Gelatin Bloom Strength Measurement
Bloom Tester
Reliable Measurement of Gelatin Bloom Strength
About Us
Bloom Tester
A Bloom Tester is a precision instrument used to measure the Bloom Strength of Gelatin, which indicates the firmness and quality of the gel. Whether it is Knox gelatin bloom strength, gelatin used in capsules, or the strength of gelatin sheets, accurate testing helps manufacturers maintain consistent quality across food, pharmaceutical, and industrial applications.
Understanding Bloom Strength of Gelatin
The bloom strength of gelatin is expressed in grams and represents the force required to depress a standard plunger into a prepared gel. It is one of the most important properties of gelatin, influencing:
- Food applications – such as confectionery, desserts, and protein products.
- Pharmaceuticals – especially in the production of gelatin capsules and coatings.
- Cosmetics and biotech – where gel texture and stability are essential.
Higher bloom values usually indicate stronger and firmer gels, while lower values provide a softer texture.
Three Precision-Driven Approaches
01
Fixed Deformation
Measures force required to compress a gel by a set
distance(e.g., 4mm for Bloom g Test).
02
Fixed Load
Records distance a gel deforms under a predefined
weight. Evaluates structural resilience under stress.
03
Peak Test
Measures maximum force before gel penetrate or
rupture (e.g., GSC Gel Strength in g·cm).
Standards for Bloom Strength Testing
To ensure reliable results, the measurement of bloom strength of gelatin must follow recognized methods.
- GMIA guidelines for gelatin testing.
- USP, EP, and JP standards for pharmaceutical gelatin.
- ISO/ASTM protocols for gel strength measurement.
Using the right procedure and equipment, such as a Bloom Viscosity Tester, guarantees results that meet both regulatory and industry requirements.
gelatine bloom tester
Bloom Strength Testing Matters
Accurate bloom gel strength measurement is vital because it provides a reliable indicator of gelatin’s quality, performance, and suitability for different applications.
Verifies raw material quality
Confirms that gelatin meets required specifications before production, avoiding low-quality batches.
Ensures capsule performance
Guarantees proper firmness, elasticity, and dissolution, complying with pharmacopeia standards.
Maintains consistency
Delivers stable texture and functionality in food, confectionery, and pharmaceutical products, building consumer trust.
Reduces waste and failures
Detects deviations early, preventing defective batches, cutting costs, and minimizing risks.
Our Strengths
Our Bloom Tester ensures accurate, repeatable results and meets international standards. With flexible applications from gelatin sheets to capsules, and reliable support including training and service, we help you maintain consistent quality.
- High Accuracy Equipment – Our Bloom Tester delivers consistent and repeatable results.
- Compliance – Fully aligned with GMIA, USP, EP, JP, and ISO standards.
- Flexible Applications – From gelatin sheet bloom strength testing to capsule-grade gelatin.
- Customer Support – Technical training, calibration, and after-sales service available.
What We Offer
We provide not only testing instruments but also technical expertise. Whether you need to measure the bloom strength of gelatin capsules, evaluate food-grade gelatin, or verify industrial gelatin properties, we can supply the equipment, training, and ongoing support to help you achieve accurate and reliable results.

Our Bloom Tester delivers precise, compliant, and versatile testing with full support for consistent quality.
– CELL INSTRUMENTS
Frequently Asked Questions
1. What is Bloom Strength of Gelatin?
Bloom Strength is a measure of the firmness of a gelatin gel, expressed in grams. It indicates the force needed to depress a plunger into the gel and directly relates to gel quality and texture.
2. Why is Bloom Strength testing important?
Testing ensures that gelatin meets the required gelatin bloom strength for its intended use, whether in food, pharmaceutical capsules, or industrial applications. It helps guarantee product consistency and compliance with standards.
3. Can Bloom Tester measure Knox gelatin bloom strength or gelatin sheets?
Yes. The Bloom Tester can measure different types of gelatin, including food-grade gelatin (such as Knox), gelatin sheet bloom strength, and pharmaceutical-grade gelatin.
4. What standards does the Bloom Tester comply with?
Our instruments are designed according to GMIA, USP, EP, JP, and ISO/ASTM standards for gel strength measurement.
5.What is the difference between bloom strength and viscosity testing?
Bloom Strength measures gel firmness, while a Bloom Viscosity Tester evaluates the flow properties of gelatin solutions. Both parameters are important for quality control.


Get in touch
No. 5577 Gongyebei Rd, Licheng, Jinan, 250109, Shandong, P.R.C.
marketing@celtec.cn
+86 185 6001 3985