Plate-and-Frame Filter | Specialized Equipment for Clarifying and Filtering Traditional Chinese Medicine Solutions
💡To address the challenges of turbidity, tendency to form precipitates, and short shelf life in traditional Chinese medicine solutions, the plate-and-frame filter employs purely physical precision retention to achieve high-precision clarification while preserving bioactivity and preventing loss of active ingredients. It is suitable for GMP clarification processes for oral solutions, syrups, decoctions, and tinctures.
I. Industry Challenges
The clarity of traditional Chinese medicine formulations directly affects the product’s appearance, taste, stability, and shelf life. Traditional methods such as natural sedimentation and standard filter cloth filtration are unable to thoroughly remove minute suspended impurities, colloidal particles, and macromolecular substances. This often leads to issues such as secondary precipitation, formulation turbidity, and a shortened shelf life, which affect product compliance and patient acceptance.
II. Solutions
Plate-and-Frame Filter — Precise Filtration, Clarity and Efficacy Guaranteed
Thanks to their highly efficient and controllable filtration performance, plate-and-frame filters have become a core piece of equipment in the clarification process for traditional Chinese medicine formulations. They are capable of effectively removing minute impurities without damaging the active ingredients, thereby achievingHigh Purity + High Activity Retention...with the dual objectives of fully meeting GMP standards for standardized production.
III. Core Strengths
✅ Effectively filters out fine impurities
It can be used in combination with multiple media, such as filter paper, filter membranes, and high-precision filter cloth, to accurately retain suspended particles, colloids, flocs, and microbial residues, thoroughly resolving the issue of turbidity in pharmaceutical solutions and ensuring that the final product is clear and free of impurities.
✅ Purely physical filtration that does not compromise the drug's efficacy
The entire process involves physical retention at room temperature, requiring no heating or chemical clarifying agents. It does not adsorb or degrade the active ingredients of traditional Chinese medicine, thereby maximizing the retention of the original formula’s therapeutic efficacy.
✅ Suitable for a wide range of operating conditions in traditional Chinese medicine formulations
Depending on the viscosity of the solution, impurity content, and clarification requirements, the number of plate-and-frame units can be flexibly increased or decreased, and filtration media of different precision levels can be switched, making it highly adaptable.
✅ Easy to disassemble, assemble, and clean; compliant with GMP standards
The structure is simple and compact, featuring a modular design that allows for easy disassembly and assembly. It ensures thorough cleaning with no hard-to-reach areas, enabling clean filtration and preventing cross-contamination between batches, and meets pharmaceutical validation standards.
IV. Comparison of Traditional Processes and Plate-and-Frame Filtration
| Dimensions of Comparison | Traditional Sedimentation/Standard Filter Cloth Filtration | Plate-and-Frame Precision Filter |
| Interception Accuracy | Filtration is coarse, allowing fine colloids and suspended solids to pass through very easily | Controllable precision, with precision clarification up to 0.45 μm |
| Clarification Effect | The finished product tends to become cloudy again and exhibits severe secondary sedimentation. | High clarity; remains stable during long-term storage without becoming cloudy |
| Retention of Active Ingredients | Prone to adsorption losses, which affect the active ingredient content | Pure physical filtration with high retention of active ingredients |
| Production Efficiency | Long dwell times, significant batch-to-batch variations, and low efficiency | Pressurized rapid filtration, consistent batch-to-batch quality and high production capacity |
| Operational Cleaning | Manual operation is cumbersome, and the fabric needs to be changed frequently. | Modular design for easy assembly and disassembly; quick and simple cleaning and maintenance |
| GMP Compliance | Without standardized processes, verification is difficult. | The process is controllable and traceable, and complies with GMP acceptance criteria. |
V. Typical Application Scenarios
✅ Clarifying Decoctions of Traditional Chinese Medicine
Removes fine herbal residue and suspended particles left after decoction, resulting in a clear and translucent decoction that enhances both the visual appeal and taste of the medicine.
✅ Filtration of Traditional Chinese Medicine Syrups
Effectively filters out colloidal particles and undissolved excipients, preventing flocculation and sedimentation/separation caused by prolonged storage of the syrup.
✅ Terminal Filtration of Traditional Chinese Medicine Oral Solutions
High-precision clarification prior to filling ensures that the finished product is crystal-clear and uniform, with stable shelf life throughout and no cloudiness.
✅ Refining of Traditional Chinese Medicine Liquors and Tinctures
Removes fine solid impurities from the alcohol maceration process, enhances the clarity of the wine, and improves the appearance of the finished product.
VI. Summary of the Proposal’s Value
Plate-and-frame filters are the key equipment for addressing issues such as turbidity, precipitation, and short shelf life in traditional Chinese medicine formulations. Based onPurely physical, high precision, low lossThis filtration method thoroughly addresses the industry pain points associated with traditional processes—namely, “incomplete filtration, susceptibility to cloudiness, and loss of medicinal efficacy.” It consistently improves the clarity of medicinal solutions and elevates product quality, helping companies successfully pass GMP inspections and produce highly stable, widely recognized standardized traditional Chinese medicine formulations.
🔗 Recommended Compatible Devices
Reference Guide for Selecting Production Line Equipment:
✅ Front-end extraction and concentration:Concentration equipment
✅ Mid-range liquid storage and blending:Blending Tank
✅ Precision Sterilization at the Back End:Separation and Purification Equipment