400.2-327. (1) Under a sale on approval unless otherwiseagreed
(a) although the goods are identified to the contract therisk of loss and the title do not pass to the buyer untilacceptance; and
(b) use of the goods consistent with the purpose of trial isnot acceptance but failure seasonably to notify the seller ofelection to return the goods is acceptance, and if the goodsconform to the contract acceptance of any part is acceptance ofthe whole; and
(c) after due notification of election to return, the returnis at the seller's risk and expense but a merchant buyer mustfollow any reasonable instructions.
(2) Under a sale or return unless otherwise agreed
(a) the option to return extends to the whole or anycommercial unit of the goods while in substantially theiroriginal condition, but must be exercised seasonably; and
(b) the return is at the buyer's risk and expense.
(L. 1963 p. 503 ยง 2-327)