1 — Mouth / rim
Fire-polished and tooled — no sharp edges, no micro-cracks for stress to start from.
Sintered Glass Filter Crucible
Gooch pattern, porosity G1–G4, disc certified.
Filter crucibles with sintered disc fused directly into the body — no cement line to dissolve. Each production lot's pore-size distribution is measured by bubble-point test and recorded against the lot number.
Material
Borosilicate glass 3.3 (ASTM E438 Type I, Class A) with sintered borosilicate disc
Complies with
Ordering information 5 variants
| Cat. no. | Capacity / size | Graduation | Pack |
|---|---|---|---|
| VTN-401-30G1 | 30 mL | G1 (100–160 µm) | 4 |
| VTN-401-30G2 | 30 mL | G2 (40–100 µm) | 4 |
| VTN-401-30G3 | 30 mL | G3 (16–40 µm) | 4 |
| VTN-401-30G4 | 30 mL | G4 (10–16 µm) | 4 |
| VTN-401-50G3 | 50 mL | G3 (16–40 µm) | 4 |
Why this one
- Bubble-point tested per lot
- Porosity stamped on body
- Gravimetric-stable to 500 °C
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