Malachite green (LMG) is used as a detection method for latent blood in forensic science. Hemoglobin catalyzes the reaction between LMG and hydrogen peroxide, converting the colorless LMG into malachite green. Therefore, the appearance of a green color indicates the presence of blood. In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purposes. In 2005, analysts in Hong Kong found traces of malachite green
The Malachite Box (18 January 1939), "Izvestia" (4 April), "Pravda" and "Industria Sotsialisma" (July). However the critics disagreed on the question of authorship. Some considered "The Malachite Box" pure folklore, others thought of it was a literary work penned by Bazhov. The author himself tried to avoid the issue, joking that "questions such as these should be left to scholars". At present Bazhov's tales are generally accepted as his own literary work based on the Urals folklore. The editor of "Izvestia" called "The Malachite Box" "a valuable contribution to the Soviet fiction" and noted that "the vividness of expression and poetic richness turn