M

20 Entries in this category

MAK

Maximum workplace concentration, i.e. the value that, according to current knowledge, is tolerated over 8 hours a day, 5 days a week, for a working life without harmful effects

Malachite green

Basic triphenylmethane dye. Effective against many parasites, fungi, protozoa and ciliates.

Malachite green G

Basic triphenylmethane dye, similar to malachite green

Masotene

Trichlorfon: Insecticide and broad-spectrum wormicide. Highly toxic

Mebendazole

Potent anthelmintic from human medicine

meningitis

Meningitis

Meristem

Plant formation tissue that provides new tissue through continued cell division

Methyl orange

pH indicator with envelope at pH 4 - 5 from red to yellow

Methyl violet 10B

Crystal violet - basic triphenylmethane dye, similar to malachite green

Methylene blue

Alkaline, dark blue dye in aqueous solution

Methylmethionine sulphonium chloride

„Vitamin U” - see non-vitamins

Methylparaben

Fungicide, Bactericide - Nipagin

Metronidazole

Active substance from the group of nitroimidazoles

molal

Measure of concentration. Substance to be dissolved [mol] in solvent [kg]

molar

Measure of concentration. Dissolved substance [mol] in the solution [l]

mole

The only purely chemical SI unit. Indicates the number of particles contained as a unit of quantity.

molecule

Covalent (i.e. non-salt-like) compound consisting of 2 or more atoms

Monocotyledons

Monocotyledonous plants - e.g. grasses

MS222

Local anaesthetic used as an anaesthetic for amphibians and fish. When overdosed, it can be used to kill these animals painlessly.

mutagen

Adj.: mutagenic - Subst.: mutagenic agent