The Macylab UL-4000 is a compact, standalone micro-volume UV-Vis spectrophotometer designed for the quantitative and qualitative analysis of biological samples. Operating with an automatic scanning wavelength range of 190nm to 850nm, it is primarily utilized for testing nucleic acids, proteins, and bacterial cell cultures.
Unlike basic models that require external PC control, the UL-4000 functions as an independent workstation. It is equipped with an internal data storage capacity of approximately 100,000 records and a built-in thermal printer for immediate data output. Utilizing a Xenon flash lamp and a 3648-pixel linear CCD array detector, the instrument performs rapid analytical scans in under 5 seconds using a minimum sample volume of just 0.5μL.
Key Features
Micro-Volume & Cuvette Dual Function: Features a “2 in 1” design that supports both micro-volume drop testing (0.5–2μL) on the optical pedestal and standard cuvette testing (OD600 detection) for evaluating the growth density of bacterial and yeast liquid cultures.
Standalone Operation & Printing: Operates independently with a built-in system (English and Chinese language support). It includes a built-in thermal printer for direct result printing and can store up to 100,000 copies of detection data, which can be exported via a USB interface.
Instant Testing (No Warm-Up): Utilizes a Xenon flash lamp that flashes only during measurement. It requires no standard warm-up time, allowing direct and immediate testing upon startup.
Intelligent Automated Measurement: Engineered for workflow efficiency, the system supports intelligent measurement that initiates the detection process directly without requiring manual key presses once the sample is loaded.
Wide Dynamic Range: Capable of directly measuring double-stranded DNA (dsDNA) concentrations from a lower limit of 2 ng/μL up to an upper limit of 15,000 ng/μL without requiring manual dilution for most samples.
Durable Optical Pedestal: The micro-volume measurement pedestal is constructed from 304 stainless steel and quartz, providing a durable testing surface that resists sample carryover.
Specifications
Parameter
Specification
Model
UL-4000
Minimum Sample Size
0.5 μL (0.5 to 2 μL required)
Wavelength Range
190 – 850 nm (Auto scanning)
Wavelength Accuracy
1 nm
Wavelength Resolution
≤0.3 nm (FWHM at Hg 253.7nm)
Optical Distance (Micro-volume)
1mm / 0.2mm / 0.05mm (optional)
Optical Distance (Cuvette)
10mm / 5mm / 2mm / 1mm
Absorbance Range
0.005 – 300 A (10mm equivalent)
Absorbance Test Range
0.010.5Abs. ±0.01Abs | 0.580Abs. ±2%
Absorbance Accuracy
2% (0.76 at 257nm)
Absorbance Resolution
0.002 Abs (at 1mm optical distance)
Detection Range (dsDNA)
Lower limit: 2 ng/μL | Upper limit: 15,000 ng/μL
Protein Measurement Range
0.1 – 100 mg/mL
Measurement Time
< 5 Seconds
Light Source
Xenon flash lamp
Detector
3648-pixel linear CCD array
Sample Pedestal Material
304 Stainless Steel and Quartz
Data Export & Printing
USB interface / Built-in thermal printer
Display Language
English and Chinese
Power & Voltage
24W | AC100-240V; 50-60Hz
Dimensions (W x D x H)
200 × 130 × 136 mm
Weight
≤2.5 KG
Applications
The UL-4000 is utilized in life sciences, molecular biology, and biotechnology for routine analytical testing:
Nucleic Acid Quantification: Rapid concentration and purity assessments for dsDNA, ssDNA, and RNA to support downstream applications like PCR and sequencing.
Protein Analysis: Direct protein concentration measurements across a wide measurement range (0.1 – 100 mg/mL).
Cell Culture Monitoring: Measuring bacterial and yeast cell density (OD600) utilizing the instrument’s standard cuvette slot.
Field and Mobile Testing: On-site biochemical testing supported by the instrument’s compact size, built-in printer, and independent operation capabilities.
Who is it for?
Molecular Biology Laboratories: University and research institute labs that handle nucleic acid and protein extracts, requiring broad dynamic range measurements without sample dilution.
Clinical and Medical Research: Testing facilities conducting genetics and proteomics research that require fast, reliable concentration readouts without relying on an external computer.
Mobile Testing & Field Research: Environmental or agricultural testing units needing a compact, portable instrument that can immediately print results on-site.
Why choose it?
Elimination of External PC Requirements: The integration of a built-in thermal printer and massive onboard storage (100,000 records) eliminates the need for a dedicated PC. This saves laboratory bench space and ensures data is retained and easily exported via USB.
Workflow Efficiency: By requiring only 0.5μL of the sample and utilizing intelligent automated measurement without warm-up time, the UL-4000 significantly accelerates repetitive laboratory testing workflows.
Certified Qualifications: The instrument complies with major international product qualifications and electrical safety standards, holding certifications including the European CE mark, North American ETL, FCC, RoHS, China CQC, and 3C.
Packaging, Installation & Operation
Packaging & Shipping
After unpacking the instrument, compare the contents with the packing list and check that all items are present and undamaged.
Installation & Setup
Place the spectrophotometer in a suitable location away from direct sunlight, dust, corrosive gases, and strong vibrations. For stable operation, keep it away from strong magnetic or electrical fields and electrical devices that may generate high-frequency fields.
Keep the area around and underneath the instrument clear to allow adequate airflow.
Use the appropriate power cord and connect the instrument to a grounded outlet.
Initial Operation
Turn on the spectrophotometer and allow it to warm up for the recommended time before taking measurements. Follow the instrument’s operating instructions to complete any required system initialization, calibration, or wavelength verification before measurement.
Exhibition
FAQ (Frequently Asked Questions)
No. The UL-4000 functions as a standalone unit. It features an internal system capable of storing approximately 100,000 data records and a built-in thermal printer for direct result output. Data can also be exported to a flash drive via the USB interface.
The instrument requires a minimum sample volume of just 0.5μL. A volume between 0.5μL and 2μL is sufficient to complete the test on the micro-volume pedestal.
No. The UL-4000 is equipped with a Xenon flash lamp that does not require the standard warm-up time typical of traditional spectrophotometers. It is ready for testing immediately upon startup.
Yes. The instrument features a “2 in 1” design that includes standard cuvette optical distances (10mm/5mm/2mm/1mm). This supports OD600 detection functions for measuring the growth density of cells, bacterial liquids, and yeast.
For most applications, dilution is not required. The UL-4000 has a wide detection range, capable of measuring dsDNA concentrations up to 15,000 ng/μL directly.
