Models: JK1820 / JK1821 / JK1822 / JK1823 / JK1825
DiffuLayer® JK Series glass microfiber filter discs are available in five filtration grades and multiple standard diameters. They are suitable for laboratory filtration, electrochemical testing, particle collection, sample preparation, and prefiltration.
Each model provides a different balance of particle retention, filtration speed, and loading capacity.
| Parameter | JK1820 | JK1821 | JK1822 | JK1823 | JK1825 |
|---|---|---|---|---|---|
| Grade | GF/A | GF/B | GF/C | GF/D | GF/F |
| Pore Size | 1.6 μm | 1.0 μm | 1.2 μm | 2.7 μm | 0.7 μm |
| Product Positioning | General-purpose and balanced | Medium-high precision | Conventional fine filtration | High-loading prefilter | High-precision filtration |
| Filtration Speed | Relatively fast | Medium | Medium | Fast | Relatively slow |
| Loading Capacity | Relatively high | Medium | Medium | High | Medium |
| Recommended Applications | Electrochemical testing and general filtration | Particle retention | Sample preparation | High-turbidity samples and prefiltration | Fine-particle filtration |
Quick Selection: JK1820 for general laboratory use; JK1823 for particle-rich or high-turbidity samples; JK1825 for fine filtration; JK1821 for approximately 1.0 μm particle retention; JK1822 for approximately 1.2 μm particle retention.
| Feature | Description |
|---|---|
| Five Grades | Covers nominal retention ratings from 0.7 to 2.7 μm |
| Ready-to-Use Discs | No additional cutting required |
| Multiple Diameters | Available in Φ25, Φ47, Φ90, Φ110, and Φ150 mm |
| Depth Filtration | Particles are retained within the microfiber structure |
| Good Liquid Absorption | Suitable for filtration and electrochemical wetting |
| Unified Model System | Easy identification, purchasing, and inventory control |
Laboratory filtration: Clarification of solutions, suspended-particle removal, particle collection, and sample preparation.
Electrochemical research: Electrolyte wetting tests, electrode separation, separator screening, and comparative performance studies.
Environmental testing: Collection and filtration of wastewater particulates, airborne particles, and low-concentration suspended matter.
Prefiltration: JK1823 is recommended for highly turbid or particle-rich samples to reduce clogging of downstream fine filters.
Select a disc diameter suitable for the holder, fixture, or electrode.
Handle the disc with clean tweezers.
Place it flat in the device without folding or damaging the edge.
Pre-wet with the test liquid or electrolyte when required.
Increase vacuum or pressure gradually.
After use, process, store, analyze, or dispose of the disc according to the test procedure.
| Requirement | Recommended Model |
|---|---|
| General filtration and electrochemical tests | JK1820 |
| Approximately 1.0 μm particle retention | JK1821 |
| Approximately 1.2 μm particle retention | JK1822 |
| High-turbidity samples and prefiltration | JK1823 |
| Fine-particle filtration and environmental analysis | JK1825 |
Handle with clean tweezers and avoid direct contact with the active filtration area. Select a disc slightly larger than the electrode when used as an experimental separator. Avoid folding, stretching, or repeated use. For strong acids, alkalis, high temperatures, or special solvents, perform a compatibility test before use. Store sealed in a clean, dry, and dust-free environment.
What is the main difference between the five models?
They differ mainly in nominal particle retention, filtration speed, and loading capacity.
Is nominal particle retention the same as absolute pore size?
No. Glass microfiber filters use a depth-filtration structure, so nominal retention is not equivalent to a uniform absolute pore size.
Which model is suitable for general laboratory use?
JK1820 provides a balanced combination of filtration precision, speed, and loading capacity.
Which model is recommended for particle-rich samples?
JK1823 is recommended for high-turbidity samples and prefiltration.
Is JK1825 always the best choice?
No. It provides finer filtration but may clog faster when processing samples with high particle concentrations.
Can the discs be reused?
Single use is recommended to avoid contamination, structural damage, and changes in filtration performance.
