Looks like canada carbon (CCB) has nuclear grade !!!

I hope that we hear the same soon for ZEN.

October 15, 2013 (Source: Marketwired) – Canada Carbon Inc. (the “Company”) (TSX VENTURE:CCB) is pleased to announce the following results from additional chemical characterization of the purified graphite concentrate from its 100% owned Miller hydrothermal lump/vein graphite property. The objective of this additional chemical characterization was to quantify concentrations of impurities in the Miller graphite concentrate and to provide analytical results with lower relative errors than can be achieved using conventional combustion infrared detection techniques.

A sample of graphite concentrate that was purified by SGS Minerals Services in Lakefield (Refer to NR of July 23th, 2013) was submitted for glow discharge mass spectrometer (GDMS) analysis. The results of the GDMS analysis that was conducted by Evan Analytical in Liverpool, New York are presented in the table below. The primary advantages of GDMS are its ability to quantify impurities at trace concentrations in high-purity inorganic solids, and to quantify concentrations of up to 73 contaminant chemical elements in a single analysis. The majority of the contaminant elements in the purified Miller graphite concentrate yielded concentrations that were below the analytical detection limit for each, typically at 0.5 parts per million (“ppm”) or grams per tonne (“g/t”), or less. The sum of the concentrations of all elements yielded a concentration of less than 350 ppm (or g/t), which by difference translates to an exceptional concentrate grade of 99.965% total carbon (“C(t)”). Please refer to the Note accompanying Table 1.

TABLE 1: Measured trace element concentrations in graphite by GDMS

Note: Only 34% (116 ppm) of the total reported impurity content (approximately 350 ppm) arises from actual measured values (tabled here). The concentrations of 56 elements were included in the total contaminant level calculation by using their limit of detection concentrations (not shown), as the measured value was less than the limit of detection, but could not be assumed to be zero. In this way, 200 ppm of the reported net contaminant level was contributed by just two elements with the highest detection limits, Fluorine and Tantalum, whose detection limits are 100 ppm each, but which may be present at much lower concentrations than their detection limits. The total contaminant level of 350 ppm therefore represents the estimated upper limit for the total contaminant concentration, and the true value may be less than 350 ppm.

These exceptional purity results for graphite obtained with a non-optimized flotation and purification process further support earlier indications that the graphite from the Miller deposit may be suitable for applications requiring ultra-pure grades, such as some core components of nuclear reactors. One such nuclear application criterion was evaluated, as follows.

- See more at: http://investorintel.com/graphite-graphene-news/canada-carbon-surpasses-purity-threshold-nuclear-graphite/#sthash.KBTS2ka7.dpuf