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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
| Lot Number: |
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. |
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.
Product: Sodium Hydroxide SX0590-1
| 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. |
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. |
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. |
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. |
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.
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