Double Beam UV Vis Spectrophotometer

Introduction

A double beam UV-Vis spectrophotometer improves measurement stability by comparing sample and reference beams simultaneously. This reduces drift and improves accuracy. It is widely used in pharmaceutical, environmental, and biochemical laboratories for quantitative and qualitative analysis of compounds across UV and visible ranges.

Standards

GB/T 26813-2010-Double-beam ultraviolet-visible spectrophotometers

European Pharmacopoeia 2.2.25-Spectrophotometry, ultraviolet and visible

ASTM E275-08(2022)-Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near-Infrared Spectrophotometers

USP General Chapter <857>-Ultraviolet-Visible Spectroscopy

Complies with the above standards, but is not limited to them.

Features

1. Clear digital or software interface simplifies measurement and data handling.

2. Cuvette holders and accessories suit different sample types.

3. Diffraction grating or monochromator provides precise wavelength selection.

4. Multi-cell or sipper options increase measurement throughput.

5. Low stray-light design supports accurate absorbance readings.

FAQ

What are the main applications of the Double Beam UV Vis Spectrophotometer?

The Double Beam UV Vis Spectrophotometer is used to measure absorbance, transmittance or concentration of samples across a defined wavelength range. It supports quantitative analysis, purity checks, kinetics and quality control in chemistry, biology, pharmaceutical and environmental laboratories.

Which standards and regulations apply to the Double Beam UV Vis Spectrophotometer?

The instrument is designed with reference to IEC 61010 electrical safety requirements and relevant GB/T standards for spectrophotometers, including wavelength and photometric accuracy. Procedures should follow applicable standard methods. Compliance documentation can be provided on request.

What warranty comes with the Double Beam UV Vis Spectrophotometer?

The system is covered for 12 months after shipment, including the main mechanism and electrical controls. Replaceable consumables and routine service items are not part of the warranty. Faults caused by improper installation outside the manual or unauthorised modification are not covered.

Will staff need special training?

No advanced specialist skills are needed for standard operation, though correct sample handling and safety practice should be followed. We supply a detailed manual and start-up support. For multi-user or regulated sites, a short staff training session can be arranged.

What is the typical lead time for order delivery?

Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

How often should the Double Beam UV Vis Spectrophotometer be calibrated?

The unit is calibrated and tested before delivery. For ongoing accuracy, verify it against traceable reference standards every 6 to 12 months, or according to the laboratory quality schedule. We can arrange calibration service and certificates where required.

Are the consumables universal or proprietary?

Common consumables and standard spare parts are available through our service channel and are not locked to proprietary formats. Quote the model and serial number when ordering so the correct items are supplied. Lead time for standard parts is usually short.

Can it be adapted to our requirements?

Yes, common options include different ranges, voltages, accessories, interfaces and capacity or size configurations. We confirm feasibility, specifications and any delivery impact before order confirmation. Custom requirements are reviewed case by case.

How is the Double Beam UV Vis Spectrophotometer commissioned?

Benchtop and standard units typically require only placement and connection before use, while larger systems may need professional commissioning. We confirm the installation requirements at order stage. On-site service and training can be provided if needed.

What should be avoided when using the Double Beam UV Vis Spectrophotometer?

Do not measure highly corrosive or incompatible samples, use dirty cuvettes or skip blank correction. Verify wavelength and photometric accuracy periodically. Follow laboratory safety rules.