Gel Strength & Bloom Tester

Gel Strength & Bloom Tester

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Gel Strength & Bloom Tester
  • Gel Strength & Bloom Tester
Gel Strength & Bloom Tester
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Gel Strength & Bloom Tester

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Gel Strength & Bloom Tester – QualiGST™-50 | Precision Gel Analysis System

The Gel Strength & Bloom Tester – QualiGST™-50 is a high-precision analytical instrument designed to determine gel strength and Bloom value in gelatin and other gel-based materials. It measures mechanical resistance, firmness, and structural stability by applying a controlled compressive force through a standardized probe.

Built for reliable quality control and product development workflows, the QualiGST™-50 delivers consistent and repeatable test results using advanced force measurement technology combined with precise displacement control. Its stable testing performance supports accurate evaluation of gel texture and behavior.

This system is widely used in food, pharmaceutical, cosmetic, and research laboratories where accurate gel characterization is essential for maintaining product quality, formulation consistency, and regulatory compliance.

Gel Strength & Bloom Tester – QualiGST™-50 | Application Areas

The QualiGST™-50 Gel Strength & Bloom Tester is widely utilized for texture evaluation and structural integrity analysis across multiple industries:

Food Industry
Used for measuring gel strength and Bloom value in gelatin, surimi, imitation seafood, desserts, and other gel-based food products. It helps maintain consistent texture, firmness, and overall sensory quality to support consumer satisfaction.

Pharmaceutical Industry
Applied in the assessment of hydrogels, softgel capsules, tablet coatings, and wound care dressings. It ensures reliable gel consistency that supports accurate performance, controlled release behavior, and dosage stability.

Cosmetics & Personal Care
Used for evaluating gel-based creams, serums, and cosmetic formulations. It helps maintain uniform texture, smooth application, and product stability throughout shelf life.

Gel Strength & Bloom Tester – QualiGST™-50 Key Features

Multi-Mode Gel Texture Testing
Supports fixed deformation testing, fixed load (weight-based) testing, peak force (rupture) analysis, and standardized Bloom g measurement on a single integrated platform.

Bloom Value Measurement
Performs Bloom strength testing using a 4 mm deformation with a Ø12.7 mm probe, delivering results in grams for accurate gel strength evaluation.

High-Precision Motion Control
PLC-based motor system with a precision ball-lead screw ensures stable motion control and displacement accuracy up to ±0.01 mm.

Wide Adjustable Test Parameters
Test speed adjustable from 1 to 100 mm/min with a configurable force range up to 50 N, supporting diverse testing requirements.

Flexible Probe & Fixture Options
Supports interchangeable probes including Ø5 mm, Ø10 mm, Ø12.7 mm, and custom designs to accommodate different gel types and industry standards.

User-Friendly Touchscreen Interface
7-inch HMI touchscreen offers guided navigation, real-time force–displacement curves, and straightforward parameter configuration.

Integrated Data Output
Built-in microprinter enables instant test report generation, while optional RS-232 connectivity allows data transfer to external systems.

Safety & Reliability Design
Includes travel-limit protection, overload protection, automatic return function, and guarded load cell system for safe operation and long service life.

Front View

Test Report

Theory of Gel Strength Testing
A Gel Strength Tester evaluates the mechanical resistance of a gel network when it is subjected to controlled compression or penetration. Gel strength reflects the internal structure, elasticity, and resistance to deformation of a material, which directly affects texture, stability, and functional performance in food, pharmaceutical, and cosmetic formulations.

In quantitative terms, gel strength describes the relationship between applied force and the resulting deformation. It is commonly expressed as force (g or N) or force × distance (g·cm). A stronger gel structure resists deformation for a longer period and requires higher force to reach rupture, while weaker gels deform or break under lower force levels.

Theory of Bloom Testing
A Bloom Tester evaluates gel firmness using a standardized penetration method, typically a 4 mm indentation with a 12.7 mm diameter cylindrical probe. The force required to achieve this fixed deformation is recorded as the Bloom value (Bloom g), which serves as a widely recognized reference for gelatin and hydrocolloid quality.

