Graphite tube Cláusulas Exemplificativas

Graphite tube. The graphite tube is the core of the furnace body, and it has a direct impact on the measurement results. Generally, for the first using, several times of “Null burning” should be done until the absorbance is close to zero. Contaminations may exist after a period of time unused, to obtain accurate measurement results, several times of “Null burning” also should be done before reuse. Besides, pay attention to the usage frequency. Generally, a temperature calibration is suggested after about 50-80 times use. If the measurement repeatability becomes poor and the sensitivity varies greatly, it may be the service life of the graphite tube exhausted, and it’s time to replace with a new one.