描述
MacDermid Alpha Micromax 5881 High-Conductivity Ag/AgCl Electrode Ink for High-Salt Gel Sensors
Type: Ag/AgCl Electrode Ink
Application: Electrochemical Sensors
Ag:AgCl: 75 / 25
Shelf Life: 6 months
Micromax 5881 is a solvent-based silver/silver chloride composition designed for screen printing onto polyester film, suitable as an electrode or reference counter electrode for electrochemical sensors. It offers low electrode polarization, high conductivity, excellent stability on contact with high-salt gels, and excellent long-term printability.
Micromax 5881 from MacDermid Alpha is a solvent-based silver/silver chloride composition developed for screen printing onto polyester film. It is suitable for use as an electrode or reference counter electrode for electrochemical sensors, where stable electrochemical performance and long-term printability matter. The Ag:AgCl ratio of 75/25 delivers a silver-rich composition that supports high conductivity and low electrode polarization. The paste also shows excellent stability on contact with high-salt gels, which is relevant for sensor designs that use gel electrolytes.
The paste has a density of 2.96 g/cm³, solids 80.5–82.5%, and a viscosity range of 52–62 Pa.s. Micromax 8210 is the listed solvent or thinner, to be used sparingly for viscosity adjustments or to replace evaporation losses. Polyester film substrates should be used. 5881 can also be printed over silver (Micromax 5000, 5025) or over carbon (Micromax 7105). Care should be taken to minimize contact of silver/silver chloride compositions with metals, especially reactive metals such as aluminum or brass; no contact should occur. Components made of these materials can be protected by taping or covering with an inert material. It is best to use a polyester screen when printing to minimize contact with reactive metals.
Mix thoroughly with a plastic or coated spatula before use. If settling is found after long storage, mix and then jar-roll the composition sample overnight before use. A mask mesh of 280–325 is specified, with typical film thickness of 18–20 μm and theoretical coverage of 100 cm²/g. Box oven drying is 110–130°C for 8–10 minutes with adequate airflow; reel-to-reel drying is 130–140°C for 3–4 minutes with adequate airflow. Adhesion is 5B class by ASTM D3359-78, and resistivity is 20–50 mΩ/sq at 25.4 μm. Typical EKG properties show DC offset below 5 mV and AC impedance below 60 Ω. Clean-up uses ethylene glycol diacetate or dipropylene glycol methyl ether. Store sealed at 5–30°C; unopened shelf life is 6 months.
Genuine MacDermid Alpha Micromax Imported Stock & Technical Support
We hold regular stock of authentic MacDermid Alpha Micromax 5881 Ag/AgCl electrode ink. Original factory TDS and batch-specific COA are available on request for your electrochemical sensor programs.
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Key Features of MacDermid Alpha Micromax 5881
- Solvent-based silver/silver chloride composition for screen printing onto polyester film
- Suitable as an electrode or reference counter electrode for electrochemical sensors
- Ag:AgCl ratio 75/25 for silver-rich, high-conductivity behavior
- Low electrode polarization for stable sensor readings
- High conductivity with resistivity 20–50 mΩ/sq at 25.4 μm
- Excellent stability on contact with high-salt gels
- Excellent long-term printability
- Can be printed over silver (Micromax 5000, 5025) or carbon (Micromax 7105)
- Adhesion 5B class per ASTM D3359-78
- Typical EKG: DC offset <5 mV, AC impedance <60 Ω
- Density 2.96 g/cm³; solids 80.5–82.5%; viscosity 52–62 Pa.s
- Thinner Micromax 8210; clean-up ethylene glycol diacetate or dipropylene glycol methyl ether
Primary Applications
- Electrochemical sensors — electrode or reference counter electrode layer
- High-salt gel sensor builds — where stability on gel contact matters
- EKG-related sensor applications — DC offset <5 mV and AC impedance <60 Ω
- Membrane switch conductor — per TDS application table
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Solvent-based Ag/AgCl composition for screen printing | TDS: Silver/Silver Chloride Composition for Screen Printing |
| Application | Membrane switch conductor (TDS table); electrode or reference counter electrode for electrochemical sensors | TDS: Product Description |
| Solvent or Thinner | Micromax 8210 | TDS: Micromax 8210 |
| Density | 2.96 g/cm³ | TDS: 2.96 g/cm³ |
| Solid Content | 80.5 to 82.5 % | TDS: 80.5 to 82.5 % |
| Ag:AgCl Ratio | 75 / 25 | TDS: 75 / 25 |
| Viscosity | 52 to 62 Pa.s | TDS: Brookfield RVT UC&S, 10 rpm, 25°C |
| Mask Mesh | 280 to 325 | TDS: 280 to 325 |
| Drying Time | 8 to 10 minutes | TDS: 8 to 10 min |
| Drying Temperature | 110 to 130 °C | TDS: 110 to 130 °C |
| Theoretical Coverage | 100 cm²/g | TDS: 100 cm²/g |
| Recommended Film Thickness | 18 to 20 μm | TDS: 18 to 20 μm |
| Adhesion | 5B class | TDS: ASTM D3359-78 |
| Resistivity | 20 to 50 mΩ/sq at 25.4 μm | TDS: 20 to 50 mΩ/sq |
