B702TFH27.5BB FILTER BASKET
B70 2 Cups - H27.5 Big Bang
Cylindrical filter with a flat bottom featuring the patented BIG BANG perforation pattern. This high-capacity model (up to 26g) uses a specialized 585-hole distribution with incremental distance towards the edge to balance extraction across the entire puck.
- Border: Ø 70 mm
- Body: Ø 60 mm
- Height: 27.5 mm
- Tamper: Ø 58/58.4 mm
- Ridge: Ridgeless
- Pattern: Big Bang (585 holes)
Capacities Comparison (Big Bang Series)
| Code | Height | Dark Roasted | Medium Roasted | Light Roasted |
|---|---|---|---|---|
| B702TFH21.5BB | 21.5 mm | 14/16 gr | 15/17 gr | 16/18 gr |
| B702TFH23.5BB | 23.5 mm | 17/19 gr | 18/20 gr | 19/21 gr |
| B702TFH25.5BB | 25.5 mm | 20/22.5 gr | 21/23 gr | 21.5/24 gr |
| B702TFH27.5BB | 27.5 mm | 22/24.5 gr | 23/25 gr | 24.5/26 gr |
Science of Big Bang
The holes start at 1.5mm distance in the center and increase as they move towards the edges. This spacing is mathematically calculated to counteract side-channeling and deliver a more balanced and sweet espresso, even at high doses.
Technical Specification
- Perforated Area: Ø 49 mm area.
- Hole Diameter: 0.30 mm.
- Competition Standard: Relaminated and recalibrated perforation.
- Sanitary Finish: Electropolished for non-stick, non-contaminating quality.
*Testing Disclaimer: All tests about the capacity of the filters were made using:
- Dark: 80% Arabica 20% Robusta blend
- Medium: 100% Arabica Brasile
- Light: Ethiopia single origin
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