Secondhand Löwenstein Prisma 25ST BPAP ST Device with Humidifier

Objective AI Report

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Report date: 25.09.2025

Löwenstein Prisma 25ST BPAP Device Analysis Report

Product Description and Intended Use

The product in the images is a Löwenstein brand Prisma 25ST model BiLevel-ST BPAP (Bilevel Positive Airway Pressure) device. The device is a sleep therapy device used to provide respiratory support during sleep. The prismaAQUA module integrated into the device is a humidifier unit that functions to humidify and heat the breathing air. The product is designed for use in the treatment of respiratory disorders such as sleep apnea.

Package Contents and Quantity Information

The product and accessories shown in the images are listed below. In total, there are 10 items of products and documents, including the main device and the humidifier.

• 1 Unit – Löwenstein Prisma 25ST Main Unit
• 1 Unit – Löwenstein prismaAQUA Humidifier Unit (Attached to the main unit)
• 1 Unit – Breathing Hose (Grey, flexible)
• 1 Unit – Power Adapter and Connection Cable
• 1 Unit – Carrying Bag (Black)
• 1 Unit – Original Filter Pack (Unopened, contains multiple filters)
• 1 Unit – User Manuals and Brochures
• 1 Unit – Official documents such as Warranty Certificate and Company Undertaking

General Condition and Physical State

The device appears to be in generally good and well-maintained condition. Its physical state can be described as “used.” There are no visible major scratches, cracks, or breaks on the device’s black plastic casing. Some dust and light signs of use are present on its surface. A portion of a protective tape or gelatin remains on the hose output port; this is an aesthetic detail that does not impede use. The device’s carrying bag, breathing hose, and power adapter are also in good physical condition.

Mechanical and Electronic Components

The device’s mechanical components, such as its buttons, rotary control knob, and the humidifier unit’s latch, appear visually problem-free. No deformation has been observed at the hose connection point or other ports. The device’s screen is off, making it impossible to determine if it is working or if there are any errors on the screen. However, there are no cracks or deep scratches on the screen itself.

Accessories

Important accessories are available with the device. The power adapter and cable are complete. The breathing hose appears sturdy. One of the most notable accessories is a spare filter set with REF code WM 29928, which is unopened and in its sterile package. The carrying bag is also in good condition for storing and transporting the product.

Label and Document Information

The document titled “COMPANY UNDERTAKING” provided with the product contains important information regarding the device’s identity. According to this information, the device’s brand, model, and serial number have been definitively identified.

• Brand Model: Löwenstein Prisma 25ST
• Device Type: BILEVEL-ST BPAP DEVICE
• Device Serial Number: 30179584
• Filter Set REF Code: WM 29928

Additionally, a warranty certificate and various user manuals are also present in the images, but it cannot be determined from the content of the documents whether the warranty is still valid.

Current and Potential Malfunction Status

No significant malfunction or damage (such as breaks, cracks, error codes, etc.) related to the device has been detected in the images. As the device’s general condition is good, no potential risk of malfunction is observed based on visual inspection. There are no alarming issues such as crushed cables or severe wear on the casing. The overall appearance of the product gives the impression that it has been used regularly and carefully.