About Gelatin Capsules and the Importance of Hardness Testing

 

What is a Gelatin Capsule?

Gelatin capsules, often called gel caps or softgel capsules, are composed of gelatin derived from animal skin and bone collagen. An alternative is vegetable capsules, made from cellulose, primarily hydroxypropyl methyl cellulose (HPMC). Despite this alternative, gelatin capsules are more commonly used due to their lower production costs.

Olika typer av gelatinkapslar

Hard shell capsules: Contain dry, powdered ingredients or pellets, assembled from two halves—a smaller “body” and a larger “cap”.

Soft shell capsules: Contain oils or active ingredients suspended or dissolved in oil.

Finished Product Quality Control Tests for Capsules

Capsules undergo several tests aligned with compendial standards and regulatory requirements. These ensure product integrity, safety, and suitability for market release.

Physical Integrity of Gelatin Capsules

Leaking or damaged gelatin capsules erode consumer confidence. To prevent defective capsules from reaching consumers, manufacturers use a Hårdhetstest för gelatinkapslar to apply compressive force and verify structural strength across handling and usage conditions.

What Should the Hardness Be for a Gelatin Capsule?

Generally, a suitable formulation includes a dry plasticizer-to-gelatin ratio of 0.4–0.6:1.0 and a water-to-gelatin ratio of 1:1. Capsules reach their hardest state at 0.3:1.0 plasticizer-to-gelatin, and become softer at 1.8:1.

What is a Gelatin Capsule Hardness Tester?

A hardness tester measures capsule shell strength using a flat-shaped steel indenter. Bareiss developed a specialized solution called Gelomat, a plug-and-play, non-destructive testing instrument.

Application of Gelomat and Its Importance

Den Gelomat is used for testing hardness on gelatin capsules, paintballs, agars, and more. It provides high precision and repeatable results. It supports heads from 0–2 N and 0–20 N, and accessories such as Rotofix (automatic positioning) and Centrofix (manual fixture).

The accompanying software enables users to analyze results, create histograms, save data, and generate batch folders.

Integration with an Automated Optical Inspection System

Bareiss also offers customized automated optical inspection systems for capsule defect analysis. These systems integrate with Gelomat or function independently, ensuring near-perfect quality control while optimizing operational costs.

The Vital Role of Gelatin Capsule Hardness in Pharmaceutical Manufacturing

Den hardness of gelatin capsules is essential for maintaining pharmaceutical quality and compliance. Tools like the CHT-01 Gelatin Capsule Hardness Tester by Cell Instruments ensure that capsules meet standards of efficacy, safety, and regulatory compliance.

Gelatin Capsules in Drug Delivery: Hard Capsules vs. Softgels

Both capsule types require consistent hardness to maintain drug delivery accuracy and product reliability during manufacturing and usage.

The Process of Assessing Capsule Hardness

Hardness testers like the CHT-01 evaluate the capsule’s resistance to deformation via compression or penetration testing, confirming shell durability.

Capsule Hardness Testing: Beyond Quality Assurance

Upholding Product Integrity

Hardness testing safeguards capsule consistency and prevents issues that may impact drug stability and user safety.

Ensuring Dosage Accuracy

Uniform capsule hardness ensures precise medication dosage. Irregular hardness can lead to release inconsistencies and reduce treatment efficacy.

Improving Patient Compliance

Capsules with optimal hardness are easier to swallow and improve the user experience, encouraging better adherence to treatment.

Regulatorisk efterlevnad

Regulatory bodies like the FDA and EMA require manufacturers to conduct and document hardness testing as part of GMP protocols.

Enhancing Manufacturing Efficiency

Monitoring hardness allows early detection of production flaws, improving efficiency and reducing waste.

A Leap Forward in Capsule Hardness Technology

With its modern sensors and user interface, the CHT-01 Gelatin Capsule Hardness Tester offers advanced quality control capabilities.

Compression and Penetration Testing with the CHT-01

The CHT-01 performs dual-method testing—compression and penetration—to precisely measure capsule strength under various conditions.

Smart Data Integration with the CHT-01 Interface

Its intuitive software supports detailed reporting, batch tracking, and integration with broader quality systems.

Slutsats

In summary, gelatin capsule hardness testing is vital for pharmaceutical quality and safety. The Cell Instruments CHT-01 provides the precision, compliance, and data intelligence required to meet modern production and regulatory demands. It is a crucial tool for quality control in pharmaceutical manufacturing.

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