How do you calculate gamma dose cost per assembly?

Multiply assemblies by dose cost per unit by load density percent, add the fixed dosimetry and release fee, then divide by assemblies. In the example that is 450 x $6.80 x 70% + $2,400 = $4,542, or about $10.09 per unit.

What drives gamma irradiation cost for single-use assemblies?

The variable dose charge (assemblies, per-unit dose cost, and how densely the carrier is packed) plus fixed dosimetry and lot-release fees. In the example the variable part is $2,142 and the fixed adder is $2,400.

Why does load density matter for gamma cost?

Contract sterilizers charge by carrier position and dwell time. A denser, validated load spreads the dose charge over more units, lowering effective cost per assembly.

What is a typical gamma sterilization dose for single-use bioprocess parts?

Most single-use assemblies are validated to 25 to 40 kGy for a 10^-6 sterility assurance level, per ISO 11137. The dollar cost per unit depends on part mass and carrier fill.

Gamma vs X-ray irradiation for disposables?

Both deliver ionizing dose. X-ray offers better dose uniformity and no radioactive source, but gamma remains widely validated and often cheaper per unit today; use this tool with your gamma quote.

How can I reduce cost per irradiated assembly?

Increase validated load density, negotiate the per-unit dose rate, or amortize the fixed release fee over larger shipments. The fixed $2,400 adder dominates small lots.

Single-Use Bioprocess Assemblies calculator

Gamma Dose Cost Calculator

The Gamma Dose Cost calculator estimates the cost of gamma-irradiating a shipment of single-use bioprocess assemblies to a validated sterility-assurance dose, typically 25 to 40 kGy. Supply-chain and sourcing managers at single-use suppliers and CDMOs use it to price irradiation service, since contract sterilizers charge on a load-density and dose basis plus fixed dosimetry and release fees. Because irradiation is often the single largest sterilization line item for disposables, getting the load-density fill and per-unit dose cost right materially changes landed cost. This tool separates the variable dose charge from the fixed release adder so you can see where money actually goes.

What this calculator does

Estimates gamma sterilization cost for single-use bioprocess assemblies from lot size, per-assembly dose cost, and how fully the validated irradiator load is filled.
Used by single-use manufacturing planners to budget contract gamma irradiation for a sterilization lot of fluid-path assemblies.
It computes total gamma irradiation cost, the fixed dosimetry and release adder, the variable dose charge scaled by load density, and the resulting cost per assembly.

Formula used

Cost = assemblies x dose cost per assembly x load density % + dosimetry & release
Per unit = total cost / assemblies

Inputs explained

Assemblies irradiated per shipment:
Gamma dose cost per assembly:
Validated load density fill:
Dosimetry and lot release fee:

How to use the result

Use it when quoting or reconciling contract irradiation invoices, or when evaluating whether a fuller carrier tote lowers per-unit dose cost.
Load density here is treated as a multiplier on variable dose cost; it does not model dose-mapping non-uniformity (max/min dose ratio) that can force overdosing to meet the minimum SAL dose.

Current U.S. benchmarks

U.S. manufacturing runs at 75.6% of capacity with new factory orders at $657B per month (Federal Reserve and Census, May 2026).

Common questions

How do you calculate gamma dose cost per assembly? Multiply assemblies by dose cost per unit by load density percent, add the fixed dosimetry and release fee, then divide by assemblies. In the example that is 450 x $6.80 x 70% + $2,400 = $4,542, or about $10.09 per unit.
What drives gamma irradiation cost for single-use assemblies? The variable dose charge (assemblies, per-unit dose cost, and how densely the carrier is packed) plus fixed dosimetry and lot-release fees. In the example the variable part is $2,142 and the fixed adder is $2,400.
Why does load density matter for gamma cost? Contract sterilizers charge by carrier position and dwell time. A denser, validated load spreads the dose charge over more units, lowering effective cost per assembly.
What is a typical gamma sterilization dose for single-use bioprocess parts? Most single-use assemblies are validated to 25 to 40 kGy for a 10^-6 sterility assurance level, per ISO 11137. The dollar cost per unit depends on part mass and carrier fill.
Gamma vs X-ray irradiation for disposables? Both deliver ionizing dose. X-ray offers better dose uniformity and no radioactive source, but gamma remains widely validated and often cheaper per unit today; use this tool with your gamma quote.

Last reviewed 2026-05-12.