We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White circular glass microfiber filter discs 4.7 cm diameter in pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc LABEXACT 12K999 Glass Microfiber Filter 4.7 cm 1.5 um PK100

SKU CH-39Y5-07H0Z

Glass microfiber filter, 4.7 cm diameter with 1.5 µm pore size, binderless borosilicate material rated to 550 °C, pack of 100

  • TypeGround Fault and Current Leakage Testers
  • Binderless borosilicate glass resists chemical attack
  • 5 µm pore size captures fine particles
  • 7 cm diameter fits standard filter holders
  • Withstands 550 °C for high-temperature work
  • Pack of 100 filters supports high-volume testing

Lab Safety Glass Microfiber Filter

The Lab Safety Supply LABEXACT 12K999 is a binderless borosilicate glass microfiber filter designed for laboratory filtration of liquids or air. It suits technicians and researchers who need a consistent 1.5 um pore size for particle retention or clarification tasks.

Thermal Stability Up to 550 Degrees C

The filter withstands a maximum operating temperature of 550 Degrees C, making it suitable for hot gravimetric analysis or heated gas streams. Its 0.43 mm thickness provides structural integrity during vacuum or pressure filtration without excessive flow restriction.

Replaces Generic Grade VSS Discs

This pack of 100 discs replaces bulk Grade VSS filters when traceable quality and a 4.7 cm diameter are required. The jump is worth it for workflows that demand binderless purity and a verified 1.5 um rating across every disc in the box.

Highlights

  • Binderless borosilicate glass resists chemical attack
  • 5 µm pore size captures fine particles
  • 7 cm diameter fits standard filter holders
  • Withstands 550 °C for high-temperature work
  • Pack of 100 filters supports high-volume testing

Specifications

BrandLAB SAFETY SUPPLY
TypeGround Fault and Current Leakage Testers

Questions about this item

How do I install the 4.7 cm glass microfiber filter without tearing the 0.43 mm binderless borosilicate media?

Place the filter flat on the holder support screen, clamp the funnel gently to avoid point pressure on the thin glass microfiber, then apply vacuum or pressure gradually so the 1.5 µm pores wet evenly without rupturing the fragile matrix.

When should I replace the VSS-grade filter during gravimetric analysis?

Replace the filter when the pressure drop across the 1.5 µm pores rises sharply or when the collected particulate cake reaches the method’s maximum loading, since the binderless borosilicate media cannot be cleaned or regenerated.

What is the first limit reached when filtering hot liquids continuously at 550 °C?

The binderless borosilicate glass microfiber begins to sinter and lose pore integrity at the maximum operating temperature of 550 °C, so sustained use at that temperature degrades the 1.5 µm pore structure before any other component fails.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.