Bloom testing provides a consistent and comparable measurement for gel consistency, batch uniformity, and compliance with industry requirements. It is especially important in gelatin production, confectionery applications, and surimi-based products where texture precision is critical.

Test Methods in QualiGST™-50

The Gel Strength & Bloom Tester – QualiGST™-50 supports multiple standardized test modes to evaluate different material behaviors and mechanical responses:

Fixed Deformation Method
The probe compresses the gel to a defined distance at a controlled speed while measuring the required force.

Used for:

  • Gel hardness evaluation
  • Deformation resistance analysis
  • Bloom g measurement (4 mm indentation standard)

Fixed Load (Weight) Method
A constant force is applied to the sample, and the resulting deformation is measured over time.

Used for:

Structural stability assessment under sustained load
Evaluation of long-term gel behavior
Material consistency analysis

Peak (Rupture) Test Method
The probe continues penetration until gel failure occurs, capturing the maximum force at rupture.

Used for:

  • Puncture resistance measurement
  • Elastic limit determination
  • Structural integrity analysis of gels

Gel Strength (g·cm) Measurement
Gel strength is calculated using the relationship:

Gel Strength = Force (g) × Distance (cm)

Gel Strength=F×d

This calculation provides a combined evaluation of firmness and elasticity, offering a more complete mechanical profile than force alone.

Measurement Control and Accuracy
The QualiGST™-50 uses a PLC-controlled drive system combined with a precision ball-lead screw mechanism to maintain stable test motion and high positional accuracy up to ±0.01 mm. Controlled probe movement, repeatable loading conditions, and automatic return functionality help maintain consistent results across repeated testing cycles and different operators.

Gel Strength & Bloom Tester – QualiGST™-50 Technical Specifications

Parameter Specification
Model QualiGST™-50
Test Items
  • WEIGHT: To measure distance at a certain load
  • PEAK: To measure gel strength
  • DISTANCE: To measure load at a certain distance
  • BLOOM STRENGTH: To measure the weight in grams required to depress the surface of a gel by 4 mm
Test Force Range 0 – 50 N (customizable)
Stroke 110 mm (without probe)
Test Speed 1 – 100 mm/min (adjustable)
Displacement Accuracy ±0.01 mm
Display 7 inches HMI touchscreen
Control System PLC control with HMI touchscreen
Testing Modes Fixed deformation, Bloom test, fixed load, peak force
Bloom Test Method 4 mm deformation with Ø12.7 mm probe
Gel Strength Calculation Force (g) × Distance (cm) = g·cm
Probes Ø5 mm, Ø10 mm, Ø12.7 mm, custom
Data Output Embedded microprinter; optional RS-232
Packaging Dimension 510 x 360 x 500 mm
Voltage AC 110–220 V, 50/60 Hz
Safety Features Limit switches, overload protection, auto-return

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks. If you require these items urgently please contact us to check accurate stock availability and to organize faster shipping methods.

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Important Delivery Information

Delivery time varies upon stock availability. Our standard dispatch and shipping times are generally within 1 week, however for some high demand items the delivery may be extended to 2-3 weeks.

Need it urgently? Contact us here to check stock and organize faster shipping.

Orders:
Purchaser acknowledges that when placing an order on the Qualitest:

A. the placing of the order signifies the purchaser's assent to place said order at the Qualitest and that the order will be accepted by the successful processing of the order by Qualitest USA LC.
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C. the purchaser has the full authority to enter into the contract for such entity, and such grant of authority was indicated by purchaser by placement of the order through the Qualitest.
D. A minimum handling fee will be applied to the shipping total for all orders.

Shipping within the U.S.A.:

All orders will be shipped best way prepaid, via courier for smaller packages or via Freight forwarders for larger crates. A handling fee may be applicable to orders. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims.

Shipping outside of the U.S.A.:

All orders will be shipped best way, via courier for smaller packages or via Freight forwarders for larger crates. A low handling fee may be applicable. Title to merchandise transfers to the purchaser upon delivery to the carrier. Loss or damage in transit is the responsibility of the purchaser. Qualitest USA will provide assistance with information needed for processing claims. Export fees, duties, taxes, and customs clearance are the responsibility of the purchaser.