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DiffuLayer® JK Series Glass Fiber Filter (Discs)
| Product Model | Product Parameters | Specification | Price (USD) |
|---|---|---|---|
| JK1820 | GF/A Pore Size: 1.6 μm Balanced general-purpose grade | Φ25 mm_100 pcs | $52 |
| Φ47 mm_100 pcs | $88 | ||
| Φ90 mm_25 pcs | $162 | ||
| Φ110 mm_100 pcs | $185 | ||
| Φ150 mm_100 pcs | $343 | ||
| JK1821 | GF/B Pore Size: 1.0 μm Medium-high precision grade | Φ25 mm_100 pcs | $76 |
| Φ47 mm_100 pcs | $124 | ||
| Φ90 mm_25 pcs | $94 | ||
| Φ110 mm_25 pcs | $117 | ||
| Φ150 mm_25 pcs | $242 | ||
| JK1822 | GF/C Pore Size: 1.2 μm Standard fine-filtration grade | Φ25 mm_100 pcs | $59 |
| Φ47 mm_100 pcs | $90 | ||
| Φ90 mm_25 pcs | $180 | ||
| Φ110 mm_25 pcs | $236 | ||
| Φ150 mm_100 pcs | $410 | ||
| JK1823 | GF/D Pore Size: 2.7 μm High-loading prefilter grade | Φ25 mm_100 pcs | $73 |
| Φ47 mm_100 pcs | $126 | ||
| Φ90 mm_25 pcs | $86 | ||
| Φ110 mm_25 pcs | $132 | ||
| JK1825 | GF/F Pore Size: 0.7 μm High-precision filtration grade | Φ25 mm_100 pcs | $122 |
| Φ47 mm_100 pcs | $234 | ||
| Φ90 mm_25 pcs | $144 | ||
| Φ110 mm_25 pcs | $216 | ||
| Φ150 mm_25 pcs | $388 |
Partial references citing our materials (from Google Scholar)
Carbon Dioxide Reduction
1. ACS Nano Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO2 Reduction
The bipolar membrane (Fumasep FBM) in this paper was purchased from SCI Materials Hub, which was used in rechargeable Zn-CO2 battery tests. The authors reported a strain relaxation strategy to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realized an outstanding CO2-to-CO Faradaic efficiency of 96.6% with outstanding activity and durability toward a Zn-CO2 battery.
2. Front. Chem. Boosting Electrochemical Carbon Dioxide Reduction on Atomically Dispersed Nickel Catalyst
In this paper, Vulcan XC-72R was purchased from SCI Materials Hub. Vulcan XC 72R carbon is the most common catalyst support used in the anode and cathode electrodes of Polymer Electrolyte Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), Alkaline Fuel Cells (AFC), Microbial Fuel Cells (MFC), Phosphoric Acid Fuel Cells (PAFC), and many more!
3. Adv. Mater. Partially Nitrided Ni Nanoclusters Achieve Energy-Efficient Electrocatalytic CO2 Reduction to CO at Ultralow Overpotential
An AEM membrane (Sustainion X37-50 Grade RT, purchased from SCI Materials Hub) was activated in 1 M KOH for 24 h, washed with ultra-purity water prior to use.
4. Adv. Funct. Mater. Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High-Current-Density CO2 Electroreduction
In this paper (Supporting Information), an anion exchanged membrane (Fumasep FAB-PK-130 obtained from SCI Materials Hub (www.scimaterials.cn)) was used to separate the catholyte and anolyte chambers.
SCI Materials Hub: we also recommend our Fumasep FAB-PK-75 for the use in a flow cell.
5. Appl. Catal. B Efficient utilization of nickel single atoms for CO2 electroreduction by constructing 3D interconnected nitrogen-doped carbon tube network
In this paper, the Nafion 117 membrane was obtained from SCI Materials Hub.
In this paper, Proton exchange membrane (Nafion 117), Nafion D520, and Toray 060 carbon paper were purchased from SCI Materials Hub.
7. National Science Review Confinement of ionomer for electrocatalytic CO2 reduction reaction via efficient mass transfer pathways
An anion exchange membrane (PiperION-A15-HCO3) was obtained from SCI Materials Hub.
8. Catalysis Communications Facilitating CO2 electroreduction to C2H4 through facile regulating {100} & {111} grain boundary of Cu2O
Carbon paper (TGPH060), membrane solution (Nafion D520), and ionic membrane (Nafion N117) were obtained from Wuhu Eryi Material Technology Co., Ltd (a company under SCI Materials Hub).
