How do you calculate how much adhesive you can use within pot life?

Multiply your mixed-adhesive use rate by the usable pot-life window. At 680 g/hr for 0.75 hr you can dispense 510 g before the batch gels.

What is pot life in a two-part adhesive?

Pot life is the time after mixing the resin and hardener during which the adhesive stays fluid enough to apply. After it the material gels and must be discarded, so batch size should match what you can dispense in that time.

How much does a usable batch cost?

Multiply the usable amount by the unit cost. Here 510 g at $0.055/g is $28.05 of adhesive that actually gets applied before gel.

Why does pot life shrink for larger batches?

The cure is exothermic, so a bigger mixed mass holds its own heat and self-accelerates. A liter pot can gel far faster than the small lab sample the datasheet pot life was measured on.

How do I avoid wasting mixed adhesive?

Size each mix so use rate times pot life covers it with little left over, mix smaller batches more often, keep the work area cool, and use shallow containers that shed exotherm heat.

Pot life vs open time - what's the difference?

Pot life is the workable time in the mixing container; open time is how long the applied film stays bondable on the part. Both clocks run, and the tighter one governs your process.

Adhesives, Sealants & Industrial Bonding calculator

Pot Life Usage Calculator

Pot life is the working time after a two-part adhesive is mixed before it gels and becomes unusable. This calculator tells you how much of a mixed batch you can actually dispense within that window at your current use rate, and what that usable portion costs. Bonding supervisors and cost estimators rely on it to size mix batches so they are consumed before gel rather than thrown away half-cured in the pot. Mixing too much wastes expensive resin and triggers an exotherm; mixing too little starves the line. Getting the batch size matched to pot life and use rate is where the money is saved.

What this calculator does

Estimate mixed adhesive consumed during pot life from use rate, working time, and mixed material cost.
a bonding technician needs to choose a mixed batch size that can be used before pot life expires
It computes the mass or volume of mixed adhesive you can use before gel, found from use rate times pot life, and the cost of that usable amount.

Formula used

Mixed adhesive used before gel = mixed adhesive use rate × usable pot-life window
Usable mixed adhesive cost = mixed adhesive used before gel × mixed adhesive unit cost

Inputs explained

Mixed adhesive dispense rate:
Usable pot-life window:
Mixed adhesive cost per unit:

How to use the result

Use it to size two-part mix batches, estimate per-batch adhesive cost, and check whether your dispense rate consumes a batch before it gels.
Pot life shortens sharply with larger mix mass and higher temperature because of exothermic self-heating, so the usable window for a big pot can be well under the datasheet's small-sample figure.

Current U.S. benchmarks

The producer price index for industrial chemicals stands at 344.336 (BLS, May 2026), up 16.1% 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

How do you calculate how much adhesive you can use within pot life? Multiply your mixed-adhesive use rate by the usable pot-life window. At 680 g/hr for 0.75 hr you can dispense 510 g before the batch gels.
What is pot life in a two-part adhesive? Pot life is the time after mixing the resin and hardener during which the adhesive stays fluid enough to apply. After it the material gels and must be discarded, so batch size should match what you can dispense in that time.
How much does a usable batch cost? Multiply the usable amount by the unit cost. Here 510 g at $0.055/g is $28.05 of adhesive that actually gets applied before gel.
Why does pot life shrink for larger batches? The cure is exothermic, so a bigger mixed mass holds its own heat and self-accelerates. A liter pot can gel far faster than the small lab sample the datasheet pot life was measured on.
How do I avoid wasting mixed adhesive? Size each mix so use rate times pot life covers it with little left over, mix smaller batches more often, keep the work area cool, and use shallow containers that shed exotherm heat.

Last reviewed 2026-05-12.