Waters Alliance 2795 Separations Module & 2487 Dual Absorbance Detector

SKU: 3370034


1 in stock


The Waters 2795 Separations Module & Waters 2487 Detector powers on and will need to be validated/calibrated to ensure accurate results. Inquire if validation/calibration is available from seller for an additional cost.

There are some minor cosmetic defects on the front, side and top panels. See photos for details.


The 2795 HPLC System includes the Waters 2487 HPLC Absorbance UV-Vis Detector. 

  • The Waters 2795 HPLC System integrates solvent and sample management with consistent system-to-system performance and high reproducibility. The Waters chromatography system ensures the reliability of results through high injection precision for precise quantification and exceptional retention time repeatability for accurate peak identification. The 2795’s solvent delivery system features quaternary blending with a fixed delay volume for consistent and predictable results, regardless of system back pressure. With pulse-free solvent delivery through the serial flow path without the use of dampeners and accurate flow from online solvent degassing and automated solvent compressibility for, the Waters HPLC system truly features advanced solvent delivery capabilities.
  • The 2487 is the most sensitive and versatile absorbance detector available for HPLC; it features advanced programmability, dual wavelength capability, unmatched signal-to-noise performance, reduced optical bandwidth, and exceptional linearity.

Waters HPLC systems are built for various applications and routinely used in analytical environments, such as food safety, forensic, research and development, quality control, and chemistry and pharmaceutical laboratories.


Waters 2795 HPLC System Specifications

Number of solvents

One to four

Solvent conditioning

Vacuum degas, two (2) operating modes, four (4) chambers, ≈<500 uL internal volume per chamber> <500uL interval volume per chamber

Programmable flow rate range

0.000 and 0.010 to 10.000 mL/min in 0.001-mL/min. increments

Typical operating flow rate range

0.050 to 5.000 mL/min in 0.001-mL/min increments

Compressibility compensation

Automatic and continuous

Effective system delay volume

<650 µL, independent of backpressure @ 1 mL/min

Plunger seal wash

Integra, active, programmable

Gradient profiles

Eleven (11) gradient curves [including linear, step (2 curves), concave (4 curves), and convex (4 curves)]

Dry prime/wet prime

Automatic, front panel control

Flow ramping

Time (0.01 to 30.00 min in 0.01-min increments) to reach maximum flow rate

Maximum operating pressure

5000 psi (345 bar) (0.010 to 3.000 mL/min) Programmable upper and lower limits. Pressure fall-off at >3.000 mL/min.

Pressure ripple

≤2.5% (1 mL/min, degassed methanol, at 1700 psi backpressure)

Composition accuracy

±0.5% absolute, independent of backpressure (Proportioning Valve Pair Test [degassed methanol:methanol/propylparaben, 2 mL/min, 254 nm])

Composition precision

≤0.15% RSD or ≤0.02 min SD, whichever is greater, based on retention time. (Degassed methanol:water 60:40 Dial-a-Mix, 1 mL/min, six replicates, phenone mix, 254 nm.)

Flow precision

≤0.075% RSD or ≤0.02 min SD, based on retention time (N = 6) or volumetric measures (0.200 to 5.000 mL/min), isocratic premix

Flow accuracy

±1% or 10 µL/min, whichever is greater, (0.200 to 5.000 mL/ min), degassed methanol, at 600 psi backpressure

Additional information

Weight 155 lbs
Dimensions 32 × 37 × 31 in
Make Waters
Model 2795, 2487
Serial D10SHC 028A
Working Working
Item Condition Used
Includes ALL cables (power and data)|Power Cord
Warranty 30-Day Warranty, 100% Parts and Labor
Voltage 120V/220V
hertz 50Hz/60Hz
Shipping Type Freight


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