Easily list your scientific equipment

Top suppliers for laboratory & industry

New and used instruments

Marketplace
Analytics
Location
Zevenhuizen - Netherlands
Price
€2,000.00 
(ex. VAT)
This item is
for sale
State of item
used
Categories

Knauer 2 Channel Semi Preparative Online Degasser

€2,000.00 (ex VAT)
item image

Description from the supplier

Knauer 2 Channel Semi-Preparative Online Degasser

The Knauer Online Degasser, a pre-owned, 2-channel system, is meticulously engineered for semi-preparative flow rates of up to 50 ml/min. At the heart of its design lies the cutting-edge Teflon AF fluoropolymer degassing membrane. Boasting over 200 times the gas permeability of standard Teflon, this membrane ensures excellent physical and chemical stability, enhancing system performance and reliability.

Its superior efficiency enables a reduced internal chamber volume of less than 7.7 ml per channel, optimizing the degassing process. For isocratic HPLC applications, the two chambers can be linked in series, delivering peak degassing efficiency. In gradient applications, simultaneous degassing of up to two eluents is feasible, while specialized applications may utilize a single degasser across multiple HPLC systems. The low dead volume ensures rapid reconditioning and minimizes solvent waste.

Key features include broad chemical compatibility suitable for general HPLC operations, zero hysteresis at higher flow rates, and minimal maintenance requirements—replacing check valves or other components is unnecessary, even under continuous operation. This system effectively prevents air bubble spikes in chromatograms, reduces retention time fluctuations, and resolves gradient reproducibility issues. Additionally, it mitigates the unwanted formation of chromophores that can hinder UV detection, oxidation or reduction interference with electrochemical detection, and fluorescence quenching.

Technical Specifications:

  • **Dimensions**: 85 x 165 x 315 mm (W x H x D)
  • **Weight**: 2.5 kg
  • **Power Supply**: 85 – 265 V, 47 – 63 Hz, 20 W
  • **Max. Flow Rate**: Up to 50 ml/min
  • **Number of Channels**: 2
  • **Degassing Method**: Gas permeation through Teflon AF amorphous fluoropolymer membrane
  • **Degassing Efficiency**: < 0.5 ppm residual dissolved O2 at 1 ml/min
  • **Dead Volume**: 7.7 ml
  • **Solvent Applicability**: Universal, excluding hydrochloric acid and halogenated hydrocarbons, particularly hexafluoro isopropanol (HFIP)
  • **Wetted Materials**: PEEK, Tefzel, Teflon AF
  • **Vacuum Chamber**: Polypropylene and stainless steel

This second-hand system represents an exceptional option for laboratories seeking reliable, advanced degassing capabilities without compromising on performance or efficiency.

About QuestPair

QuestPair is a platform to find and acquire laboratory equipment by connecting research organisations, universities, and companies with high-quality, affordable instruments. The platform facilitates multiple sales daily worldwide and works with partners around the globe to provide trusted, vetted products for a wide variety of scientific needs. Our in-house developed AI algorithms collect data on the usage and availability of scientific instruments, enabling us to provide tailor-made assistance in sourcing suitable laboratory equipment. With a focus on cost-effectiveness and sustainability, QuestPair has an excellent track record in streamlining acquisitions for laboratories to further scientific research and development.

Related items:
People are watching right now:
Corepoint Scientific CPBOD231WSW-0 BOD Refrigerated Incubator-cover
Corepoint Scientific CPBOD231WSW-0 BOD Refrigerated Incubator

Corepoint Scientific CPBOD231WSW-0 BOD Refrigerated Incubator Refrigerant R600A Temperature Setpoi (more)nt Range -10C to 50C Capacity 23 Cu. Ft. Capacity Features - 23 cubic feet of space, perfect for accommodating diverse sample types across various fields of study. - Equipped with a variable-speed compressor that ensures exact temperature settings ranging from -10°C to 50°C, ideal for sensitive research applications. - The Proportional Integral Derivative microprocessor with an LCD display allows easy monitoring and precise control, enhancing experimental results. - Utilizes eco-friendly R600a refrigerant and includes a necessary defrost feature at low temperatures, ensuring optimal performance and energy efficiency. - Designed with high-density urethane foam insulation and a white powder-coated steel exterior, meeting EPA standards for a greener footprint. - Audible and visual alarms for power failure, temperature deviations, and door ajar status. The Corepoint Scientific CPBOD231WSW-0 BOD Refrigerated Incubator is expertly designed to provide precise and reliable environmental conditions for a wide range of laboratory applications. Featuring a substantial 23 cubic feet of space, this incubator is ideal for biochemical oxygen demand (BOD) testing and other research requiring controlled temperatures. The temperature can be precisely set between -10°C to 50°C, managed by a Proportional Integral Derivative (PID) microprocessor with an LCD display that ensures optimal conditions are consistently maintained. The unit includes five adjustable wire shelves for customizable storage, shielded LED interior lighting for clear visibility, and a rear wall port for external probe access. Mobility and stability are enhanced with four swivel casters, two of which are lockable. Constructed with a durable white powder-coated steel exterior and high-density urethane foam insulation, it ensures efficient thermal management. Security and monitoring are prioritized with a keyed door lock and comprehensive alarm systems, including audible and visual indicators for power failure, temperature deviations, and door ajar alerts. The incubator uses eco-friendly R600a refrigerant and features a defrost system suitable for low temperatures. With dimensions of 26 7/8" wide, 36 3/4" deep, and 80 1/2" high, this incubator is designed for indoor use in environments with specific temperature and humidity conditions, making it an excellent choice for laboratories seeking reliable and secure environmental conditioning. INCLUDED: The Corepoint Scientific CPBOD231WSW-0 BOD Refrigerated Incubator includes: - Key for Door Lock - 4 Swivel Casters - 5 Adjustable Wire Shelves - Power Cord - Operator's Manual - Manufacturer's Documentation - 1 Year Manufacturer's Warranty

$8,162.00 ex VAT
United States
incubators
Disclaimer: QuestPair assumes no responsibility or liability for any errors or omissions in the content of this site. The information contained in this site is provided and presented on an “as is“ basis with no guarantees of completeness, accuracy, usefulness or timeliness.

Customer Service

Here to help you with: Product Inquiries, Shipping & Support, Technical Support, Business Inquiries and Press.

We are available to assist you Mon-Fri, 10am - 5pm CET.

+31 (0) 73 7114717
[email protected]