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Price shown excludes VAT.
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Eligible customers can claim VAT relief on this product at checkout.
Price shown excludes VAT.
VAT relief available on this product
Eligible customers can claim VAT relief on this product at checkout.
Add the whole set in one go.
ALVERA PureGuard™ Universal In-Line Bacteria Filter for CPAP & BiPAP Machines
£3.99
This item
An in-line bacteria filter sits between the machine outlet and the hose, and it does something the machine's own inlet filter cannot. The inlet filter cleans room air on the way in. The in-line filter guards the boundary between the machine and the wearer, catching bacteria and fine particulate in the airflow and, just as importantly, stopping anything travelling back down the tube toward the blower. That matters in three situations in particular: where a machine is shared between users in a clinical setting, where the wearer has a respiratory infection and the circuit would otherwise be contaminated, and where a machine is loaned, hired or sold on. It is also the cheapest way to protect an expensive device from the inside. Select 1, 5 or 10 pack from the options on this page.
What is included| Item | Detail | Condition |
|---|---|---|
| PureGuard in-line filter | One, five or ten filters depending on the pack size selected | NEW |
What is not included| Item | Detail | Status |
|---|---|---|
| Therapy machine | CPAP or bi-level machine | SOLD SEPARATELY |
| Tubing | Standard or heated tubing | SOLD SEPARATELY |
| Mask and headgear | Any interface | SOLD SEPARATELY |
| Machine inlet filters | The filters fitted inside the machine, a separate item | SOLD SEPARATELY |
Single use, and check for flow resistance
What an in-line filter is forMost people running therapy at home never need one. The machine's inlet filter handles room air, the circuit belongs to one person, and nothing crosses between users. The in-line filter earns its place at the points where that assumption breaks.
Shared or loaned machines. In a clinical setting, a hire fleet or a family where a machine passes between people, the circuit is the shared surface. An in-line filter at the machine outlet, changed between users, is the standard way of protecting the device and the next wearer.
During a respiratory infection. A chest infection or a cold puts organisms into the circuit every night. A filter at the outlet keeps them out of the blower, where nobody can clean them, and reduces the amount of contamination that has to be dealt with once the infection clears.
Protecting the machine. Anything that gets into a blower stays there. An in-line filter is a few pounds against a machine that costs several hundred, and it is the only barrier that works in the direction that matters.
Higher exposure environments. Building dust, smoke, heavy pollen or a house with several pets all load a circuit faster than a clean bedroom.
Check the circuit before ordering
This filter is designed for standard CPAP and bi-level circuits taking a conventional hose connection at the machine outlet. It is not intended for AirMini travel machines, which use a narrow proprietary hose and a mask-specific setup pack with no conventional outlet connection. Where the machine or the circuit arrangement is not certain, ask before ordering with the machine model to hand.
| Brand | Alvera |
| Product | PureGuard universal in-line bacteria filter |
| Reference, 1 pack | 58501 |
| GTIN, 1 pack | 5065027735576 |
| Reference, 5 pack | 58505 |
| GTIN, 5 pack | 5065027735583 |
| Reference, 10 pack | 58510 |
| GTIN, 10 pack | 5065027735590 |
| Pack sizes | 1, 5 or 10, selected on this page |
| Product type | In-line bacteria filter for therapy circuits |
| Position in circuit | Between the machine outlet and the hose |
| Fits | Standard CPAP and bi-level circuits |
| Does not fit | AirMini travel machines |
| Reuse | Single use, disposable, not washable |
| Supplied | Non-sterile |
| Condition | New |
Specification limited to what is confirmed
Filtration efficiency, filter medium, connector sizes, flow resistance and service life are not stated here pending confirmation against the production record and the manufacturer test data, and should not be assumed from the description above. Ask before ordering if any of these figures is needed, and in particular where a filtration efficiency figure is required for an infection control policy.
| Action | Detail | Interval |
|---|---|---|
| Inspect | Check the filter for wetness, soiling, discolouration and crushing | Daily |
| Check the connection | Confirm both ends are fully seated and the circuit holds pressure | Before each use |
| Renew | Fit a fresh filter at the interval given in the instructions, and immediately if it is wet, soiled or damaged | Per instructions |
| Between users | Fit a fresh filter whenever the machine passes to a different person | Every change of user |
| During infection | Renew more frequently while a respiratory infection is present, and fit a fresh filter once it clears | As required |
| Dispose | Dispose of used filters per local policy. Do not wash or reuse | At every change |
The above is general guidance. The instructions supplied with the filter and with the machine take precedence, and in a clinical setting the operating organisation's infection control policy governs.
Alvera is the own-brand accessory range from Elarix Medical, covering the consumables that sleep therapy depends on and that need renewing on a schedule. PureGuard covers in-line bacteria filters, alongside PureFlow machine filters, AirGuard filter covers, AirLink connectors and adapters, AirStrap headgear and clips, ThermaAir heated tubing, AirFlex tubing, AquaPure water chambers, AirSoft cushions and PureWipe cleaning wipes. Products are individually referenced and barcoded, so a repeat order is placed against a code rather than a description.
Specifications can change without notice. Ask us for the current technical file.
UK mainland: Orders placed before 1pm Monday to Friday are dispatched the same working day from Leeds. Deliveries run Monday to Saturday, never Sunday.
UK mainland and islands: standard delivery takes 1 to 3 working days.
Europe, USA and Canada: delivery typically takes 1 to 3 working days.
Other international destinations: delivery usually takes 5 to 7 working days.
Orders shipped outside the United Kingdom may attract import duty and local tax, which are charged by the destination country and are the buyer's responsibility.
SelfiMed offers a 30-day change-of-mind return policy on eligible items. To request a return, please contact us within 30 days of delivery. Items returned under this policy must be in the same condition as received and suitable for resale.
Please note that brand new items must remain unopened, unused and in their original packaging to be eligible for return. Once a new item has been opened or used, it may no longer qualify for return as new, and any accepted return may be subject to restocking fees.
For hygiene reasons, opened CPAP masks, CPAP parts and CPAP accessories, including tubing, filters and humidifier chambers, cannot be returned.
Return shipping costs are the responsibility of the customer.
This does not affect your statutory rights.
Refunds are issued to the original payment method once the returned item reaches us and has been checked, normally within five working days.
Faulty items are refunded in full, including the delivery you paid.
Information on this page is provided for guidance and does not replace advice from a qualified clinician. Always read the manufacturer's instructions before use, and check that a device is suitable for the patient and the prescribed therapy.
Specifications and compatibility are given in good faith and can change without notice.
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