Secondhand Medwelt 7F-5B 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 13.11.2025

Medwelt 7F-5B Oxygen Concentrator Analysis Report

General Assessment

The product shown in the visuals is an oxygen concentrator designed for use in home or clinical settings for patients requiring respiratory support. The device separates oxygen from ambient air, providing concentrated oxygen to the user’s respiratory tract. Visual analysis clearly identified the product as a Medwelt brand 7F-5B model oxygen concentrator, based on both the inscriptions on the device itself and the information on its original cardboard box. Although the device is used, its overall condition appears to be very good and well-maintained. The presence of its original box indicates that the product has been preserved. The phrase “With nebulizing function” on the box indicates that the device also has a nebulizer feature.

Brand and Model Information

Detailed examinations of the device and its box confirmed the brand and model information with certainty.

• Brand: Medwelt
• Model: 7F-5B

Usage Status and Duration

The digital display on the front panel of the device provides clear information about the product’s usage duration. The value “03915” is read in the “COUNTS (hours)” section of the screen. This indicates that the device has been used for a total of 3915 hours. This usage duration confirms that the device is second-hand. Given its physical condition, it is assessed that the device has been regularly maintained or used carefully.

Physical and Mechanical Condition

The overall condition of the product is very good. No significant deformation such as serious scratches, cracks, breaks, or color fading was observed on the casing. The device’s white plastic casing is clean and spotless.

• Casing: The main casing of the device is clean with no visible damage.
• Mechanical Components: Mechanical parts such as the power button, flow meter adjustment valve, and oxygen outlet port on the front panel are in place and visually free of any problems. The ball inside the flow meter and the liter/minute indicators are clear.
• Humidifier Reservoir: The humidifier water bottle, located in the transparent covered compartment on the front of the device, is present and appears intact.

Electronic Components and Display

The electronic components of the device appear to be in working condition, as understood from the visuals. In one visual, the device’s plug is seen connected to the outlet and its screen is on. This indicates that the basic electronic functions of the device are active.

• Display: The digital LCD screen is intact and functional. Numbers and symbols are clearly legible. The screen features status lights for power (I/O), normal oxygen level, and low oxygen warning.
• Buttons: The POWER button is in good physical condition.

Accessories and Package Contents

The visuals show the device itself and its original cardboard box. Disposable consumables such as nasal cannulas, which would normally be found inside the box, are not visible.

• Included: The device itself, integrated power cable, humidifier water bottle, and original cardboard packaging box.
• Not Visible: Additional accessories such as a user manual, warranty card, or nasal cannula are not present in the visuals.

Label and Box Information

The label on the device’s original cardboard box contains important technical information and the serial number. This information serves as a reference for the product’s originality and technical details.

• Model Number: 7F-5B Oxygen Concentrator
• Serial Number (SN): 191100204
• Weight (G.W.): 26 kg
• Dimensions: 53 x 34.5 x 66 cm³
• Production Date: The date “2019-12-07” is legible on the label, likely indicating the manufacturing or packaging date.

Potential Failure Risk

Based on the examination of the visuals, no obvious wear, rust, crushed cables, or broken parts that could pose a potential failure risk directly affecting the device’s operation were detected. The device’s clean and well-maintained exterior, coupled with its functional electronic components, suggests regular use and a low risk of serious malfunction. Overall, the product is in a physically sound and ready-to-use condition.