News - Customer Case Study: Improving Gelatin Clarity with SCP-336 Filter Sheets

Customer Background

As market demand for high-quality gelatin continues to rise, achieving superior clarity has become essential for manufacturers targeting premium applications. An Indian customer sought to enhance the clarity of their gelatin solution to meet the stringent requirements of high-end products such as transparent gummies and pharmaceutical capsule shells.

To address this challenge, the customer partnered with Great Wall Filtration to identify an effective and scalable filtration solution through laboratory testing.

Challenges & Requirements

During gelatin production, fine suspended particles, fibers, and colloidal impurities significantly affect the final product’s transparency and purity. The customer’s raw gelatin solution exhibited a relatively high turbidity of approximately 46.83 NTU, and their existing filtration process was unable to achieve the desired clarity.

The customer required a solution that could:

● Significantly reduce turbidity and improve clarity
● Maintain stable filtration efficiency and throughput
● Ensure no harmful residues are introduced, allowing for subsequent active substance testing

Solution

To meet these requirements, Great Wall Filtration’s technical team conducted filtration trials using:

● A vertical filter unit (filtration area: 0.0082 m²)
● SCP-336 filter sheets (retention rating: 0.2–0.4 μm)

This combination was selected to effectively remove fine particulates while maintaining high flow performance.

Experimental Procedure

Equipment Preparation The filtration system was cleaned using 5% NaOH and 5% HCl, followed by rinsing with purified water until the pH reached 7–7.5.
Filter Sheet Preparation SCP-336 filter sheets were pre-flushed with purified water at 50 L/m² to remove surface fibers and dust.
Sample Preparation A 5% gelatin solution was prepared (5 g gelatin + 95 ml water), heated to 65°C, stirred, and filtered at approximately 50°C.
Filtration & Testing
● Filtrate was collected in 100 ml fractions (total 500 ml)
● Filtration time, pressure, and flow rate were recorded
● Turbidity before and after filtration was measured

Key Parameters

● Filtration Pressure: 0.029–0.048 MPa
● Filtration Flux: 36.78–95.33 L/m²·min
● Operating Temperature: Ambient

Results

Significant Clarity Improvement: Turbidity decreased from 46.83 NTU to 30.8 NTU, representing an average improvement of 34.78%
High Throughput Performance: Over 2 liters of gelatin solution were successfully filtered using a 0.0082 m² area, demonstrating excellent capacity
Stable Filtration Performance: Consistent turbidity reduction was observed across all fractions, with minimal fluctuation in pressure and flow rate
High-Quality Filtrate: The filtrate appeared clear and free of visible particles, meeting requirements for downstream testing

Customer Value

Product Quality Upgrade The improved clarity enables the production of high-end gelatin products with strict transparency requirements.
Efficient and Stable Operation SCP-336 filter sheets demonstrated strong anti-clogging performance and consistent filtration results.
Easy Implementation The solution is fully compatible with the customer’s existing filtration equipment, requiring no system modifications.
Data-Driven Optimization Comprehensive data on turbidity, flow rate, and pressure supports process standardization and scale-up.

Customer Feedback

“The SCP-336 filter sheets exceeded our expectations. Turbidity was consistently reduced from 46.83 NTU to 30.8 NTU, achieving a 34.78% improvement. We plan to adopt this solution as a standard step in our gelatin fine filtration process. We appreciate the professional support from the technical team.”

Conclusion

This case study demonstrates that SCP-336 filter sheets effectively remove fine suspended impurities from gelatin solutions, significantly improving clarity while maintaining high filtration efficiency and consistency.

For manufacturers aiming to produce premium-grade gelatin with superior transparency, SCP-336 offers a reliable, cost-effective, and scalable filtration solution.

Post time: Apr-13-2026