You are using an outdated browser. Unfortunately, this does not allow us to guarantee that our website can be used without any errors. The use of outdated browsers often leads to low speed and security problems, too. We recommend that you install a new version or an alternative browser to get the full functionality of our website.
Precise hydrogen peroxide dosage in chemical disinfection
It is crucial to exclude contamination during the production of pharmaceutical products. Chemical disinfection processes play an important role in this regard. But how do you dose the disinfectant correctly, ensuring the disinfection process runs efficiently and reliably? And how do you monitor and document the process in view of increasingly strict hygiene regulations? Discover how Bürkert can help you achieve reliable and efficient chemical disinfection.
The conventional solution and its weaknesses
In conventional disinfection units, a simple peristaltic pump doses hydrogen peroxide (H2O2). Speeds and dosing quantities are fixed and cannot be re-adjusted. Furthermore, there is no way to effectively monitor the disinfection process and to quickly identify errors.
On/off solenoid valve
H2O2 p pm Sensor
Errors caused by incorrect dosing, a defective pump or a faulty concentration sensor can prevent the required degree of inactivation from being achieved. Troubleshooting is time-consuming and complex. Moreover, the disinfection process has to be repeated. This costs time and money.
To ensure the required degree of inactivation, operators often deliberately dose more hydrogen peroxide than is absolutely necessary. This is because some of the H₂O₂ droplets are blown directly into the chamber by the air flow and do not reach the evaporator unit. However, this overdosing increases the costs of ownership.
The processes used to manufacture pharmaceutical products need to be quick and efficient. However, to reduce the disinfection time of conventional systems, they would have to be on a much larger scale. This leads to increased procurement costs, space requirements and costs for energy, hydrogen peroxide (H₂O₂) and air.
The evaporator unit and the peristaltic pump have a limited capacity. In other words, the conventional solution described above requires different components to suit differently dimensioned autoclaves and their performance. This makes procurement, logistics, production and warehousing extremely complex.
If the disinfection unit consists of many individual parts, logistics and production become considerably more complex. Furthermore, the components must be synchronised before start-up to achieve the desired disinfection result. This adds to the time required for production and start-up.
The Bürkert system solution for reliable and efficient disinfection processes
The Bürkert system solution consists primarily of a liquid flow controller (LFC), a mass flow controller (MFC) and a high-precision stainless steel mixing nozzle for hygienic applications. Hydrogen peroxide and air are optimally mixed to form a fine aerosol, thereby ensuring reliable and uniform inactivation in the disinfection chamber.
The hydrogen peroxide (H2O2) is delivered in a pressurised tank system.
The Type 8719 Liquid Flow Controller (LFC) controls the H2O2 supply.
MFC Type 8746
In the mixing distributor with a two-substance nozzle, hydrogen peroxide
is atomised at a high air speed and under intensive turbulence to form
a very fine aerosol.
This aerosol in the main air flow can now be fed into the disinfection
chamber – and can be heated if required.
Option B If you need an even higher resolution and absolute accuracy or want to
dispense with calibration for various media. Link to 8756 (Coriolis)
The advantages of the Bürkert system solution:
LFC and MFC with digital interfaces permanently send information to a programmable logic controller (PLC). This means that the concentration is additionally checked upstream of and not only by the sensor in the chamber. If a fault occurs in the Bürkert solution, you know earlier and exactly where the fault has occurred and do not have to spend hours searching for it using the trial-and-error method. You do not have to restart the process and can document the disinfection process for each individual batch.
In contrast to the inflexible peristaltic pump, the compact Bürkert solution allows more aerosol to be dosed into the chamber in the same period of time. As a result, the time it takes to reach the degree of inactivation is reduced. This speeds up the disinfection process. A conventional solution would require a larger plant that is much more expensive to operate.
Inside the mixing nozzle, the high speed and twisting force of the air flow break down the low liquid flow of H2O2 into an aerosol. The heating unit required for evaporation in conventional solutions is no longer necessary. This helps to reduce electricity consumption. The Bürkert solution also requires less compressed air, as the air is already accelerated to sound velocity through the small annular gap of the nozzle. The disinfection process using the Bürkert system solution therefore reduces the required amount of hydrogen peroxide, compressed air and electricity.
The Bürkert system solution enables flexible dosing operations because both the LFC and the MFC can be used to flexibly adjust dosing quantities – even on the fly. All this makes the Bürkert system solution easily scalable for differently sized devices. It also enables space-saving machine designs thanks to its compact components and short pipelines.
A complete system solution is easier to integrate into a machine than single components because the system solution components are already matched to one another. The compact unit can be installed either in steel cabinets or on panels, thus saving valuable space.
How the Bürkert system solution saves you time and money
The Bürkert system solution reaches the required concentration level faster and allows disinfection to start sooner. Our example calculation shows that you can shorten your disinfection process by up to 20% in each individual cycle. Download our brochure and learn more about the potential savings you can make with the Bürkert system solution.
Flyer Plant Utilities-Chemical Disinfection
Faster disinfection process increases efficiency and reliability