| Substrate | Polyester film; can be printed over silver (Micromax 5000, 5025) or carbon (Micromax 7105) | TDS: Design |
| Reactive Metal Contact | Minimize; no contact with aluminum or brass. Protect components by taping or covering with inert material | TDS: Design |
| Screen Type | Polyester screen recommended to minimize contact with reactive metals | TDS: Printing |
| Drying (Box Oven) | 110–130°C for 8–10 minutes with adequate airflow | TDS: Drying |
| Drying (Reel-to-Reel) | 130–140°C for 3–4 minutes with adequate airflow | TDS: Drying |
| EKG DC Offset | < 5 mV | TDS: Typical Physical Properties |
| EKG AC Impedance | < 60 Ω | TDS: Typical Physical Properties |
| Low Electrode Polarization | Yes | TDS: Product benefits |
| High Conductivity | Yes | TDS: Product benefits |
| Stability on High-Salt Gel Contact | Excellent | TDS: Product benefits |
| Long-Term Printability | Excellent | TDS: Product benefits |
| Clean-up Solvent | Ethylene glycol diacetate or Dipropylene glycol methyl ether | TDS: Clean-up solvent |
| Shelf Life | 6 months | TDS: 6 months |
| Storage Temperature | 5 - 30 °C | TDS: 5°C - 30°C |
Note: All listed values are typical and may vary by batch. Values based on MacDermid Alpha official TDS. Independent qualification testing is required prior to production use.
Recommended Processing Conditions
| Parameter | Recommended Value | TDS Reference |
| Mixing Prior to Use | Mix thoroughly with a plastic or coated spatula. If settling is found after long storage, mix and jar-roll overnight before use | TDS: Printing |
| Substrate | Polyester film; can be printed over silver (Micromax 5000, 5025) or carbon (Micromax 7105) | TDS: Design |
| Reactive Metal Contact | Minimize; no contact with aluminum or brass | TDS: Design |
| Screen Type | Polyester screen recommended | TDS: Printing |
| Mask Mesh | 280 to 325 | TDS: 280 to 325 |
| Thinning | Micromax 8210, used sparingly for viscosity adjustments or solvent loss compensation | TDS: Thinning |
| Drying (Box Oven) | 110–130°C for 8–10 minutes with adequate airflow | TDS: Drying |
| Drying (Reel-to-Reel) | 130–140°C for 3–4 minutes with adequate airflow | TDS: Drying |
| Clean-up Solvent | Ethylene glycol diacetate or Dipropylene glycol methyl ether | TDS: Clean up solvent |
Handling and Storage Recommendations
| Storage Rules | Store tightly sealed in a clean, stable environment at 5-30°C. | TDS: 5°C - 30°C |
| Shelf Life | 6 months in unopened containers from date of shipment. | TDS: 6 months |
| Pre-use Preparation | Thoroughly mix prior to use. Some settling of solids may occur during storage. | TDS: thoroughly mix |
| Transportation | Under normal shipping conditions, no temperature control is expected. For extended transport periods, confirm product suitability. | TDS: normal shipping conditions |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | MacDermid Alpha Micromax 5881 original factory technical data sheet | Request TDS |
| COA | Batch-specific certificate of analysis | Request COA |
| SDS | Safety Data Sheet for handling and storage | Request SDS |
Frequently Asked Questions
What makes 5881 suitable for high-salt gel sensors?
The TDS lists excellent stability on contact with high-salt gels as a product benefit. This matters for electrochemical sensor designs that use gel electrolytes, where the electrode must remain stable over time without degrading the printed layer.
How does the 75/25 Ag:AgCl ratio in 5881 affect performance?
A silver-rich ratio of 75/25 supports high conductivity and low electrode polarization. This differs from the chloride-rich 32/68 ratio of 5876, which is positioned as a cathode.
What EKG performance does 5881 show?
Typical EKG properties list DC offset below 5 mV and AC impedance below 60 Ω. These values support use in EKG-related sensor electrodes.
Can 5881 be printed over silver or carbon layers?
Yes. 5881 can be printed over silver (Micromax 5000, 5025) or over carbon (Micromax 7105). Avoid contact with reactive metals such as aluminum or brass, and use a polyester screen to minimize metal contact.
What are the drying conditions for 5881?
Box oven drying is 110–130°C for 8–10 minutes with adequate airflow. Reel-to-reel drying is 130–140°C for 3–4 minutes with adequate airflow.
What adhesion class does 5881 achieve?
Adhesion is 5B class per ASTM D3359-78. This supports reliable performance on polyester film substrates in sensor builds.
How should 5881 be stored?
Store tightly sealed at 5–30°C in a clean, stable environment. Unopened shelf life is 6 months from shipment. Some settling may occur, so mix thoroughly before reuse.
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We supply authentic MacDermid Alpha Micromax 5881 Ag/AgCl electrode ink for electrochemical sensor programs. Contact our team for bulk quotations, sample availability, technical documentation, and application support.
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Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
