BUCHI - Model C-900 -Pure Essential Chromatography System
The Pure Essential Chromatography system focuses on the essentials for any basic flash application. The design of the instrument, its modularity, and user-friendliness make it easy for you to take the first steps into automation and profit from increased speed and endless possibilities.
- Detection: UV
- Pump: Flash mode
- System Design: Modular and fully automated
No-frills chromatography
Designed for simplicity, power, and safety, all within a small footprint, the Pure Essential Chromatography System is ideal for crowded labs and users taking their first steps into automated chromatography. The instrument’s focus is on getting the core components right and includes a powerful 50 bar pump, an easily configurable UV detector, and a fraction collector that can be added if required.
Supporting you in every step of your research journey, the modular and scalable Pure Essential Chromatography System was designed to grow with your research needs. Offering unmatched flexibility and scalability for your separation process.
Revolutionizing user-friendly flash separations with state-of-the-art software for method programming, run data, and parameter adjustments. Experience seamless with the Pure Essential Chromatography System that simplifies every step of the separation process, ensuring safe and efficient operation.
Additional options
Customize your system with a wide range of cartridge holders, sample loading choices, and volume capacities (5-1000 mL) to suit your application. Rest assured that the Pure Essential Chromatography System has the ability to grow with your needs.
Connect any type of flash cartridge (4-5000 g) or glass column (ID up to 100mm, lengths up to 900mm), and even add a high-pressure mixing chamber (2.5-22mL) for proper solvent mixing, especially helpful when mixing low concentrations.
Experience seamless separation processes with intelligently automated features that guide you through priming, equilibration, sample loading, elution, and rinsing. Comprehensive reporting ensures that all run data is saved and accessible at any time.
Achieve fast and efficient separations with a powerful 50 bar pump able to handle even the most demanding tasks. Enjoy optimal safety and control offered by pressure sensors, regulators, and a pulsation-free flow.
Simplify your separations with a highly configurable setup meeting the needs of any application. The Pure Essential Chromatography System was intelligently designed with a focus on getting the essentials right.
A system that grows with your needs. Further enhance your purification process with the addition of an optional UV detector and fraction collector to the Pure C-900 pump, ensuring precise collection and less solvent consumption.
Effortlessly control the system with state-of-the-art software, allowing quick and easy programming of methods and on-the-fly parameter adjustments. Automate your chromatography and get results in a flash.
The Pure Essential Chromatography System is compatible with various vessel sizes and types, allowing liquid or solid loading to cater to your application needs.
Save valuable lab space with a compact instrument with a stackable design, built to handle the rigors of daily use with a steel pump head, sturdy fraction collector racks, and a robust cartridge holder.
Troubleshoot and maintain your instrument with ease thanks to easily accessible tubing and parts. The external UV detector enables fast and simple flow cell cleaning or replacement.

Specification: Value
- Dimensions (W x D x H): 200 x 200 x 410 mm
- Weight: 10 kg
- Power consumption: 90 W
- Supply voltage: 100 – 240 VAC ± 10%
- Frequency: 50/60 Hz
- Fuse: 2 A
- Overvoltage category: II
- Pollution degree: 2
- IP code: 20
- Solvents: 2
- Gradient: Binary
- Max. operating pressure: 50 bar
- Pump
- Flash, 3-piston, pulsation-free, self-priming
- Flow rate: 0 – 300 ml/min
- Flow rate reproducibility: ± 1% at 5 – 250 mL/min
- Gradient accuracy: ± 1%
- Hose connections:
- 1 UNF 1/4"-28
- 2 UNF 5/16"-24
- Safety sensor: Pressure
- Sample injection: Liquid (manual) or solid loading
- Cartridge installation:
- 4 – 330 g at instrument
- > 330 g external
- Separation: Gravity and anti-gravity flow
- Modularity: Yes
- Interfaces
- 2 BUCHI standard communication ports (COM)
- 2 USB ports
- 1 Ethernet port
- Screen: 7" touch screen
- Software languages: 12 languages (en, de, fr, es, it, pt, ru, zh, ja, ko, id, th)
- Wifi: Yes
- Export/Import: Data/Run/Method by USB stick
Ambient conditions
- For indoor use only.
Specification: Value
- Max. altitude above sea level: 2,000 m
- Ambient and storage temperature: 5 – 40 °C
- Max. relative humidity
- 80% for temperatures up to 31 °C
- decreasing linearly to 50% relative humidity at 40 °C
