Where do I find the expiry date?

Use the lot label, certificate, or supplier instructions. Storage temperature and unopened packaging can be conditions of the stated shelf life.

Can I combine lots with different expiry dates?

Run each lot separately using its applicable expiry and planned consumption. Prioritize earlier expiries when assigning demand; the same demand cannot consume two lots simultaneously.

What unit should I enter?

Use one consistent unit for stock and daily consumption. Kilograms permit fractions; cartridges can also be expressed as equivalent full cartridges when partial contents are usable.

Can I still use the inventory remaining at expiry?

Only your supplier and approved quality procedure can determine disposition. The calculated quantity is inventory exposure, not permission to extend its usable life.

Adhesives, Sealants & Industrial Bonding calculator

Adhesive Inventory Shelf Life Calculator

Check whether a specific adhesive lot will be consumed before it expires. Enter its inventory, calendar-day usage, and days remaining before the applicable expiry.

What this calculator does

Find how long a lot can supply production before expiry and how much stock may expire unused.

Formula used

Inventory coverage = inventory ÷ daily usage
Usable days = MIN(inventory coverage, days until expiry)
Inventory at expiry = MAX(inventory − daily usage × days until expiry, 0)
Inventory used = inventory − inventory at expiry

Inputs explained

Usable Lot Inventory: From stock records for one lot in your chosen unit.
Average Daily Usage: Average calendar-day consumption, including days without production.
Days Until Lot Expiry: Calendar days remaining before the applicable lot expiry.

How to use the result

Best suited to aging lot review, purchase quantity planning.
Does not determine chemical shelf life or authorize using expired material. Separate lots require separate runs; opened containers may have a shorter applicable life.

Current U.S. benchmarks

The producer price index for industrial chemicals stands at 336.006 (BLS, Aug 2026), up 13.3% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The U.S. has 11,391 plastics and rubber products establishments employing about 815,988 workers (Census County Business Patterns, 2023).

Common questions

Where do I find the expiry date? Use the lot label, certificate, or supplier instructions. Storage temperature and unopened packaging can be conditions of the stated shelf life.
Can I combine lots with different expiry dates? Run each lot separately using its applicable expiry and planned consumption. Prioritize earlier expiries when assigning demand; the same demand cannot consume two lots simultaneously.
What unit should I enter? Use one consistent unit for stock and daily consumption. Kilograms permit fractions; cartridges can also be expressed as equivalent full cartridges when partial contents are usable.
Can I still use the inventory remaining at expiry? Only your supplier and approved quality procedure can determine disposition. The calculated quantity is inventory exposure, not permission to extend its usable life.

Last reviewed 2026-10-01.