noun, noun which may take the genitive case particle 'no'
maximum amount; greatest quantity; largest dose
Used for the highest possible quantity, dose, or capacity in technical and everyday contexts.
この薬の1日の最大量は3錠です。
The maximum daily dose of this medicine is three tablets.
この容器の最大量は5リットルです。
The maximum capacity of this container is five liters.
最大限 means 'to the maximum extent' or 'maximum limit', often used adverbially, while 最大量 refers specifically to a measurable quantity.
Compound of 最大 (maximum) + 量 (amount, quantity).