Bonsai Flow Hood H14 99.995% HEPA Replacement Filter for XL 24"x18" Flowhood
Bonsai Flow Hood H14 99.995% HEPA Replacement Filter for XL 24"x18" Flowhood is backordered and will ship as soon as it is back in stock.
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Description
Description
The Bonsai HEPAFLOW-XL 24" × 18" HEPA replacement filter keeps your Bonsai XL flow hood delivering clean laminar airflow for agar work, transfers and other contamination-sensitive tasks. It’s a true H14 HEPA filter rated 99.995% efficient at 0.3 microns, and it fits both the Bonsai XL 24" × 18" flow hood and the Bonsai DIY 24" × 18" XL flow hood kit.
Plan on replacing it about every 24 months for typical hobby use, or every 12–18 months in a busy lab. Workspaces with more airborne particulates may need more frequent changes.
- 24" × 18"Filter face
- 99.995%@ 0.3 microns
- 0.8"Resistance
- ~24 moHobby use
- 12–18 moBusy lab
Why replace with a genuine Bonsai filter
- Made to fit – Built for the Bonsai XL 24" × 18" flow hood and the Bonsai DIY 24" × 18" XL flow hood kit.
- True H14 HEPA – 99.995% filtration at 0.3 microns.
- Smooth airflow – 0.8" resistance for consistent laminar flow.
- Long service life – Plan on about 24 months of typical hobby use, and longer with very light use as long as it keeps passing your tests.
- Simple replacement – Designed for a quick, easy filter swap.
When to replace it
- Around 24 months for typical hobby use, or 12–18 months in a busy lab
- Any time it fails an agar plate test
- Sooner in dusty or high-particulate workspaces
- When airflow at the filter face noticeably drops
- If you see more contamination in work done in front of the hood
How to replace it
- Power down. Turn off and unplug the flow hood.
- Remove the old filter. Take out the used filter, handling it carefully to avoid releasing trapped particles.
- Install the new filter. Seat the new filter evenly so it seals around the edges, with the airflow direction matching the hood.
- Run before use. Turn the hood on and let it run before starting sterile work.
Comparing hoods and FFUs? Our flow hood vs FFU guide explains the difference.
Specifications
| Specification | Detail |
|---|---|
| Model | Bonsai HEPAFLOW-XL |
| Fits | Bonsai XL 24" × 18" flow hood; Bonsai DIY 24" × 18" XL flow hood kit |
| Filter grade | H14 HEPA |
| Filter face | 24" × 18" |
| Efficiency | 99.995% at 0.3 microns |
| Resistance | 0.8" |
| Replacement interval | Plan on about 24 months for typical hobby use (12–18 months in a busy lab); confirm with an agar plate test |
The hood it fitsThe Bonsai XL 24" × 18" flow hood gives you a full laminar flow work area for agar, transfers and inoculation.
HEPA filter replacement chart
There's no single expiry date for a HEPA filter. It wears out two ways: dust loading, which tracks run hours and how clean your room is, and aging of the media and gasket seals, which tracks the calendar. Plan on about 24 months for typical hobby use and 12–18 months in a busy lab. Keep it in service as long as it passes an agar plate test and holds its airflow, and replace it sooner if it doesn't.
Our HEPA filter replacement guide explains each row of the chart and walks through four simple tests (agar plates, a flame test, an anemometer reading and a pre-filter check) that tell you when your filter is actually done.
FAQ
Which flow hoods does this fit?
The Bonsai XL 24" × 18" flow hood and the Bonsai DIY 24" × 18" XL flow hood kit.
How long does the filter last?
For typical hobby use, plan on replacing it about every 24 months; in a busy lab running most of the day, every 12–18 months; and in a dusty, round-the-clock space, every 6–12 months. Some manufacturers recommend replacing as often as every 12 months, because filter media and seals age even when the unit isn't running. Treat 24 months as a planning number, and let an agar plate test and an airflow check tell you when it's actually done. Our HEPA filter replacement guide has the full chart and four simple tests.
What efficiency is it rated for?
True H14 HEPA, 99.995% at 0.3 microns.
Is it hard to replace?
No. It’s designed for a quick, simple swap.
How do I know it’s time to replace it?
When it reaches about 24 months of typical hobby use, when it fails an agar plate test, when airflow at the filter face drops, or if contamination in front of the hood increases.
