EMD Chemicals Lot Numbering System
The lot numbering system meets all required guidelines for traceability. The lot number and catalog number together provide the uniqueness and traceability that is required by our industry.
A 5 digit lot number is assigned to products manufactured and filled as complete lots such as OmniSolv® high purity solvents.
Product: Acetone AX0116-6
| A 5 digit lot number is assigned to products manufactured and filled as complete lots such as OmniSolv® high purity solvents. | 4 | 0 | 1 | 2 | 3 |
| The first two digits are the year that the product was approved. Note: The actual year is not used. The lot year is offset by 60. |
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| Example: Lot year 40 is 2000. (Lot year 42 is 2002, etc.) The next three digits are the Julian day. This day represents the day the material was received. | |||||
An 8 digit lot number is assigned to products filled from bulk where the same lot of material may be used for other fills. The additional three digits indicate that there are subsequent fills from the same bulk material.
| Lot Number: | 4 | 0 | 1 | 2 | 3 | 0 | 1 | 8 |
| The first five digits mean the same as above. The last three digits are the year and week of the fill. |
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| Example: Year 0 (4 0 1 2 3 0 1 8) means year 2000. Week 18 (4 0 1 2 3 0 1 8) means the eighteenth week of the year. |
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| Example: 4 0 1 2 3 1 0 2 indicates that this product was filled in the second week of 2001 from the same bulk material. |
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| Example: 4 0 1 2 3 2 1 0 indicates that this product was filled in the tenth week of 2002 from the same bulk material. |
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Please Note:
These lot numbering systems apply only to products manufactured in our Norwood, OH, facility. Products produced in our Gibbstown, NJ, facility use a four digit system, i.e., the last digit of the year plus the Julian day for the finished goods (e.g., Lot Number 1155 would be the 155th day of 2001). Products we sell as an affiliate of Merck KGaA, Darmstadt, Germany, generally retain their original lot numbers.
