UV-Vis Spectrophotometer

I. Product Overview

A UV-Vis spectrophotometer is an analytical instrument based on the absorption characteristics of substances in the ultraviolet-visible region (typically 200-800 nm). It is widely used in chemistry, biology, environmental science and other fields.

II. Applications

It can be widely used in scientific research and production in various fields such as organic chemistry, biochemistry, pharmaceutical analysis, food inspection, medical and health care, environmental protection and life sciences.

III. Executive Standards (Partial)

Metrological Standard:
JJG 178-2007 UV, Visible and Near-Infrared Spectrophotometers

Air and Waste Gas Standards:
1. GB/T 15516-1995 Ambient Air - Determination of Formaldehyde - Acetylacetone Spectrophotometric Method
2. HJ 479-2009 Ambient Air - Determination of Nitrogen Oxides (Nitric Oxide and Nitrogen Dioxide) - N-(1-Naphthyl)ethylenediamine Dihydrochloride Spectrophotometric Method
3. HJ 533-2009 Ambient Air and Waste Gas - Determination of Ammonia - Nessler's Reagent Spectrophotometric Method

Water Quality Standards:
1. GB/T 5750.5-2023 Standard Examination Methods for Drinking Water - Inorganic Non-metallic Indicators
2. HJ 535-2009 Water Quality - Determination of Ammonia Nitrogen - Nessler's Reagent Spectrophotometric Method
3. HJ/T 346-2007 Water Quality - Determination of Nitrate Nitrogen - UV Spectrophotometric Method
4. GB/T 7493-1987 Water Quality - Determination of Nitrite Nitrogen - Spectrophotometric Method
5. GB/T 11893-1989 Water Quality - Determination of Total Phosphorus - Ammonium Molybdate Spectrophotometric Method
6. HJ 636-2012 Water Quality - Determination of Total Nitrogen - Alkaline Potassium Persulfate Digestion UV Spectrophotometric Method

Soil and Sediment Standards:
1. HJ 745-2015 Soil - Determination of Cyanide and Total Cyanide - Spectrophotometric Method
2. HJ 998-2018 Soil and Sediment - Determination of Volatile Phenols - 4-Aminoantipyrine Spectrophotometric Method
3. HJ 833-2017 Soil and Sediment - Determination of Sulfide - Methylene Blue Spectrophotometric Method

IV. Key Features

1. High-resolution Czerny-Turner (C-T) monochromator delivers excellent stability, reproducibility and accuracy.

2. Low-stray-light 1200 lines/mm holographic grating and optimized optical path design ensure higher measurement accuracy.

3. 10-inch high-resolution color LCD touch screen with clear and intuitive data and spectrum display and simple operation.

4. A brand-new wavelength drive mechanism greatly improves wavelength accuracy and repeatability while effectively reducing operating noise.

5. Independently developed automatic wavelength calibration technology automatically calibrates the wavelength and provides a warm-up countdown, ensuring wavelength accuracy and repeatability.

6. Massive data storage capacity, storing up to 40,000 historical curves.

7. Supports exporting A4 test reports via USB flash drive, one-key data backup and item-by-item data recovery, with up to 80,000 curves backed up.

8. Key components such as the deuterium lamp, tungsten lamp, photocell and precision lead screw all adopt well-known imported brands, ensuring reliable instrument quality.

9. Debug-free installation of the tungsten and deuterium lamps; independently designed lamp replacement windows with a flange-type positioning structure for easy replacement.

10. By connecting to Wi-Fi, the instrument supports remote OTA software upgrades, making function expansion more convenient.

11. Rich stand-alone functions including time measurement (kinetic measurement), photometric measurement, quantitative measurement, spectral scanning and multi-wavelength testing, meeting different measurement requirements and displaying results directly on screen.

12. Open and spacious sample compartment accommodates cuvette holders from 10 mm to 100 mm to meet different applications.

13. Records the lighting hours of the tungsten and deuterium lamps, making it easy to track light source life and reduce maintenance costs.

V. Product Functions

1. Photometric Measurement: Select the desired single-point test wavelength and measurement mode to measure the absorbance or transmittance of a sample.

2. Quantitative Measurement: Measure sample solutions of unknown concentration using a curve with known parameters or by automatically establishing a standard solution curve. Supports first-, second- and third-order curve fitting methods, and various test methods including single-wavelength, dual-wavelength, dual-wavelength coefficient and three-wavelength methods. Standard curves can be stored and recalled.

3. Spectral Scanning: Set a wavelength range and scanning interval, then measure the absorbance, transmittance and energy of solid or liquid samples at intervals. Measured spectra can also be overlaid, zoomed, peak/valley detected, saved and printed.

4. Time Measurement: Also called kinetic measurement, it scans the sample at time intervals for absorbance or transmittance at a set wavelength point. Measured spectra can be processed by various methods such as overlay, zoom and peak/valley detection.

5. Multi-Wavelength Measurement: Enables measurement of sample solutions at multiple wavelength points; according to the set wavelength points, it measures the absorbance or transmittance of the sample solution at multiple wavelengths.

6. Auxiliary Functions: Cumulative lighting time of the deuterium and tungsten lamps, independent on/off of the deuterium and tungsten lamps, UV/visible light switching wavelength point selection, operation language selection, dark current correction, automatic wavelength calibration, etc.

VI. Technical Parameters