In March 2021, the suitability of APM-2 for continuous ambient air quality monitoring for the fractions PM10 and PM2.5 both in the measuring range 0 to 1,000 μg/m³ according to the MCERTS Performance Standards has been confirmed. You can download the full version of the certificate here.
On May, 13, 2020, the Laboratoire Central de Surveillance de la Qualité de l’Air (LCSQA) attested the conformity of our sampling system PNS 18T-DM for the gravimetric method for determination of concentrations of airborne suspended particulate matter of the fractions PM10 and PM2.5 as well as measurement of the mass concentration of the heavy metals arsenic (As), cesium (Cs), nickel (Ni) and lead (Pb), and polycyclic aromatic hydrocarbons (especially benzo[a]pyrene) in the PM10 fraction.The sampling system can now be found on the list of compliant devices for official measurement on air quality in France. In France, our long-time partner Envicontrol looks forward to answer questions on all issues related to the PNS 18T-DM and gladly gives advice to all our devices from the field of environmental monitoring.
At the end of December 2019, our Chinese subsidiary Comde-Derenda (Wuxi) Measuring Technologies Co. Ltd. was certified for occupational health and safety management according to ISO 45001:2018. The certification confirms the compliance with the management system for health and safety management which is specified by the directive. Aware of its social responsibility, Comde-Derenda Wuxi highly values health protection and safety at work. Therefore occupational safety and health concepts are integrated in all manufacturing processes and business structures. Active implementation of various measures like regular training programs, planning optimization and consolidation of process management as well as raising the awareness and responsibility for health protection and safety issues of all employees helped to continuously enhance the working environment. In the future, Comde-Derenda will furthermore work on the constant improvement of manufacturing processes and the reduction of risks of injury, accidents, and work-related illnesses to optimize the sustainability of all products.
After establishing a company-wide environmental management system according to the regional standards of Brandenburg, Comde-Derenda GmbH gained the certificate “Brandenburger Umweltsiegel“ at the beginning of November 2019. The certification is awarded in the context of the environmental network “Umweltpartnerschaft Brandenburg”. An important goal of the environmental management system is to reduce the usage of energy and materials and to ensure a careful handling of resources by structured working methods. It should also train all employees for a better perception of relevant environmental aspects and establish a responsible handling of materials and their disposal. Mr. Claus Heuberger from the Brandenburg Ministry for Rural Development, Environment and Agriculture presented the certification on 07th November on the company site. The IHK Potsdam was also taking part. For Comde-Derenda GmbH, the successful introduction of environmental management meant an important step towards a more sustainable production process. In the future, all company departments will further optimize their handling of relevant environmental topics and consistently pursue the aim of the greatest possible environmental friendliness.
In August, the certification of suitability according to EN 15267 for the Air Pollution Monitor APM-2 has been extended. The current certificate of TUV Rheinland can be found here. Please find the full report on https://qal1.de/15267/0000040336_01_comde_derenda_APM2_en.pdf.
Comde-Derenda GmbH takes part in the European Aerosol Conference again this year. The conference will take place from 25th to 30th August 2019 in Gothenburg on the exhibition site. Thematically, the biggest European exhibition covers many areas, for example combustion aerosols, chemistry and physics of aerosols, health aspects, indoor and ambient aerosols, nanotechnology and a broad exhibition of measurement and monitoring devices. A detailed program and further information can be found here. Comde-Derenda GmbH presents the new automatic weighing system for environmental monitoring, the AWS-1RE, with fully RFID-aided data handling. We also show the current version 4 of our dust sampler PNS T-DM, as well as other devices of our product lines. We are looking forward to welcome you at our booth. Date: 25th – 30th August 2019 Venue: Exhibition and Congress Center, Korsvägen, Gothenburg Booth number: 11
On 9th of July 2019, a top-ranking Chinese delegation under the direction of the Chairman of the Hebei Provincial Committee of the CPPCC, Mr. Dongsong Ye, visited Comde-Derenda GmbH. At the production site in Stahnsdorf, they were introduced to the company and learned about development and manufacturing of the company’s devices in the field of environmental monitoring. Mr. Ye was accompanied by other members of the Hebei Provincial Committee, inter alia Mr. Weimin Qi, Director-General of the Research Office, Mr. Jing An, Deputy Director-General of the Department of Commerce of Hebei Province and Mr. Lei Cheng, Deputy Director-General of the Foreign Affair’s Office of the People’s Government of Hebei Province. Representatives of the Brandenburg state chancellery and of the Wirtschaftsförderung Brandenburg accompanied the delegation. At the company premises, the managing directors of Comde-Derenda GmbH, Norbert and Haro Derenda, took the visitors on a tour through the production site first. The different devices, manufactured in Stahnsdorf, like a SPM sampling system, an online monitoring device of the APM series and automatic and manual weighing systems were shown in a small exhibition. Afterwards, the company owner, Mr. Norbert Derenda, held a presentation about the company’s history and development focus in environmental monitoring. […]
On Friday 28/06/2019, the remains of the Morandi bridge which collapsed last year in August have been blasted. Many water cannons were on the job to lower the massive dust formation. Our partner Orion was entrusted to provide online devices to monitor and record emissions of particulate matter during and after the explosion. Therefore, they were on site with some of our APM-2 devices. For further information and video of the blast, see The Guardian.
