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Gobiocypris Rarus Adopted as Eco-Tox Test Model Species

The first national standard on eco-toxicity testing method that adopts a Chinese endemic species (Gobiocypris Rarus) as the test organism was published on 18 Sep 2013. GB/T 29763-2013 Chemicals - Rare Minnow (Gobiocypris Rarus) Acute Toxicity Test will come into force on the 30th of Mar 2014.

In the past, eco-toxicity testing methods relied on the use of foreign species which have strong historical testing precedents worldwide. The use of foreign species is however not optimal as they lack the evolutionary adaptations shaped by the selective pressures of the native Chinese ecosystem . Several drafting committees, e.g. the Shanghai Academy of Public Measurement (APM), the Chemical Registration Center (CRC-MEP), Institute of Hydrobiology, Chinese Academy of Science, etc. have after years of close collaboration and concerted effort compiled this standard to address this shortcoming and improve the eco-tox testing standards.

GB/T 29763-2013 is not a mandatory standard and industry is in no way mandated to utilize Gobiocypris Rarus when generating test data under China new chemical substance notification (China NCSN, a.k.a China REACH). However recognizing the appropriateness of this test, the Nanjing Institute of Environmental Science directly under the MEP (one of the ten testing institutes accredited to provide eco-toxicological testing data for China NCSN) has made the Gobiocypris Rarus its default test species.

Additionally another national standard for eco-toxicity testing method, GB/T 29764-2013 Chemicals-fish (Oryzias latipes, d-rR Medaka) Early Life Stage Toxicity Test, has been published and will be effective the same date as GB/T 29763-2013 on 20 Mar 2014.

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