
High Performance Depth filter sheets
The sheets with outstanding clarification performance are widely used in specialist and challenging applications. Due to sheets' stability combined with long sheet life, sterility and integrity, this series covers a wide retention range which enables precise adaptation to each respective filtration task.
Media stability due to high wet strength
A combination of surface, depth and adsorptive filtration
Ideal pore structure for reliable retention of the components to be separated
Use of high-quality raw materials for high clarification performance
Economic service life through high dirt holding capacity
Comprehensive quality control of all raw and auxiliary materials
In-process monitoring ensures consistent quality

*Fine filtration
*Germ reducing filtration
*Germ removing filtration

Operation of filter sheet installed on filter press


The H Series depth filter sheets are made from particularly pure natural materials:
* Cellulose* Natural filter aid diatomaceous earth
* Wet strength resin

Great Wall's range of depth filter sheets are suitable for a wide range of industrial applications, including the filtration of spirits, beers, soft drink syrups, gelatines, cosmetics, and various chemical products. Our H series filters offer exceptional versatility and consistent performance, allowing for reliable separation of components while maintaining high wet strength and stability. The unique combination of surface, depth, and adsorptive filtration ensures effective particle retention, and our filters are made using only premium quality raw materials to ensure maximum clarity and long service life. We employ stringent quality control measures for all materials and in-process monitoring to ensure that our filters consistently deliver exceptional filtration results and cost-effective solutions for our customers.
Model | Flow Time (s)1 | Thickness (mm) | Nominal retention rate (μm) | Water permeability 2 (L/m²/min△=100kPa) | Dry Bursting Strength (kPa≥) | Wet Bursting Strength (kPa≥) | Ash content % |
SCH-610 | 20″-55″ | 3.4-4.0 | 15-30 | 3100-3620 | 550 | 160 | 32 |
SCH-620 | 2′-5′ | 3.4-4.0 | 4-9 | 240-320 | 550 | 180 | 35 |
SCH-625 | 5′-15' | 3.4-4.0 | 2-5 | 170-280 | 550 | 180 | 40 |
SCH-630 | 15′-25' | 3.4-4.0 | 1-2 | 95-146 | 500 | 200 | 40 |
SCH-640 | 25′-35' | 3.4-4.0 | 0.8-1.5 | 89-126 | 500 | 200 | 43 |
SCH-650 | 35′- 45′ | 3.4-4.0 | 0.5-0.8 | 68-92 | 500 | 180 | 48 |
SCH-660 | 45′-55′ | 3.4-4.0 | 0.3-0.5 | 23-38 | 450 | 180 | 51 |
SCH-680 | 55′-65′ | 3.4-4.0 | 0.2-0.4 | 23-33 | 450 | 160 |
50 ml of distilled water to pass 10 cm' of filter sheets under the conditions of 3 kPa pressure and 25°C.
2,The permeability was measured under test conditions with clean water at 25°C (77°F) and 100kPa, 1bar (A14.5psi) pressure.
These figures have been determined in accordance with in-house test methods and the methods of the Chinese National Standard. Thewater throughput is a laboratory value characterizing the differ- ent Great Wall depth filter sheets. It is not the recommended flow rate.
Shenyang Great Wall Filtration Co.,Ltd was established in 1989, it is manufacturer specializing in the production of Filter paper and Filter sheets. The product is used for filtration in the food and beverage industry, Oil industry, chemical industry and food additives and other industries
We have production workshop and Research and Development department, and have the ability to develop new product series with customers.Also, our company is the drafting unit of China's filter paper industry board standard and the first brand of China's filter paperboard.
At present, our company cooperates with many well-known domestic and foreign corporate brands such as: beverages Pepsi and Coca-Cola, beer InBev and Tsingtao Brewery, WACKER chemical industry, etc.,
Our company has professional technicians who are very experienced in filtration; we can provide your company with technical support for filter paper at any time.


Great Wall filter sheets are packaged in hygienic plastic bags and after that in cartons. Special packaging is available on request.

FAQ
1.Q: Are you a factory or a trading company?
A: We are a professional manufacturing factory of Filter sheets, we are able to supply you with top quality and perfect
workmanship. OEM and ODM products.
2.Q: What is your Product material?
A: Our products are made up from high quality wood pulp, cotton pulp, cellulose, diatomaceous earth and so on.
3. Q:What's you sample policy?
A: We can provide some samples free for your test, freight will be paid by your side.
4.Q: Can you do any size?
A: Yes, we can do any size according to your request.
5.Q: What are your manufacturing and shipping time?
A: About 15-25 days after confirming the details.
6.Q: What certification do you have?
A: 1).Quality Management System ISO 9001 and Environmental Management System ISO 14001.
2). Food contact certificates
3). Meet testing Lab requirements
The products are pure natural raw materials, and can be tested according to customer requirements, including calcium and magnesiumion and heavy metal detection