The phrase "in sufficient amount" is correct and usable in written English.
It can be used when you want to express that something is present or available in an adequate amount. For example, "The hotel had clean towels in sufficient amount for all of the guests."
Sugar is added in sufficient amount to prevent bacterial action and subsequent spoilage.
But it could take half that time for international aid to arrive in sufficient amount to make a difference.
Protein expression by means of vector construction may facilitate in the synthesis of protein in sufficient amount for characterization, quorum sensing and molecular diagnostic studies.
Many experiments available in the literature show that fibres, when provided in sufficient amount to guarantee an adequate toughness to Fibre Reinforced Concrete (FRC), are significantly effective as shear reinforcement.
Wherefore lest production cease from lack of material, we beg your paternity to send us by the bearer, B., money for buying parchment, ink, a desk, and other things which we need, in sufficient amount that we may suffer no want on your account (God forbid!) but finish our studies and return home with honour.
This suggests that it is possible to maximize the activity of the immobilized enzyme by a proper choice of the pH of the bulk solution and the type of weak acid: The pH in the bulk solution should be close to the optimum pH of the soluble enzyme, and the weak acid should be in sufficient amount and have a pK close to the above optimum pH.
"If the equity capital is there in sufficient amounts and is sufficiently patient and it brings the right incentives then the management talent will follow".