Shipping insurance is not included, please contact our sales representatives if you need shipping insurance.

Partial shipment: Qualitest USA reserves the right to make partial shipments unless otherwise instructed by the purchaser.

Payment terms: All payments to Qualitest USA are to be made in U.S. Dollars (USD)

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their bank information
3 credit references from other suppliers
Please allow 5 business days for confirmation of credit and creation of an open account.

Return Policy:

Qualitest USA may accept return of purchased merchandise within North America for refund or credit under the following conditions -

  • There may be an additional restocking fee charged to the transaction if items are already shipped to customer.
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  • Purchaser has confirmed return authorization directly with Qualitest.
  • Merchandise is regular catalog item. Special order items can not be returned.
  • All returned merchandise is subject to inspection by Qualitest. Qualitest reserves the right to refuse return of any merchandise that is used, damaged, or not part of the current published price list. In the case Qualitest does not accept the returned merchandise, reasonable attempts will be made to notify the Buyer and the merchandise will be returned to Buyer as they were received by Qualitest. Damaged merchandise that can be restored to original condition and thus accepted for return will be evaluated on an individual basis. The purchaser will be advised of additional expenses for the repair and restoration of the returned item. After approval, these expenses will be charged to the purchaser in addition to the restocking fee.


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Complete Agreement:

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Information:

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The WorldofTest.com Qualitest contains trademarked product names. Product names are not to be reproduced or used in any fashion by any party other than Qualitest without the express written consent of Qualitest International Inc.. All pictures, descriptions, and other content of this web site are copyrighted by Qualitest USA and may not be used without the express written permission of Qualitest USA. Purchaser acknowledges that they have no right, title, or interest in the trademarks or copyrights in the products, and purchaser covenants that it will take no action to register or otherwise interfere with such rights. Please contact us with any requests for permission or questions about our trademarks. 

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No warranty or affirmation of fact, express or implied, other than expressly set forth herein is made or authorized by Qualitest USA. Qualitest USA disclaims any and all liability for product defect claims. Qualitest USA does not express or imply a warranty that any product on the web site(s) is fit for a particular purpose. Qualitest USA honors the product warranty as published and made available by Qualitest USA. Warranty claims for products not manufactured by Qualitest are the responsibility of the manufacturer. Qualitest USA will always make its best good faith effort to resolve warranty claims. 


Force Majeure:

Qualitest USA shall not be liable for any delay in or impairment of performance resulting in whole or in part from Acts of God, service interruptions, labor disruptions, insurrections, governmental decrees or controls, war risks, severe weather, supplies or raw materials, inability to procure or ship products, inability to obtain permits and/or licenses, or any other circumstances or causes beyond the control of Qualitest USA in the conduct of its business. 

Qualitest USA Privacy Policy 

I. What legal provisions govern our data processing practices? How and from where (internal/external sources) is personal data acquired? What are the rights of the user (web site visitor/registered customer)? 

1. General
As a general principle, no personal details need to be provided when visiting our Internet site. Data made available to us by you is treated in strict confidence and in accordance with the provisions of the Federal Data Protection Act. With a few exceptions (see point 2 below), our web server only registers non-personal (anonymous) data concerning the use of our site. Specifically, the log files of our web server, as a general rule, only contain the user's IP address, the last page visited by the user, the browser used, date, time and the file requested. This anonymous data, however, does not permit conclusions to be drawn about the individual users, and merely serves to prepare statistics on the use of our Internet site for the purpose of its improvement. At the same time, great importance is placed on ensuring that usage data is not linked with personal data. 

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3. Technical measures

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IV. Which department answers questions about the processing of personal data? 

5. Contact

In the light of the rapid technical developments in connection with the Internet, we make every effort to constantly improve our Internet site and technical precautions, including those connected with data protection. We will keep you suitably informed about such measures. Any changes will be published here. Further information is available at any time by contacting Qualitest USA.

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