How to Find a Lot Number for Alconox Inc. Critical Cleaners

In order to control manufacturing processes for companies with raw material control requirements such as ISO certified organizations and cGMP compliant companies, you need to record a lot number for the detergent being used in cleaning. You also need to be able to find that lot number.

Alconox Inc. product’s lot number system has been updated. Thus, for future reference, any product with the below LOT formats has been manufactured at the Macedonia, OH manufacturing location.

LOT MM-DD-YY-##
MM – 2 digits for the month
DD – 2 digits for the day
YY – 2 digits for the year
## Batch number of the day
Example 01-17-23-03
Manufacture on January 17th, 2023,
Batch 03

LOT MMYYJJJ##
MM – 2 digits for the month
YY – 2 digits for the year
JJJ – Julian Date of Date Packaged
## Batch number of the day
Example 07231991
Manufacture on July 2023, Packed Date 18th,
Batch 1

To find the lot number of your Alconox Critical Cleaning Detergent brand, look on the package.

• 1 Qt (0.95L) and 1 Gal (3.8L) Bottle – upper bottle/shoulder area; inkjet
• 4 lb (1.8kg) jar – side of container; inkjet
• Case boxes – sticker by product label
• 5 gal (19L), 15 gal (57L) and 55 gal (208L) drums –  large lettering; inkjet
• 25 (11 kg) and 50 lb (22 kg) boxes – sticker by product label
• 100 lb (45 kg) lb and 300 lb (136 kg) drums – sticker by product label

Our previous lot system in the format of letter, number, letter, number such as L2H9 is deciphered as follows:

To estimate the expiration date from the lot number, use the 3^rd and 4^th character of the lot number.  The 3^rd character is a letter that stands for the month of manufacture using A for January thru M for December skipping the letter I to avoid confusion with the number 1.  The 4^th character of the lot number is a number which stands for the year of manufacture currently starting from the year 2010, such that 0=2010 and 9 = 2019.  Starting in the year 2020, 0 will mean 2020 and 9 will then mean 2029 and so on.  Knowing the month and year of manufacture, you now add 3.5 years and get the month of expiration.

Lot numbers can be used to get a certificate of analysis, which will give the expiration date, storage conditions and analysis for that lot. If you do not have the package available to you, it is possible to track the lot number if you know the detergent brand, the purchase order number placed with Alconox Inc. and name of the company that sold the Alconox Inc. detergent to you.

To request any Alconox Inc. detergents for free, please complete the questionnaire at Get Sample.  For more information about any one of our Alconox Inc. detergents, consult the technical bulletin for each product. Or click here to access each of our detergent’s  Safety Data Sheets.

Do you have a critical cleaning question for the experts at Alconox Inc.?  Search TechNotes to see if it’s been answered before or Ask Alconox.