Multivitamin Softgel Bloom Strength Test

The multivitamin softgel bloom strength test is a critical quality control procedure used to evaluate the firmness and gelling capability of gelatin. In this test, a standard plunger is used to measure the force (in grams) required to depress the surface of a gelatin gel under specific temperature and time conditions. The bloom strength value directly affects the mechanical properties, shelf life, and integrity of softgel capsules.

For multivitamin softgels, ensuring consistent gelatin quality through bloom strength testing is essential to avoid deformation, leakage, or breakage during packaging, shipping, and consumption.

Bloom Strength Testing in Multivitamin Softgel Manufacturing

In the softgel industry, gelatin bloom strength typically ranges between 150–250 g. Gelatin with low bloom values results in softer capsules, while higher values yield firmer, more resilient shells. Maintaining the optimal bloom strength ensures dosage consistency, prevents oxidation of active ingredients, and supports consumer safety.

To conduct a bloom strength test on gelatin used in multivitamin softgels, a precise and stable testing environment is required:

Gelatin sample preparation involves dissolving gelatin powder in water and allowing it to set under controlled conditions (usually at 10°C for 16–18 hours).
ა gel strength tester then measures the bloom value using a 0.5-inch diameter plunger descending at a fixed speed.
Standard methods such as ISO 9665 or USP Gelatin Monographs are often referenced.

Why Bloom Strength Testing Matters for Softgel Quality Control

The gel strength of multivitamin softgels determines capsule shape retention, drug release behavior, and consumer satisfaction. Inadequate testing can result in:

Capsule deformation under environmental stress
Poor encapsulation performance
Reduced shelf life due to moisture permeability

By applying bloom strength testing, manufacturers ensure uniformity in capsule texture and resilience—key for pharmaceuticals and nutraceuticals alike.

Softgeltest.com’s Gel Strength Tester Solution

Softgeltest.com offers advanced gelatin testing solutions, including the GST-01 Gel Strength Tester, designed to deliver accurate, repeatable, and compliant bloom strength test results. Features of the GST-01 include:

Programmable test parameters
Stable temperature control for gelatin setting
High-precision force measurement
Compliance with USP, ISO, and GB standards

This instrument supports R&D, quality control, and batch verification for multivitamin softgel producers, ensuring regulatory compliance and product excellence.

Multivitamin Softgel Bloom Strength Test

Bloom Strength Testing in Multivitamin Softgel Manufacturing

Why Bloom Strength Testing Matters for Softgel Quality Control

Softgeltest.com’s Gel Strength Tester Solution

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