Disintegration Tester Operation and Calibration SOP

In short: This illustrative SOP template describes how a QC laboratory can operate, check and document a disintegration tester. Use the current applicable pharmacopoeial chapter, product monograph, approved method and the installed instrument manual to set the actual procedure and acceptance criteria. The legacy numerical settings below are examples from the source SOP and require site verification.

Objective

Provide a controlled template for routine operation, calibration checks, inspection and recordkeeping for a disintegration tester.

Scope

Adapt this example for the specific instrument model and test methods used by a QC laboratory. Before approval, identify the site, instrument ID, applicable compendium and product-specific procedures. This article is not a substitute for an approved method or the full current pharmacopoeial text.

USP–NF General Chapter <701>, Disintegration, describes a compendial disintegration test. The applicable monograph and approved method determine the test conditions and endpoint. A disintegration result does not establish that the dosage unit or its active ingredient has completely dissolved. The USP chapter was revised with an effective date of 1 October 2026; check the current official text before using a test configuration.

Responsibilities

Analyst: Confirm the instrument is suitable for use, follow the approved method and controlled SOP, and record the run and any abnormal condition at the time it occurs.
Section head or designee: Review completed records, ensure instrument checks are current, and arrange action when equipment is overdue or outside an approved criterion.
Quality unit: Control approval, training, implementation and revision of the site-specific procedure.

Procedure

This sequence is an example. Adapt it to the installed model and approved site procedures.

Pre-use checks

Confirm the instrument ID and calibration or qualification status. Do not use equipment that is overdue, damaged, under maintenance or labelled out of service.
Check that the vessel, baskets, screens and any discs required by the approved method are clean, intact and assembled as described in the instrument manual.
Confirm the selected medium, volume, temperature, test duration, number of units and acceptance criteria from the current applicable compendial text, product monograph and approved method.
Check the water bath and beakers for suitable condition. Connect and operate the instrument only as instructed by the manufacturer. The original site SOP says not to energise the instrument when the bath is empty and warns against forcing the basket assembly; confirm these precautions in the installed model’s manual.
Compare the instrument’s temperature indication with a suitable calibrated reference thermometer where required by the site procedure. Record the instrument ID, reference device ID and results.

Test operation

Prepare the test medium and bring it to the conditions specified in the approved method.
Fit the specified baskets, tubes and discs, if applicable. Select the method settings from the approved method rather than copying settings from another product.
Allow the instrument to reach the required operating condition. Place the specified units into the apparatus as directed by the method, start the run and observe the units at the required time points.
Apply the endpoint and acceptance criteria stated in the applicable monograph and approved method. Do not treat disintegration as proof of complete dissolution.
Record the method and medium, instrument and basket identification, test conditions, start and end times, observations, result, analyst and any interruptions or deviations.
After the run, remove residues, clean the parts according to the site cleaning procedure and return the instrument to its defined state.

Example in-house criterion (not a pharmacopoeial requirement): The source SOP uses two 1,000 mL beakers, approximately 700 mL of medium in each, and positions the basket mesh at least 15 mm below the liquid surface at the highest stroke. It also describes a particular external-probe placement. Confirm these details for the installed apparatus and current method before adoption.

Calibration and performance checks

Use the site’s approved calibration and qualification programme. Use traceable reference equipment where appropriate, document the method and results, and remove the tester from use if an approved acceptance criterion is not met. The following values are retained from the source SOP as local examples; they are not universal pharmacopoeial calibration instructions.

Example in-house criterion (not a pharmacopoeial requirement): The original SOP lists quarterly checks, six readings on each side for stroke rate and distance, a rate range of 29–32 cycles/min and a stroke range of 53–57 mm. It also lists timer checks at 5, 10, 15 and 20 minutes, plus a 60-minute heater check with readings every 5 minutes and a 36–38 °C range.

Check	Example method to be confirmed locally	Record
Stroke rate and distance	Measure each side using the approved calibration method and suitable reference device. Compare results only with the site’s approved limits.	Individual readings, reference device, acceptance decision and reviewer
Timer	Compare selected time points with a calibrated stopwatch or other approved reference.	Set point, measured time and difference
Temperature control	Compare displayed and medium temperatures using the approved probe placement and calibrated reference thermometer.	Bath and medium readings, set points, probe IDs and acceptance decision
Basket and screen condition	Inspect for damage or blockage using a defined lighting and inspection method.	Basket ID, observations and any replacement

Example in-house criterion (not a pharmacopoeial requirement): The source SOP specifies a 37 °C medium set point, a 38 °C bath set point, a “set + 2 °C” ready alarm, a 37 °C heater-check target and a 36–38 °C acceptance range.

Example in-house criterion (not a pharmacopoeial requirement): The source SOP describes a 230 V AC connection, 1,000 mL beakers, approximately 700 mL medium, and model-specific menu selections.

Example in-house criterion (not a pharmacopoeial requirement): The source SOP calls for visual checks of each screen opening and replacement if openings are damaged or the screen has cracks, abrasion or dents.

If any result is outside an approved criterion, stop use, identify the instrument as unavailable, notify the supervisor and follow the site’s deviation and equipment-impact-assessment procedures. Document any assessment of tests performed since the last acceptable check.

Records and retention

Maintain the instrument usage log, calibration and performance-check records, maintenance and cleaning history, reference-device details, training records and any associated investigation. Make entries at the time the activity occurs, identify the person performing and reviewing each activity, and preserve the original result when correcting a record.

Retain batch-associated control records for at least 1 year after the expiry date of the respective product batch. Where EU GMP applies, retain batch documentation for at least 5 years after Qualified Person certification if that is longer; follow longer periods required by local law, the marketing authorisation or the approved site schedule. See EudraLex Volume 4, Part I, Chapter 4, §4.11 and 21 CFR 211.180(a). For equipment logbooks or records not linked to a specific batch, follow the site’s approved retention schedule while preserving any linked batch-record retention requirement.

Training

Train analysts and reviewers on the approved site-specific SOP, the applicable product methods, safe instrument handling, documentation and action for an out-of-tolerance result. Document training before independent use.

Abbreviations

AC: Alternating current
QC: Quality control
RTD: Resistance temperature detector
SOP: Standard operating procedure

Frequently asked questions

Does a disintegration result mean that the tablet has dissolved?

No. Disintegration and dissolution are distinct observations. Use the specified dissolution test when dissolution is required.

Which time and acceptance limit should be used?

Use the applicable product monograph and approved method. This template does not set a universal time or product acceptance limit.

What should happen if a calibration check fails?

Take the tester out of service, document the result and follow the site’s deviation and equipment-impact-assessment process before returning it to use.

See also: Operation and cleaning of a tablet disintegration tester, Operation and calibration of a dissolution test apparatus, and Operation and calibration of another dissolution test apparatus.

References

United States Pharmacopeia, USP–NF General Chapter <701>, “Disintegration” (2025 public preview); the USP official revision notice states an effective date of 1 October 2026: chapter preview and official revision status.
European Directorate for the Quality of Medicines & HealthCare, Ph. Eur. general chapter 2.9.1, “Disintegration of tablets and capsules,” Pharmacopoeial Discussion Group Q-02, Revision 2; harmonisation status as of 1 May 2026: official status page.
European Commission, EudraLex Volume 4, Part I, Chapter 4, “Documentation,” Revision 1 (effective 30 June 2011), §4.11: official PDF.
United States, 21 CFR 211.180(a), “General requirements,” current eCFR: official regulation.

Revision history

The imported source did not include usable revision entries. Create a controlled revision history when adapting this template.