Unless otherwise agreed all goods called for by a contract for sale must be tendered in a single delivery and payment is due only on such tender but where the circumstances give either party the right to make or demand delivery in lots the price if it can be apportioned may be demanded for each lot.
Md. Code Ann., Com. Law § 2-307
Known as the Maryland Uniform Commercial Code
The act spans §§ 1–9 (556 sections).
Official source: Maryland General Assembly. Reproduced from public-domain Maryland statutes; confirm against the official source for the current text. Not legal advice.