4A 4x8 Blue Indicating Molecular Sieve Desiccant Visual Moisture Indicator for Industrial Drying
4A 4x8 Blue Indicating Molecular Sieve Desiccant Visual Moisture Indicator for Industrial Drying - 25kg (55.11 lbs) Drum is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Buy 5+ 25kg drums to save 15%, or 21+ 25kg drums to save 32% — auto-applied at checkout.
| Qty | Discount |
|---|---|
| Buy 5 | 15.92% off each |
| Buy 21 | 32.72% off each |
Product Overview
4A 4x8 Blue Indicating Molecular Sieve Desiccant by Delta Adsorbents is a sodium aluminosilicate zeolite impregnated with an inorganic metal salt indicator. It performs as a standard 4A molecular sieve adsorbing water molecules through its 4 Å pore size while providing a visual color change to signal saturation. Beads are blue when active and turn beige when saturated, making it easy to monitor desiccant life without specialized equipment.
Where it fits
- Natural gas drying: moisture removal from gas streams to protect downstream equipment
- Solvent drying: dehydration of polar liquids such as methanol, ethanol, and other solvents
- Air drying: reliable performance in compressed air and pneumatic systems
- Refrigerant drying: prevention of ice formation, corrosion, and system blockages
- Insulated glass units: static drying to prevent condensation and fogging
Key advantages
- Color change from blue (active) to beige (saturated)
- 4 Å pore size selectively adsorbs water molecules
- High adsorption capacity across humidity conditions
- Strong mechanical strength and low dusting
- Available in multiple industrial packaging formats
Typical specifications
| Form | Spherical beads |
| Mesh size | 4x8 |
| Nominal pore opening | 4 Å |
| Adsorption capacity @ 25 °C, RH 10% | >15% wt |
| Adsorption capacity @ 25 °C, RH 60% | >18% wt |
| Bulk density | >47 lb/ft³ |
| Crush strength | >58 N |
| Size qualification | >97% |
| Package moisture (as shipped) | <6% wt |
| Manufacturer | Delta Adsorbents |
| Lead time | 1–2 weeks |
Values are typical and provided for reference. Final specifications confirmed at quote or via COA.
Packaging & availability
- MOQ: 100 kg (vendor packaging constraint)
- Formats: drums, pails, and bulk bags available
- Lead time: typically 1–2 weeks
Documentation & support
SDS, COA, and technical data sheets are available. Visit our Documentation page or contact us to request documentation or discuss your moisture control project.
Questions & Answers
Q: How does the color change indicator work?
A: The beads are impregnated with an inorganic salt that shifts from blue (active) to beige (saturated), providing a simple visual cue for replacement.
Q: What is the pore size of blue indicating sieves?
A: Approximately 4 angstroms, optimized for selective adsorption of water molecules.
Q: Can blue indicating sieves be regenerated?
A: They can be regenerated by controlled heating to restore adsorption capacity, though repeated cycling may reduce the visibility of the color change.
Q: What industries use blue indicating molecular sieves?
A: Commonly used in natural gas, solvent dehydration, compressed air systems, refrigeration, and insulated glass manufacturing.
Q: What is the minimum order quantity?
A: The standard MOQ is 100 kg, with packaging options available in drums or bulk bags.
Related
4A 4x8 Blue Indicating Molecular Sieve Desiccant Visual Moisture In...
