qX2x2
Discover the qX2x2: a temperature-controlled cuvette holder designed for absorbance spectroscopy It offers precise, independent control from 0 °C to 110 °C for both the sample and reference cuvettes, along with built-in stirring. No water cooling is required, thanks to its integrated air-cooling fan. A great fit for space-conscious labs!
AbsorbanceThe qX2x2 is an air-cooled, dual cuvette holder designed for independent temperature control of both the sample and reference cuvettes in UV/Vis spectroscopy. Mounted on a base plate that precisely positions each cuvette in the correct beam path, it requires no alignment. With optical ports on each side of both cuvette holders, it supports absorbance measurements using a 180° beam path for each holder. It accommodates standard 10 mm square cuvettes, with options for slimmer cuvettes using Quantum Northwest’s thermal conductive adapters.
While both cuvette holders are air-cooled, the qX2x2 delivers performance comparable to water-cooled models, maintaining temperatures from 0 °C to 110 °C. It uses thermoelectric (Peltier) temperature control, with forced air efficiently dissipating heat, eliminating the need for a water bath.
The qX2x2 is designed with interchangeable cooling methods. While it ships as an air-cooled unit, it includes built-in water-cooling capabilities. By adding an insulated vest, attaching water inlet and outlet barbs, and connecting a water circulator—available at purchase or as a later upgrade—users can extend the cooling range down to approximately -35 °C. For applications requiring higher temperatures, a high-temperature option enables operation up to 150 °C, incorporating key internal modifications. This option must be selected at the time of purchase. Like all Quantum Northwest sample holders, the qX2x2 provides unsurpassed temperature control, ensuring stable hold temperatures within a fraction of a degree.
Control is straightforward using the TC-1 Temperature Controller, included with purchase. Users can set sample and reference temperatures, stirring speeds, and ramp rates via the TC-1’s front panel or through T-App, Quantum Northwest’s optional control software, which provides features like real-time plotting, scripting, and direct sample temperature measurement when paired with the optional Probe/10K sensor. Even without T-App, the TC-1 display provides a direct readout of the sample temperature when using the Probe/10K.
The qX2x2 integrates with a wide range of spectrophotometers. Browse our available models to find one compatible with your instrument. If an existing model does not fit your instrument or only partially meets your application requirements, contact us to explore customization options.
With efficient air cooling, extended temperature options, and dual independent temperature control, the qX2x2 is a versatile and powerful solution. Whether you need the convenience of air cooling or the extended range of water cooling, it can be adapted to your experimental needs, delivering stability, precision, and ease of use in a compact design.
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Number of samples controlled | 2 Cuvette |
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Designed usage | Absorbance |
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Sample container size | Standard cuvette 12.5 mm x 12.5 mm (outside) |
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Optical ports per cuvette | 2 |
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Optical port dimensions | 12 mm high x 10 mm wide |
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Built-in optical slit holders | 2 per cuvette |
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Cuvette z-height | 15 mm |
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Windowed jacket or vest available | Yes, Optional Vest |
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Method of heat dissipation | Air Circulation (Optional Water Circulation) |
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Programable temperature range |
-40 to 110°C |
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*Temperature range |
0 to 110°C |
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Extended temperature options available | Yes |
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**(Extended) Programable temperature range | -40°C to 150°C |
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**(Extended) Temperature range | -35°C to 150°C |
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Thermistor probes accepted | Probe/10k-qX |
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Magnetic stirring motor type | Stepper |
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Default stirring speed | 1200 rpm |
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Stirring speed range | 1-2500 rpm |
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Stirring speed range (Best performance) | 60-1800 rpm |
*The holder's temperature performance depends on the operating environment and setup conditions, which must support proper heat dissipation and condensation reduction. While the listed temperatures are consistently achieved during testing, they are not guaranteed in all environments or setups. Meeting the ideal setup conditions outlined in the product's manual is necessary to achieve specific temperature stages.
**The extended range applies only when all corresponding High or Low customization options are implemented. The higher limit is extended by the High Limit package option, and the lower limit is extended by the Low Limit package option.
Included
Optional
Tubing for dry gas
Magnetic stir bar (qty 2)
NIST-traceable calibration and performance data
Equipment Cables
TC-1 Dual Temperature Controller
Windowed Jacket
VBarb2
SpanSM1
FiltHoldSM1
RetRingSM1
WindowUV-1in
SLITS qX2
/E (Temp Package Option)
/L (Temp Package Option)
CAL/Dual
ADAPT/Abs/5mm
ADAPT/Abs/2mm
ADAPT/Abs/1mm
ADAPT/Abs/0.5mm
Probe/10k
T-App Software
Water Circulator System (BATH 10)
Probe/10k-qX
Tubing for dry gas
Included
Magnetic stir bar (qty 2)
Included
NIST-traceable calibration and performance data
Included
Equipment Cables
Included
TC-1 Dual Temperature Controller
Included
Windowed Jacket
Optional
VBarb2
Optional
SpanSM1
Optional
FiltHoldSM1
Optional
RetRingSM1
Optional
WindowUV-1in
Optional
SLITS qX2
Optional
/E (Temp Package Option)
Optional
/L (Temp Package Option)
Optional
CAL/Dual
Optional
ADAPT/Abs/5mm
Optional
ADAPT/Abs/2mm
Optional
ADAPT/Abs/1mm
Optional
ADAPT/Abs/0.5mm
Optional
Probe/10k
Optional
T-App Software
Optional
Water Circulator System (BATH 10)
Optional
Probe/10k-qX
Optional
Manufacture
Model
None
qX2x2/stnd
Shimadzu
qX2x2/Shimadzu
Perkin Elmer
qX2x2/PE365
Perkin Elmer
qX2x2/PE1050
Hitachi
qX2x2/Hitachi
Thermo
qX2x2/EVO
Dynamica
qX2x2/Dynamica
Agilent
qX2x2/Cary4000-6000
Agilent
qX2x2/Cary100-300
More information for a custom approach with this product
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