The depth-stack filter cartridge is a high-performance deep-bed filtration solution engineered for critical liquid purification applications. Unlike conventional surface filters that capture contaminants only on the outer layer, this innovative cartridge utilizes a gradient pore structure that traps particles throughout the entire filter matrix, significantly increasing dirt-holding capacity and extending operational life.
Constructed from multiple layers of depth filter sheets stacked together in a modular assembly, the cartridge features a double separator design that enhances overall stability by fully supporting the sheet material. This design prevents filter sheet deformities after heat treatment and mitigates adverse effects from hot sanitation.
| Type | Filtration Rate | Process Type | Connection | Diameter | Layer Num | Sealing Ring |
| Single layer | 0.04~0.2μm | PC positive charge | DOE | 12 “ | 2 | Silicone rubber |
| 0.02~0.4μm | PE negative charge | TCT | 16 “ | 3 | EPDM | |
| 0.4~0.6μm | 4 | Fluororubber | ||||
| 0.6~0.8μm | 5 | Soft PTFE | ||||
| 0.8~1.5μm | 8 | |||||
| 1.5~3.0μm | 9 | |||||
| 3.0~6.0μm | 10 | |||||
| 4.0~9.0μm | 11 | |||||
| 5.0~12.0μm | 12 | |||||
| 6.0~15.0μm | 14 | |||||
| 7.0~18.0μm | 15 | |||||
| 8.0~20.0μm | 16 | |||||
| 9.0~30.0μm | ||||||
| 0.02~0.2μm | ||||||
| 0.04~0.2μm |
| Type | Filtration Rate | Process Type | Connection | Diameter | Layer Num | Sealing Ring |
| Double layer | 6~30μm | PC positive charge | DOE | 12 “ | 1 | Silicone rubber |
| 4~30μm | PE negative charge | TCT | 16 “ | 2 | EPDM | |
| 4~18μm | 3 | Fluororubber | ||||
| 0.1~18μm(positive charge) | 4 | Soft PTFE | ||||
| 0.1~0.9μm(positive charge) | 5 | |||||
| 0.04~9μm | 8 | |||||
| 0.04~0.8μm | 9 | |||||
| 0.04~0.4μm | 10 | |||||
| 0.02~0.2μm(positive charge) | ||||||
| 0.01~0.2μm(positive charge) | ||||||
| 0.01~0.1μm(positive charge) | ||||||
| 0.01~0.1μm(positive charge) |
These are the standard specification of the depth-stack filter cartridge. If you have any questions, please contact us for more details.
The Depth Stack Filter employs a multi-layer filtering structure, achieving more efficient and precise feature extraction by processing images or signals layer by layer. Compared to traditional single-layer filters, it offers the following advantages:

Q1: What is a Depth-Stack Filter Cartridge?
A1: A Depth-Stack Filter Cartridge (also called a lenticular depth filter) is a filter cartridge that uses multiple stacked depth filter sheets to capture contaminants throughout the entire filter matrix. It combines mechanical interception, depth filtration, and electrostatic adsorption for comprehensive liquid purification.
Q2: What industries commonly use Depth-Stack Filter Cartridges?
A2: These cartridges are widely used in pharmaceutical and biotechnology (API clarification, vaccine production, buffer filtration), food and beverage (beer, wine, juice, edible oil), and fine chemical industries.
Q3: How does the gradient pore structure improve filtration?
A3: The gradient pore structure has progressively smaller pores from outer to inner layers. Large particles are captured in outer layers, while fine contaminants are trapped in inner layers. This maximizes the use of the entire filter media and enables up to 3x higher dirt-holding capacity than conventional depth filters.