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Waters Alliance 2695 HPLC system with Waters 2487 Dual Absorbance UV/Vis Detector

Waters Alliance 2695 HPLC system with Waters 2487 Dual Absorbance UV/Vis Detector
Waters Alliance 2695 HPLC system with Waters 2487 Dual Absorbance UV/Vis Detector

Solvent Management


Number of solvents

One to four

Solvent conditioning

Vacuum degas, two operating modes, four chambers, 500 µL internal volume per chamber

Flow rate range

0.000 to 10.000 mL/min (0.050 to 5.000 mL/min typical) in 0.001 mL/min increments

Compressibility compensation

Automatic continuous

System delay volume

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

Plunger seal wash

Integral, active, programmable

Gradient profiles

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

Dry prime/ wet prime

Automatic front panel control, SystemPREP function for automatic solvent(s) purge

Flow ramping

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

Maximum operating pressure

500 psi (345 bar)(0.010 to 3.000 mL/min) programmable upper and lower limits

Composition range

0.0% to 100.0%, in 0.1% increments

Composition accuracy

+0.5% absolute, independent of backpressure (proportioning valve pair test,[degassed methanol: methanol/proplyparaben, 2.0 mL/min, 254nm])

Composition precision

<0.15% RSD or <0.02 min SD, six replicates, based on retention time or volumetric measures (0.200 to 5.000 mL/min),isocratic premix

Flow accuracy

+1% or 10 µL/min, which is greater, 0.200 to 5.000 mL/min,

Sample management


Number of samples vials

120 vials, configured in five carousels of 24 vials each

Number of sample injections

1 to 99 injections per sample vial

Sample delivery precision

Typically <0.5% RSD, 5 to 80 µL (degassed methanol: water 60:40 dial-a-mix, 1 mL/min, six replicates, phenone mix, 254 nm)

Sample  carryover

<0.01% for caffeine, under specified conditions

Injection needle wash

Integral, active, programmable

Injection accuracy

+1µL (+2%)(50µL, N-6), sample: 100% degassed water, analytical solvent: 100% degassed methanol

Standard sample vial

2 mL

Advanced operations

Priority samples, auto additions, auto standards

Injection volume range

0.1 to 100 µL, standard; 0.1 to 2000 µL, with optional sample loop

Injector linearity

>0.999 coefficient of deviation (1.000 to 100.000 µL)

Minimum sample required

10 µL, using low volume inserts

Sample temperature control (optional)

4 to 40°C, programmable in 1°C increments

Column heater (optional)

20 to 65 °C, in 1 °C increments (5°C above ambient)

Column heater/cooler(optional)

Ambient minus 15°C to 4°C (whichever is greatest) up to 65°C, in 1°C increments

Waters 2487 Dual Absorbance UV/Vis Detector



Wavelength range

190 to 700 nm


<5 nm

Wavelength accuracy

+1.0 nm

Wavelength repeatability

+0.1 nm

Single λ dry noise

<5 µAU
(at 230 nm, 1 –second digital filter, 30-second segments, 10-Hz data rate, analytical cell)

Wet noise

<8 µAU
(at 230 nm, 1-second digital filter 30-second segments, 10-Hz data rate, analytical cell)

Dual channel noise (dry)

<35 µAU
(measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; dry, analytical cell)

Dual channel noise (wet)

<45 µAU
(measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; 1 ml/min, flow of acetonitrile, analytical cell)


<5% at 2.5 AU, propylparaben at 257 nm


1.0 x 10-4 AU/hr. max (∆T = +2°C/hr.)

Thermal drift

1.0 x 10-4 AU/°C max (∆T = +2°C/hr.)

Sensitivity setting range

0.0001 to 4.0000 AUFS

Filter setting range

Single-wavelength: 0.1 to 5.0 seconds
Dual-wavelength: 1 to 50 seconds


To 5.0-second Hamming filter

Digital data rates

1,2,5,10,20,40,80 Hz (single channel)
1,2 Hz (dual channel)

Analog output data rates (single λ mode)

10,20,40,80 Hz (channel A)
10 Hz only (channel B)

Lamp source

30-W High Brightness Deuterium lamp, 0.5 nm aperture, pre-aligned 2000 silicon photodiodes (matched pair)

Second-order filter

Automatic for wavelengths > 370 nm

Wavelength calibration filter

Erbium filter, used at startup or on demand

Flow cell

TaperSlit flow cell design

Nitrogen purge

Purge fitting present on optics bench

Path length

10 mm (standard analytical)

Cell volume

10 µL (standard analytical)

Pressure limit

6895 kPa (69 bar,1000 psi)


316 stainless steel, fused silica, Tygon

Operating temperature

4 to 40 °C (39 to 104 °F)

Operating humidity

20% to <95%, noncondensing

Shipping and storage

-30 to +60 °C

Shipping and storage humidity

0% to <95% noncondensing

This refurbished Waters Alliance 2695 HPLC system comes with a NEW IN BOX Waters 2487 Dual Absorbance UV/Vis Detector. They are in a great condition.

A 90 days warranty is include.

We are professionals. We encourage you to contact us to speak with one of our expert and professional team. Thanks for looking and we look forward to hearing from you!
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