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Krober O2 Oxygen Concentrator
£599.99
This item
The Kröber O2 Oxygen Concentrator (Model 4.0) is a premium home oxygen system designed to provide consistent, medical-grade oxygen for both children and adults requiring supplemental therapy. Engineered in Germany for long-term reliability, this oxygen concentrator delivers continuous flow oxygen from 0.2 to 5 litres per minute (LPM) with near-silent operation at just 31 dB, making it one of the quietest devices in its class.
Built for comfort and performance, the Kröber O2 features an intuitive digital display that clearly shows oxygen output and system alerts, ensuring patient confidence and ease of use. With its slim, portable design and integrated handle and wheels, it’s easy to reposition throughout the home.

Perfect for patients with chronic respiratory conditions, this concentrator combines advanced technology, minimal maintenance, and unmatched quietness — offering peace of mind for both users and caregivers.
Ultra-Quiet Operation: Only 31 dB noise level — nearly inaudible during use, ideal for home and night-time therapy.
Continuous Oxygen Flow: Adjustable output from 0.2 to 5 L/min for both adults and children.
Digital LCD Display: Backlit screen with real-time oxygen output and system status alerts.
Highly Reliable: Advanced microprocessor maintains consistent compressor performance and oxygen concentration.
Portable & Stable: Integrated handle and wheels for easy movement; lockable wheels prevent tipping.
Easy Maintenance: Two simple filters — dust filter (replace monthly) and inlet filter (replace annually).
German Engineering: Built to exacting standards for continuous use and long-term dependability.
Safety Alerts: Monitors oxygen purity, temperature, and flow rate for safe operation.

| Specification | Details |
|---|---|
| Brand | Kröber |
| Model | 4.0 Oxygen Concentrator |
| Flow Rate | 0.2 – 5 LPM continuous |
| Noise Level | 31 dBA |
| Display | LCD digital display (backlit) |
| Oxygen Type | Continuous flow |
| Power Supply | 230 V, 50 Hz |
| Power Consumption | 280 W |
| Dimensions | 53.5 × 20.3 × 52 cm |
| Weight | 15 kg |
| Filters | Coarse dust (monthly) + inlet filter (annual) |
| Molecular Sieves | Non-replaceable |
| Mobility | Handle and wheels with locking system |
| Recommended Users | Adults and children requiring long-term oxygen therapy |
| Certifications | CE marked, medical device compliant |
1 × Kröber 4.0 Oxygen Concentrator
1 × Plastic Oxygen Bubbler Bottle
1 × 2-metre Nasal Cannula
1 × 15-metre Oxygen Hose
1 × User Manual

The Kröber 4.0 sets a new standard in quietness, comfort, and reliability for home oxygen therapy. Ideal for continuous use in home, clinic, or care settings, it delivers consistent oxygen with minimal noise, easy maintenance, and full digital monitoring.
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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.
SelfiMed Ltd, trading as SelfiMed UK, supplies medical equipment, replacement parts and accessories but does not provide medical advice, diagnosis or treatment. Customers are responsible for ensuring that they are legally authorised to purchase and use any equipment supplied and for complying with all applicable regulations in their country. Certain medical devices may require a valid prescription or clinical directive before dispatch. Components, accessories and kits are supplied as replacement or accessory items unless expressly stated otherwise, and correct assembly, calibration, commissioning and application remain the responsibility of the user or an appropriately qualified professional.
All equipment must be used, maintained and cleaned in accordance with the manufacturer’s instructions. SelfiMed UK accepts no liability for misuse, incorrect assembly, mishandling, unauthorised modification or use outside the manufacturer’s intended purpose, and does not guarantee suitability for any particular clinical outcome unless confirmed in writing. Pre-owned or refurbished equipment should not be used for emergency or critical care without appropriate professional oversight and commissioning. Customers should obtain advice from a qualified healthcare professional or medical device technician where required and assume responsibility for the lawful, safe and appropriate use of the products purchased.
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