Strictly speaking, TXRF does not require Calibration. GNR's TX 2000 TXRF spectrometer is delivered with factory calibration, via precise instrument calibration process. In the day-to-day routine analysis, TXRF quantify the unknown substance by incerting the internal sandard into the sample solution. The common internal standard in TXRF measurement is gallium.
In other words, the general drift error in TXRF won't affect the measurement result.
ACTTR Technology represents the assurance grade gallium standard, PLGA2-2Y, which is a 125ml packaging. It is a necessary product for TXRF.