(2) Between merchants the reasonableness of grounds for insecurity and the adequacy of any assurance offered shall be determined according to commercial standards.
(3) Acceptance of any improper delivery or payment does not prejudice the aggrieved party’s right to demand adequate assurance of future performance.
(4) After receipt of a justified demand failure to provide within a reasonable time not exceeding 30 days such assurance of due performance as is adequate under the circumstances of the particular case is a repudiation of the contract. [1961 c.726 §72.6090]