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 by critics and enthusiastically received by readers, including the general populace and the more sophisticated Soviet intelligentsia. Bazhov turned into one of the most famous writers in the Soviet Union. Strangers would greet him on the streets. The critics agreed that "never has the labour of miners, stone-cutters, teemers been celebrate in such a way, neither in verses, nor in prose", and that Bazhov managed to show the essence of the professional skill of the miners. Mikhail Batin complimented its uniqueness, and novelty in the contents and in the form. Favourable reviews on "The Malachite Box" appeared in "Uralsky Rabochy"