graphite disc electrode graphite electrde

1.graphite rod electrode and plate electrode in the great 20 elements,each content, however the largest 1ppm.
2.graphite rod electrode and the electrode elements 20, the total content of no more than 6ppm.
3.tested 10 samples of oil (oil with imports like 0ppm standards), the standard deviation for each element are in line with the united states baird provided    the requirements of the standard deviation.
4.10 0ppm blank oil samples of each element, the average content of all of 0-1ppm.
5.ruler with standard detection electrode and the size of the electrode rods are in accordance with technical requirements. the large number of products have    been sold all over the country, and by domestic users alike
the products have been sold to a large number of railways, mines, aircraft and petrochemical sectors, domestic users alike
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