Poison & Deleterious Handler

A Japanese-language study app for Japan's Poisonous and Deleterious Substances Handler exam (毒物劇物取扱者), general category.

Please note: the interface, the questions and every explanation are in Japanese. Japanese reading ability is required.

■ What it is
112 original questions written to the published exam categories and question counts. The 40 questions based on law were machine-checked against the current articles in e-Gov, the Japanese government's official legislation database.

■ The law is re-checked against the source every week
The articles behind the legal questions are matched by machine against the current text in e-Gov every week. A question whose article changed in an amendment is flagged, reviewed, and fixed without an app update.

■ Pass or fail is decided by your weakest subject
In Tokyo the exam requires at least 40% in every subject and 60% overall (criteria differ by prefecture), so one subject under 40% fails you. The app scores you by subject against those thresholds and names the subject you are short on.

■ An explanation for all five choices
Every one of the five choices carries its own explanation, not just the correct one, so you learn why a choice is wrong rather than memorise the answer.

■ The statute behind the 40 legal questions
The 40 questions based on law show the underlying article from e-Gov, so you can verify the explanation against the law itself. Chemistry and identification questions show a summary of their source.

■ Mock exams in the real format
Four subjects, as in Tokyo (10 questions each): law, basic chemistry, properties and storage, and identification and handling. A half mock of 20 questions and a full mock of 40 questions matching the Tokyo exam structure, with a subject-by-subject breakdown.

■ About the qualification
The qualification is based on Japan's Poisonous and Deleterious Substances Control Act, and each prefectural governor runs the exam. It qualifies you as the handling manager at premises that make, import or sell these substances; this app covers the general category, which covers all of them. Question counts and pass criteria differ by prefecture; this app follows Tokyo. Exam dates and procedures can change, so confirm them with your prefecture.

■ Offline and private
Android 8.0 or later. Questions are bundled in the app, so you can study offline. The app goes online only for question corrections and purchases. There is no account to create, and your study record stays on the device.

■ What is free
10 drill questions in total, one half mock exam (20 questions), and 3 days of the auto-play review mode. The allowance does not reset daily. A single in-app purchase unlocks the rest. It is not a subscription, and there are no ads. See the In-app purchases line on this page.

■ Sources and relationship to government bodies
・Run by each prefecture (pharmaceutical affairs division). Example: Tokyo Metropolitan Government Bureau of Public Health https://www.hokeniryo.metro.tokyo.lg.jp/anzen/iyaku/sonota/d_g/shiken
・e-Gov law search, Poisonous and Deleterious Substances Control Act https://laws.e-gov.go.jp/law/325AC0000000303
・e-Gov law search, Enforcement Order of the Act https://laws.e-gov.go.jp/law/330CO0000000261
・e-Gov law search, Enforcement Regulations of the Act https://laws.e-gov.go.jp/law/326M50000100004
・Ministry of Health, Labour and Welfare https://www.mhlw.go.jp/

This is an unofficial study app made by Particles and Waves. It is not affiliated with, endorsed by, or representative of any prefecture, the Ministry of Health, Labour and Welfare, or any other government or examining body, and it does not guarantee a pass.

Questions are original work based on the Act, its order and regulations, and the exam format published by the prefectures. They are not reproductions of past exam papers.

English text prepared 2026-09-24 from the Japanese listing, verified against the shipping app.