Traceable B1 & B2 Lots

Traceability begins before the purchase order

A traceable vitamin purchase starts with a clear connection between the product requested, the lot offered and the documentation reviewed. A general product name is not enough when inventory includes distinct batches with different dates or analytical results. Procurement should identify the proposed batch in the quote request and give QA the same reference. The public inventory records provide that initial map for B1 and B2. They do not replace the shipment or receiving records needed to maintain traceability through the buyer's operation. Establish the identifiers early so a later change in allocation does not silently disconnect the approval from the material supplied.

The B1 record is one documented batch

Vitamin B1 is offered as thiamine mononitrate from Huazhong Pharmaceutical Co., Ltd., batch Y02202501042, with a documented position of 1,500 kg. Manufacture is January 26, 2025, and expiry is January 25, 2028. The published independent Sigma assay is 99.3%, separate from the manufacturer's 99.5% assay. These details should remain linked when preparing an internal supplier review. A procurement spreadsheet should not strip away the batch reference and leave only an assay percentage. Request the original quality documents and confirm that the final quote and shipment identify the same batch your team evaluated.

The B2 record must preserve two identities

Riboflavin from Ruzhou Kunhe Biotechnology Co., Ltd. is divided into lot 2025052801 at 1,000 kg and lot 2025052901 at 500 kg. The first lot was manufactured May 30, 2025, expires May 29, 2028, and has a 98.88% Sigma assay. The second was manufactured May 31, 2025, expires May 30, 2028, and has a 99.65% Sigma assay. A combined order can include both lots, but the buyer should retain separate quality and inventory references. If QA approves only one lot or a production requirement calls for a single lot, state that condition in the commercial discussion.

Carry the approved identity into receiving

Before shipment, confirm the allocation, quantity and documentation that will accompany the order. At receiving, the buyer's procedure should compare the product and lot identifiers on the material with the approved purchase and quality records. The published packaging is palletized 20 kg fiber drums in a South Carolina warehouse; confirm any additional label or shipment-record requirements with Duke rather than assuming a particular format. If a discrepancy appears, follow the buyer's hold and review process before releasing material. Maintaining traceability is an operational task that continues after the website inquiry, not a claim fulfilled solely by listing a lot number online.

Use dates and records in ongoing planning

Manufacture and expiry dates support remaining-shelf-life checks, production scheduling and stock allocation. Compare the documented dates with your anticipated receiving date and consumption plan, particularly when buying for safety stock. Keep reviewed certificates and independent reports associated with the lot throughout your internal inventory system. If purchasing changes the order quantity or substitutes a different lot, verify whether additional QA review is required. Qualified buyers can request the full technical package and ask specific traceability questions before commercial commitment. The current availability is subject to prior sale, so a documented lot record should not be interpreted as a reservation or a guaranteed future stock position.

Manage allocation changes as a review event

Inventory can change between an initial inquiry and a final purchase commitment. If the quantity or proposed lot changes, update the commercial record and ask QA whether the existing approval still applies. This is particularly important for B2 because the two lots have distinct reported results and dates. Do not allow a total stock figure to hide a substitution in the material under review. Confirm the final allocation before placing the order and carry the confirmed identifiers into receiving instructions. The website's published lot map helps start that conversation, but the buyer and seller must establish the actual shipment references through the commercial process.

A traceability review should also consider how the buyer will maintain the link after receiving. Your internal procedures may require retained certificates, receiving references, production-batch links or other records; identify those requirements early rather than assuming the supplier package matches every system. Request clarification on any source identifier that is difficult to reconcile with your purchasing record. Keep the original documents available for later quality questions and avoid changing a source lot number to fit a shorthand naming convention. The purpose is continuity of identity from the offered raw material through the buyer's own records, with clear responsibility for each step rather than a generic claim that every downstream use is already tracked.