描述
MacDermid Alpha Micromax 5876 Screen-Printable Ag/AgCl Cathode Paste for Electrochemical and Biochemical Sensors
Type: Ag/AgCl Cathode Paste
Application: Electrochemical & Biochemical Sensors
Ag:AgCl: 32 / 68
Shelf Life: 6 months
Micromax 5876 is a solvent-based silver/silver chloride paste for screen printing on polyester films, best used as a cathode for electrochemical and biochemical sensors. It offers fast drying, low electrode polarization, and high solids for thick prints. Silver chloride depletion for the cathode exceeds 60 minutes, supporting stable long-duration sensor operation.
Micromax 5876 from MacDermid Alpha is a solvent-based silver/silver chloride screen printable paste developed for polyester films. It is best used as a cathode for electrochemical and biochemical sensors, where stable electrochemical behavior over time is critical. The paste offers fast drying, low electrode polarization, and high solids for thick prints. Its Ag:AgCl ratio of 32/68 provides a chloride-rich composition that supports long silver chloride depletion times in sensor applications.
The paste has a density of 2.59 g/cm³, solids 81.5–85.5%, and a viscosity range of 25–35 Pa.s. Micromax 3610 is the listed solvent or thinner, to be used sparingly for viscosity adjustments or to compensate for solvent loss. Only print-treated polyester film substrate should be used. For best results, the paste can also be printed over a silver underlay using Micromax 5000 or Micromax 5025. Care should be taken to avoid contact with reactive metals such as aluminum, brass, and steel.
Mix the paste thoroughly before use with a plastic spatula. If severe settling is found after long storage, mix and then jar roll the sample overnight before use. Box oven drying is 120°C for 3–5 minutes. Reel-to-reel drying is 140°C for 1–1.5 minutes. Typical coat weight is 8–11 mg/cm² on a 160-mesh screen, and silver chloride depletion for the cathode is greater than 60 minutes at 0.5 mA/cm² with 8.5 mg/cm² coat weight. 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 5876 Ag/AgCl cathode paste. Original factory TDS and batch-specific COA are available on request for your electrochemical and biochemical sensor programs.
Request Sample, TDS & Quotation
Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 5876
- Solvent-based silver/silver chloride screen printable paste
- Best used as a cathode for electrochemical and biochemical sensors
- Ag:AgCl ratio 32/68 for chloride-rich cathode behavior
- Fast drying for efficient production
- Low electrode polarization for stable sensor readings
- High solids for thick prints
- Silver chloride depletion (cathode) >60 minutes at 0.5 mA/cm²
- Can be printed over silver underlay (Micromax 5000, 5025)
- Density 2.59 g/cm³; solids 81.5–85.5%; viscosity 25–35 Pa.s
- Coat weight 8–11 mg/cm² on 160-mesh screen
- Drying: 120°C / 3–5 min (box oven); 140°C / 1–1.5 min (reel-to-reel)
- Thinner Micromax 3610; clean-up ethylene glycol diacetate or dipropylene glycol methyl ether
Primary Applications
- Electrochemical sensors — cathode layer with long silver chloride depletion
- Biochemical sensors — printed cathode on polyester films
- Membrane switch conductor — per TDS application table
- Circuits with silver underlay — printed over Micromax 5000 or 5025
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Solvent-based silver/silver chloride screen printable paste | TDS: Screen-Printable Silver/Silver Chloride Paste for Screen Printing |
| Application | Membrane switch conductor (TDS table); cathode for electrochemical and biochemical sensors | TDS: Product Description |
| Solvent or Thinner | Micromax 3610 | TDS: Micromax 3610 |
| Density | 2.59 g/cm³ | TDS: 2.59 g/cm³ |
| Solid Content | 81.5 to 85.5 % | TDS: 81.5 to 85.5 % |
| Ag:AgCl Ratio | 32 / 68 | TDS: 32 / 68 |
| Viscosity | 25 to 35 Pa.s | TDS: Brookfield 0.5RVT, SC4-14/6R, 10 rpm, 25°C |
| Substrate | Print-treated polyester film only; can be printed over silver (Micromax 5000, 5025) underlay | TDS: Compatibility |
| Reactive Metal Contact | Avoid contact with aluminum, brass, and steel | TDS: Compatibility |
| Drying (Box Oven) | 120°C for 3 to 5 minutes | TDS: Drying |
| Drying (Reel-to-Reel) | 140°C for 1 to 1.5 minutes | TDS: Drying |
| Coat Weight (160-mesh screen) | 8 to 11 mg/cm² | TDS: Typical Physical Properties |
| Silver Chloride Depletion (Cathode) | > 60 min | TDS: Typical Physical Properties |
| Depletion Test Conditions | Time to reach 1 V cell voltage at 0.5 mA/cm² with 8.5 mg/cm² coat weight | TDS: Typical Physical Properties footnote |
| Fast Drying | Yes | TDS: Product benefits |
| Low Electrode Polarization | Yes | TDS: Product benefits |
| High Solids for Thick Prints | Yes | 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 spatula. If severe settling is found after long storage, mix and then jar roll overnight before use | TDS: Printing |
| Substrate | Print-treated polyester film only; can be printed over silver (Micromax 5000, 5025) underlay | TDS: Compatibility |
| Reactive Metal Contact | Avoid contact with aluminum, brass, and steel | TDS: Compatibility |
| Thinning | Micromax 3610, used sparingly for viscosity adjustments or solvent loss compensation | TDS: Thinning |
| Drying (Box Oven) | 120°C for 3–5 minutes | TDS: Drying |
| Drying (Reel-to-Reel) | 140°C for 1–1.5 minutes | 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 5876 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
Why is 5876 positioned as a cathode rather than a reference electrode?
The TDS states that 5876 is best used as a cathode for electrochemical and biochemical sensors. Its Ag:AgCl ratio of 32/68 makes it chloride-rich, which supports the cathode side of the electrochemical cell with silver chloride depletion exceeding 60 minutes.
What is the silver chloride depletion time and how is it measured?
Silver chloride depletion for the cathode is greater than 60 minutes. The TDS measures it as minutes to reach 1 volt cell voltage at 0.5 mA/cm² with 8.5 mg/cm² coat weight. This long depletion time supports stable sensor operation over extended use.
What substrate and underlay options work with 5876?
Only print-treated polyester film substrate should be used. For best results, the paste can also be printed over a silver underlay using Micromax 5000 or Micromax 5025. Avoid contact with reactive metals such as aluminum, brass, and steel.
How do box oven and reel-to-reel drying compare for 5876?
Box oven drying is 120°C for 3–5 minutes. Reel-to-reel drying is 140°C for 1–1.5 minutes. Both schedules are listed in the TDS as recommended conditions for their respective processes.
What is the coat weight and screen specification for 5876?
Coat weight is 8–11 mg/cm² on a 160-mesh screen. This is the screen specification used for the typical physical properties in the TDS.
What thinner should be used with 5876?
Micromax 3610 should be used sparingly to make viscosity adjustments or to compensate for solvent loss due to evaporation. Using the recommended thinner keeps print behavior consistent with the TDS values.
How should 5876 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.
Get MacDermid Alpha Micromax 5876 Bulk Pricing and Technical Support
We supply authentic MacDermid Alpha Micromax 5876 Ag/AgCl cathode paste for electrochemical and biochemical sensor programs. Contact our team for bulk quotations, sample availability, technical documentation, and application support.
Inquire Bulk Price & Technical Support
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.
