Product & Sampling Parameters

Enter information for the previous product (residue source) and the next product to be manufactured on the cleaned equipment.

Product A — Previous Product (Residue Source)

Dirty
Toxicological Data (for NOAEL / HBEL methods)
Permitted Daily Exposure in micrograms/day
Health-Based Exposure Limit in micrograms/day

Product B — Next Product (Receiver)

Clean
Optional — used for reference only

Sampling & Recovery Parameters

Defaults
Standard adult: 70 kg | Pediatric: 50 kg

Equipment / Shared Surface Area

Enter the total shared product-contact surface area of the manufacturing train, or add individual equipment pieces.

#
Equipment Name
Surface Area (cm²)
Total Shared Surface Area 0 cm²

Calculation Methods

Select which limit calculation methods to apply. Adjust safety factors and parameters as needed for your specific application.

1/1000th Therapeutic Dose

The traditional approach: no more than 1/1000th of the minimum therapeutic dose of Product A should appear in the maximum daily dose of Product B.

MAC = (TD × SF × BatchB) / MDDB
10 ppm Criterion

Residue of Product A must not exceed a defined concentration (default 10 mg/kg) in the next batch of Product B.

MAC = Climit × BatchB
NOAEL-Based

Uses the No Observed Adverse Effect Level with uncertainty factors to derive a toxicologically justified limit.

MAC = (NOAEL × BW × BatchB) / (MDDB × UF)
F1×F2×F3×F4×F5
HBEL / PDE-Based

Uses the Health-Based Exposure Limit or Permitted Daily Exposure to set a toxicologically justified cleaning limit per EMA guidelines.

MAC = (PDE × BatchB) / MDDB
Visually Clean

A general limit based on visible residue detection. Typically 4 µg/cm² on stainless steel surfaces (316L SS).

Limit = VL × Swab Area

Results & Acceptance Limits

Cleaning validation limits calculated from your input parameters. The controlling limit (most conservative) is highlighted.

Enter product data and click "Calculate Limits" to generate results.