Batteries
1. J. Mater. Chem. A Blocking polysulfides with a Janus Fe3C/N-CNF@RGO electrode via physiochemical confinement and catalytic conversion for high-performance lithium–sulfur batteries
Graphene oxide (GO) in this paper was obtained from SCI Materials Hub. The authors introduced a Janus Fe3C/N-CNF@RGO electrode consisting of 1D Fe3C decorated N-doped carbon nanofibers (Fe3C/N-CNFs) side and 2D reduced graphene oxide (RGO) side as the free-standing carrier of Li2S6 catholyte to improve the overall electrochemical performance of Li-S batteries.
This paper used more than 10 kinds of materials from SCI Materials Hub and the authors gave detailed properity comparsion.
The commercial IEMs of Fumasep FAB-PK-130 and Nafion N117 were obtained from SCI Materials Hub.
Gas diffusion layers of GDL340 (CeTech) and SGL39BC (Sigracet) and Nafion dispersion (Nafion D520) were obtained from SCI Materials Hub.
Zn foil (100 mm thickness) and Zn powder were obtained from the SCI Materials Hub.
Commercial 20% Pt/C, 40% Pt/C and IrO2 catalysts were also obtained from SCI Materials Hub.
3. Journal of Energy Chemistry Vanadium oxide nanospheres encapsulated in N-doped carbon nanofibers with morphology and defect dual-engineering toward advanced aqueous zinc-ion batteries
In this paper, carbon cloth (W0S1011) was obtained from SCI Materials Hub. The flexible carbon cloth matrix guaranteed the stabilization of the electrode and improved the conductivity of the cathode.
4. Energy Storage Materials Defect-abundant commercializable 3D carbon papers for fabricating composite Li anode with high loading and long life
The 3D carbon paper (TGPH060 raw paper) were purchased from SCI Materials Hub.
5. Nanomaterials A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS2 Cathode Catalysts
Nafion D520 (5 wt%), and carbon paper (GDL340) were received from SCI-Materials-Hub.
Carbon cloth (W0S1011) and other electrochemical consumables required for air cathode were provided by SCI Materials Hub.
Oxygen Reduction Reaction
1. J. Chem. Eng. Superior Efficiency Hydrogen Peroxide Production in Acidic Media through Epoxy Group Adjacent to Co-O/C Active Centers on Carbon Black
In this paper, Vulcan XC 72 carbon black, ion membrane (Nafion N115, 127 μL), Nafion solution (D520, 5 wt%), and carbon paper (AvCarb GDS 2230 and Spectracarb 2050A-1050) were purchased from SCI Materials Hub.
2. Journal of Colloid and Interface Science Gaining insight into the impact of electronic property and interface electrostatic field on ORR kinetics in alloy engineering via theoretical prognostication and experimental validation
The 20 wt% Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) were purchased from SCI Materials Hub. This work places emphasis on the kinetics of the ORR concerning Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) catalysts, and integrates theoretical prognostication and experimental validation to illuminate the fundamental principles of alloy engineering.
Water Electrolysis
1. International Journal of Hydrogen Energy Gold as an efficient hydrogen isotope separation catalyst in proton exchange membrane water electrolysis
The cathodic catalysts of Pt/C (20 wt%, 2–3 nm) and Au/C (20 wt%, 4–5 nm) were purchased from SCI Materials Hub.
2. Small Science Silver Compositing Boosts Water Electrolysis Activity and Durability of RuO2 in a Proton-Exchange-Membrane Water Electrolyzer
Two fiber felts (0.35 mm thickness, SCI Materials Hub) were used as the porous transport layers at both the cathode and the anode.
3. Advanced Functional Materials Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry-Level Activity and Stability
Anion-exchange membrane (FAA-3-PK-130) was obtained from SCI Materials Hub website.
Fuel Cells
1. Polymer Sub-two-micron ultrathin proton exchange membrane with reinforced mechanical strength
Gas diffusion electrode (60% Pt/C, Carbon paper) was purchased from SCI Materials Hub.
Characterization
1. Chemical Engineering Journal Electrochemical reconstitution of Prussian blue analogue for coupling furfural electro-oxidation with photo-assisted hydrogen evolution reaction
An Au nanoparticle film was deposited on the total reflecting plane of a single reflection ATR crystal (SCI Materials Hub, Wuhu, China) via sputter coater.
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