysis and see if the data is within the error range of the concentration of the quality control sample. If it is within the range, it can show that there is no problem with your curve and the corresponding other data is correct. The standard material is also a sample with a known concentration, but its concentration is generally an integer, such as 1000 micrograms per liter, which is used to configure the standard curve

　　Internationally, the English names of reference materials and standard samples are "Reference Materials", and ISO/REMCO is responsible for this work. In our country, the metrology system calls "Reference Materials" "Reference Materials", while the standardization system is called "Standard Samples". In fact, there are many similarities between the two, but there are also some minor differences.