Comde-Derenda Wuxi has been tasked to carry out comparison measurements of PM1 concentration for the “Blue Sky” campaign of the China National Environmental Monitoring Center (CNEMC). By means of those measurements, basic data for the development of PM1 standards and limit values is retrieved. At the same time, data concerning the comparability of measurement results with regard to geographical characteristics and the application of different measurement methods is gathered. Particularly, comparative studies between manual and automatic measurement of fine particulate matter are needed. Results are taken into consideration for technical standards and directives. The first period of pilot PM1 comparison tests took place from October 2017 to January 2019. According to the current directives HJ618 and HJ656, Comde-Derenda has installed measurement stations in six cities (Beijing, Shanghai, Guangzhou, Wuhan, Chongqing and Lanzhou). At each station, measurements have been carried out for each 30 days in all four seasons. As measurement device for manual fine particulate matter measurement, the Low Volume Sampler LVS of Comde-Derenda GmbH has been used. The real-time monitoring devices within the comparison worked with the beta ray attenuation method as well as TEOM method (Tapered Element Oscillating Microscale) and scattered light method (nephelometry). Comde-Derenda Wuxi is responsible […]
The automatic sampling system PNS 16T-DM of the PNS family of Comde-Derenda recently got the marketing authorization for the Korean market. After an invitation to the important Korean exhibition for environmental protection ENVEX, the marketing authorization means a further step on the Asian market. Our subsidiary in Wuxi, founded in 2016, serves the markets of Vietnam, Malaysia, Thailand, Indonesia and Korea and many other countries, together with its distributors. It is also the main contact for customers in the United States of America and Australia.
Comde-Derenda (Wuxi) Measuring Technologies Ltd., hereafter mentioned as Derenda, has won significant package of the Tender published by CNEMC (China National Environmental Monitoring Center) in National Environmental and Air Monitoring Network: Municipal Air Automatic Monitoring Station Operation and Protection Project. This will entitle Derenda to inspect and examine Measurement of PM2.5 (with Derenda Devices). Seen as an important measure in the “Blue Sky” campaign, National Environmental and Air Monitoring Network: Municipal Air Automatic Monitoring Station Operation and Protection Project is implemented in 1436 stations operated by the state and will be executed until end of 2021, making the project duration three years. In the coming three years, Derenda will tour in 17 provincial level entities, including but not limited to Beijing and Tianjin, to execute authorized measurement as inspection and examining of PM2.5 values in 188 cities, which have state owned measuring stations. A renowned manufacturer of measuring devices for particulate matter gravimetric sampling and online monitoring, Derenda offers quality products and service based on our technological competence, among which are high precision mechanical filter changing technology, industrial flow rate variation controlling technology and digital filter handling with RFID and automatization technology as well as integration of cloud technology in […]
In September 2018, Comde-Derenda Wuxi has successfully passed GB/T 19001-2016 / ISO 9001:2015 Quality Management System Certification. The Chinese subsidiary of Comde-Derenda GmbH Stahnsdorf had already been certified according to ISO 9001:2008 and now renewed its certification according to the new standard.Since its foundation, Comde-Derenda Wuxi has continuously strengthened internal process optimization, enhanced service awareness, and steadily improved the development and production of products.The quality management systems standard specified in ISO 9001 is one of the most widely used management tools in the world and is used by more than 1,000,000 companies in 161 countries and regions. It is designed to help companies organize processes, enhance performance, improve internal communication, meet customers needs while complying with legal requirements at the same time and therefore increase customer satisfaction.
In order to intensify and consolidate the Sino-German economic relations, the Prime Minister of the State of Brandenburg Dietmar Woidke visited Beijing and the province of Hebei together with representatives of leading companies and research institutes in September 2018.The General Manager of Comde-Derenda Wuxi, Mr. Nan Deng, spoke at a conference on Green Technologies in Hebei and presented online measuring systems (Air Pollution Monitors – APM), sampling systems (PNS) and weighing systems from our range of products. As a special focus, he described the integration of RFID technology to preserve data consistency during the entire process of particulate matter measurement.Apart from various other research institutes and air quality measurement networks, the China National Environmental Monitoring Center (CNEMC) uses Low Volume Samplers (LVS), sampling systems, APMs and automatic weighing systems (AWS) manufactured by Comde-Derenda. The subsidiary in Wuxi is partner not only for China but for the whole Asia-Pacific area and America.
As part of a regional tour to leading companies in the district of Potsdam-Mittelmark, the economics minister of Brandenburg Albrecht Gerber visited our company on August 15, 2018. The minister was accompanied by the mayor of Stahnsdorf Bernd Albers. The two politicians joined company founder Nobert Derenda and COOs Haro Derenda and Lutz Triebeneck for a walk across the company premises. Both visitors got an overview of the divisions, products and manufacturing sites and talked about the support of research projects as well as development activities and about future delegation trips. Both guests commended Comde-Derenda GmbH’s entrepreneurial courage and ability to innovate.
As in preceding years, you will find us at SightCity, the world‘s biggest exhibition for aids for the blind and the visually impaired. The exhibition features numerous exhibitors from around the world showing a wide range of products for the blind and visually impaired. There will also be a diverse program of informative lectures on aids and services for the blind and on medical advances in the field. SightCity 2017 will take place from 25th to 27th April 2018 at the Sheraton Frankfurt Airport Hotel, located at the Frankfurt/Main international airport. Pierre Klein, Carsten Bey and colleagues from Comde-Derenda look forward to meeting you at booth C6.Date: 25 – 27 April 2018Venue: Sheraton Frankfurt Airport HotelInfo: SightCity 2018
After we were able to keep our prices stable for many years, this year on April 25, 2018, we are forced to raise the selling prices of some of our white canes, cane tips, and accessories. This is due to the increase in purchase prices and personnel costs. We hope to compensate our longtime customers for this circumstance by the high quality of our products and our focus on their individual needs. If you have any questions about the price increases, feel free to contact us at any time. Prices 2018