DS-11 Microvolume Spectrophotometer

Best-in-Class performance and features

Compare the DeNovix DS-11 Series vs. the NanoDrop™ One spectrophotometer. Scientists consistently rate the DS-11 Five Stars on independent review sites !

Total measurement confidence

The patented* DS-11 combines unique hardware and software features to deliver unmatched confidence in sample accuracy, performance and reliability.

• SmartPath^® Technology  – real time, precise pathlength control delivered every time
• Exceptional for proteins – BridgeTesting^® eliminates broken sample columns common on other platforms
• SmartQC™  Contamination Alerts – Instant sample QC guidance
• Calibration and maintenance free. No measurement drift, no service down-time. Accurate results every time.

* Patent US9442009

Easy to learn. Fast to use.

DS-11 instruments feature the most powerful and intuitive software of its type. Designed by life scientists, pre-installed EasyApps^® and a breakthrough Android™ touchscreen interface delivers error-free operation and sample to data in under 4 seconds. Every instrument is ready to measure right out of the box – no PC set-up or software installation.

Microvolume mode

SmartPath^® Technology

SmartPath Technology is at the heart of all microvolume measurements on the DS-11 Series. The proprietary algorithms provide ultra-precise by using real-time absorbance feed assessment to determine the optimum pathlength with which to measure the sample. This enables a best-in-class lower detection limit (0.75 ng/ul dsDNA, 0.60 ng/ul RNA or 0.04 mg/ml BSA) and the highest max detection (37,500 ng/ul of dsDNA or 1,125 mg/ml of BSA protein).

BridgeTesting^®

A major concern for microvolume spectrophotometers, especially those that use a 1 mm pathlength, is sample column breakage. When this occurs, the upper and lower measurement pedestals are not bridged with sample and the measurement will be erroneous by as much as 1,000% (not a typo). The DS-11 Series is inherently less susceptible to this since the max pathlength is 0.5 mm and the sample is continually compressed during measurements rather than stretched. In addition, DeNovix has developed a proprietary algorithm that detects in real-time if the sample column has broken and then compensates to ensure accurate results are achieved with no user action being required. No other microvolume spectrophotometer has this capability and this method is especially beneficial for quantification of low surface tension fluids such as protein samples. You can learn more about BridgeTesting technology in this TechNote.

SmartQC™ contamination alerts

DeNovix SmartQC™ software alerts the user and advises on potential issues.  Its features include :

• Automatically identifies and flags samples with suspected contamination
• On-screen guidance to potential sources of contamination
• Advanced spectral analysis and alerts to sample measurement anomalies
• Surface Check – alerts users if previous sample hasn’t been removed
• Report data with quality control metrics

Always calibrated

Since the DS-11 Series does not rely on fixed path length calibrations and therefore does not require regular calibration checks. There is no downtime or expense required for routine calibration like many other spectrophotometers. DeNovix offers a LC-NA verification standard for labs that may need to verify proper operation from time to time in accordance with their own quality standards.

Truly 1.0 ul sample volumes

A key feature of the DS-11 is that the longest path length used (0.5 mm path) is shorter than the 1.0 mm path used by other microvolume spectrophotometers. This enables the DS-11 to truly measure 1.0 ul samples, virtually eliminating the possibility of erroneous results due to sample column breakage.

Cuvette mode

DS-11+ cuvette mode

Enables up to 10 mm pathlength measurements using standard quartz or disposable cuvettes extending the UV-Vis lower detectible limit. The built-in cuvette heater controls temperatures for Kinetics studies. These added features provide a full range of UV-Vis absorbance quantitation in a single instrument.

Extended range

Using the 1 cm cuvette mode enables a lower detection limit 20 times below what is available on the microvolume mode of the DS-11 without the use of fluorescent dyes to gain sensitivity. Measure samples with concentrations as low as 0.04 ng/ul of purified dsDNA or 0.002 mg/ml purified BSA in cuvette mode.

Kinetics

Create simple kinetics methods measuring two absorbance wavelengths over a user-defined measurement frequency and period.  EasyApps^® streamlines the process to create and save custom methods and enables cuvette temperature control between 37°C to 45°C.

Cell culture OD 600

The high-particulate nature of bacterial cell cultures benefit from a longer measurement pathlength. The particulates in these samples scatter light, and a 10 mm pathlength provides a longer cross-section of the sample for the spectrophotometer’s light beam to travel through. This ensures the highest degree of accuracy and reproducibility when measuring these types of samples.

Connect to your results

Built-in Wi-Fi, Ethernet and USB allows easy export of data you want in the format you need. Email a .csv or color .jpg of your results, save data to LIMS or network drives, print results or graphs to network and label printers and more !

Upgrade to fluorescence

To take advantage of enhanced sensitivity and specificity, the DS-11 can be upgraded to add fluorescence capability with the addition of the FX module allowing any DS-11 to also function as a highly sensitive fluorometer. Alternatively, the DS-11 FX Series integrates both microvolume, cuvette absorbance and fluorescence into one compact instrument.

Color choices

The DS-11 and DS-11+ are available in four color choices :

DS-11 key features

•   Intuitive app Icons for quick recognition
•   Familiar Android navigation touch gestures and functional icons
•   Fluid pinch, zoom glove compatible touch interface
•   AutoRun option for streamlined operation
•   Optimized screens for reports and graph overlays
•   Password protected accounts for project and data management
•   Absorbance represented as 1 cm equivalent for all apps- no confusion between applications
•   Sample name field is key-focused for easy barcode reader use
•   All data is automatically archived and easily exported in tab-delimited format

Absorbance :

• Separate preconfigured apps for optimized workflow
• Preconfigured and user defined factors for ssDNA ensures appropriate concentration calculations
• High absorbance capability: up to 37,500 ng/ul for dsDNA
• 260/280 and 260/230 ratios displayed
• 11 Preconfigured dyes and fluorophores for Microarray
• Option to add an unlimited number of new dyes for quick recall in Microarray