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White circular glass microfiber filters 12.5 cm diameter pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc Glass Microfiber Filter 12.5 cm 1.5 um PK100

SKU CH-25BA-KJ3B5

Binderless borosilicate glass microfiber filter, 12.5 cm diameter, 1.5 µm pore size, 0.43 mm thick, rated to 500 °C, pack of 100

  • TypeGround Fault and Current Leakage Testers
  • Binderless borosilicate glass microfiber handles 500 °C without degradation
  • 5 µm pore size captures fine particulates in liquids or air
  • 5 cm diameter fits standard filter holders for immediate use
  • 43 mm thickness provides mechanical strength at high flow rates
  • Pack of 100 filters reduces reorder frequency for busy labs

Purpose and Audience

These binderless borosilicate glass microfiber filters are designed for laboratory technicians who need to separate fine particulates from liquids or air streams. The 12.5 cm diameter and 1.5 µm pore size suit routine gravimetric analysis and environmental sampling workflows.

Sustained Load Behaviour

Rated for continuous operation up to 500 °C, the grade TSS media maintains structural integrity during extended high-temperature gravimetric procedures. The 0.43 mm thickness resists tearing when wet, allowing prolonged vacuum filtration without media collapse or fibre migration.

Installation and Common Issues

Each pack contains 100 pre-cut circles that load directly into standard 12.5 cm filter holders. The brittle glass matrix can crack if clamped unevenly or handled with sharp forceps, so technicians should apply uniform pressure and use smooth-tipped tools to avoid premature failure.

Highlights

  • Binderless borosilicate glass microfiber handles 500 °C without degradation
  • 5 µm pore size captures fine particulates in liquids or air
  • 5 cm diameter fits standard filter holders for immediate use
  • 43 mm thickness provides mechanical strength at high flow rates
  • Pack of 100 filters reduces reorder frequency for busy labs

Specifications

BrandLAB SAFETY SUPPLY
TypeGround Fault and Current Leakage Testers

Questions about this item

Does the 1.5 um pore size clog quickly when the filter runs continuously with fine particulates?

The binderless borosilicate glass microfiber handles fine particulates without rapid clogging, and the 0.43 mm thickness provides depth loading for extended continuous runs.

What holder size matches the 12.5 cm diameter so the filter seals properly in my existing filtration setup?

The filter requires a standard 12.5 cm diameter filter holder or funnel with a matching sealing surface; no adapter is included in the package of 100.

Can the 500 Degrees C rating withstand the heat from my older glass manifold without thermal shock cracking the filter?

The borosilicate glass microfiber tolerates 500 Degrees C, well above typical manifold temperatures, so thermal shock is not a concern during normal heating cycles.

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