Dissolution Tester

Dissolution testers are indispensable analytical instruments in pharmaceutical laboratories, used to evaluate the rate and extent to which solid dosage forms—such as tablets or capsules—release their active pharmaceutical ingredients into a liquid medium. These systems are meticulously designed to simulate the human digestive environment, thereby providing critical data support for pharmaceutical formulation development, quality control, and regulatory compliance.

Dissolution Tester

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Benefits

Strict Regulatory Compliance

These instruments fully comply with international pharmacopoeia standards, providing the standardized experimental environment required for reproducible dissolution profiles.

Precise Temperature and Rotation Speed Control

The system is equipped with high-sensitivity thermal sensors and a microcomputer-controlled speed regulator, thereby minimizing experimental variables and ensuring data integrity.

Vibration-Free Mechanical Design

Mechanical vibrations—which could artificially accelerate dissolution rates—are suppressed to the greatest extent possible, ensuring that test results accurately reflect the true characteristics of the drug.

Strict Regulatory Compliance

These instruments fully comply with international pharmacopoeia standards, providing the standardized experimental environment required for reproducible dissolution profiles.

Precise Temperature and Rotation Speed Control

The system is equipped with high-sensitivity thermal sensors and a microcomputer-controlled speed regulator, thereby minimizing experimental variables and ensuring data integrity.

Vibration-Free Mechanical Design

Application

Immediate-Release Tablets

Used to verify whether standard tablets disintegrate rapidly and release their active pharmaceutical ingredients within a specified timeframe, thereby ensuring rapid absorption by the patient.

Sustained- and Controlled-Release Capsules

Designed for complex formulations that release medication gradually over a period of 12 to 24 hours; this tester provides long-term stability assurance and precise media replacement capabilities for the determination of long-duration dissolution profiles.

Enteric-Coated Preparations

Suitable for testing medications that must withstand the corrosive effects of gastric acid, simulating the physiological transition of the drug as it passes from the stomach into the intestine.

Soft and Hard Gelatin Capsules

This tester employs specialized "sinkers" to ensure that the capsules remain fully submerged within the dissolution medium at all times, thereby enabling the precise determination of the drug release process.

Transdermal Patches and Ointments

By utilizing specialized immersion cells or rotating cylinder assemblies, this instrument offers flexible adaptability for testing the drug release rates of transdermal patches and semi-solid formulations.

FAQ

Which dissolution methods do these machines support?

The systems typically support USP Apparatus 1 (Basket) and Apparatus 2 (Paddle) as standard. Depending on the accessories, they can also be configured for “Paddle over Disc” or “Rotating Cylinder” methods.

How does the machine maintain temperature uniformity?

It utilizes a circulating water bath or a dry-heating system with high-precision PID controllers to ensure that all vessels are maintained at a constant, uniform temperature (±0.5°C) throughout the test.

Are the vessels and paddles resistant to corrosive media?

Yes. All parts in contact with the dissolution medium, including the vessels, paddles, and baskets, are made from borosilicate glass or 316L stainless steel with optional Teflon coatings to ensure chemical resistance.

Does the system support automated data logging?

Absolutely. Most modern dissolution testers include integrated software for storing test parameters, results, and audit trails, ensuring full compliance with 21 CFR Part 11 digital record requirements.

How many vessels can be tested simultaneously?

Standard configurations usually offer 6, 8, or 14 vessels, allowing for simultaneous testing of multiple samples along with a “blank” or standard reference to increase laboratory throughput.