BRT-1200V Visible Spectrophotometer

The BRT-1200V Visible Spectrophotometer is a compact, high-precision benchtop analytical instrument engineered for quantitative concentration profiling, routine absorbance screening, and industrial quality control. Designed for environmental testing stations, chemical processing plants, food safety laboratories, and educational institutions, it delivers exceptional photometric stability across the 325 nm to 1000 nm spectral range with a 4 nm bandwidth and ≤0.5 nm wavelength repeatability.

Built with a high-performance single-beam optical layout featuring a 1200 lines/mm holographic grating and a high-sensitivity photocell detector, this reliable Visible Spectrophotometer achieves outstanding transmittance accuracy (±0.3%T) and reliable quantitative linearity. Equipped with a clear dot-matrix LCD display, built-in memory for 200 datasets and 9-standard curve fitting, a high-speed USB PC interface, and a parallel printer port (LPT), the 10 kg BRT-1200V ensures streamlined operation for daily laboratory testing.

Visible Spectrophotometer Measurement & Analysis Capabilities

This single-beam visible spectrometer empowers laboratory technicians to execute standardized photometric and quantitative analytical routines with automated calibration:

Technological Features of BRT-1200V Visible Spectrophotometer

• Single-Beam Optics & 1200 L/mm Holographic Grating

  Features an optimized optical path with a 1200 lines/mm holographic grating and premium photocell detector for high spectral resolution and low optical stray light.

• High Wavelength Repeatability (≤0.5 nm) & 0.1 nm Resolution Display

  Delivers tight wavelength repeatability (≤0.5 nm) with a 0.1 nm resolution digital readout, providing high measurement reproducibility across long analytical runs.

• Automated Zeroing & Microcomputer Processing

  Incorporate automated wavelength adjustment, auto 0A and 100%T baseline zeroing, and microcomputer power management for rapid system warm-up and calibration.

• Spacious Sample Chamber (5 mm to 100 mm Pathlength)

  Accommodates cell holders for cuvettes ranging from 5 mm up to 100 mm pathlength, making it versatile for both high-concentration and dilute sample testing.

• Onboard Storage for 200 Datasets & Standard Curves

  Stores up to 200 sets of measurement data and standard calibration regression equations directly on internal memory without requiring an external computer connection.

• Dual Communications Output (USB & Parallel LPT Port)

  Equipped with a USB port for bidirectional PC software connection and an LPT parallel port for direct printing to dedicated laboratory printers.

Technical Specifications of Visible Spectrophotometer

Standard Package Accessories Included

• Main Host Unit: BRT-1200V Visible Spectrophotometer (1 unit).
• Glass Cuvettes: 10 mm Standard Glass Cuvettes (4 pcs for Visible spectrum testing).
• Quartz Cuvettes: 10 mm Standard Quartz Cuvettes (2 pcs).
• Sample Cell Holder: Standard Multi-Position Cell Holder.
• Power & Data Connectivity: AC Power Adapter Cable, USB Connection Cable.
• Documentation & Software: Operating Instruction Manual, Quality Certificate, Warranty Card.

Testing Workflow & Target Applications

Standardized Testing Workflow:

1. Power on the BRT-1200V; the system automatically executes self-testing, light source activation, and wavelength calibration.
2. Select Photometric or Quantitative testing mode from the dot-matrix LCD menu interface.
3. Place a reference blank solution in the sample chamber and calibrate zero absorbance (0A / 100%T auto adjustment).
4. Load up to 9 standard samples to establish a quantitative calibration curve (or input factor K and offset B), then measure unknown samples for instant concentration readout.
5. Store measurement data (up to 200 datasets) to internal memory, transmit via USB to optional PC software, or output directly to a dedicated printer via the parallel LPT port.

Target Customer Applications:

• Environmental water analysis laboratories (ammonia nitrogen, nitrate, phosphate, and heavy metal testing).
• Agricultural testing stations, soil chemistry labs, and fertilizer quality assurance bays.
• Food & beverage quality control laboratories for colorimetry and concentration screening.
• University chemistry teaching labs, high school science classrooms, and routine industrial QC centers.

Visible Spectrophotometer FAQ

Q1: What is the main difference between a Visible Spectrophotometer and a UV/Vis Spectrophotometer?

A: A Visible Spectrophotometer operates primarily in the visible light spectrum (325–1000 nm) using a tungsten light source. A UV/Vis spectrophotometer covers both ultraviolet and visible light (200–1000 nm) by adding a deuterium lamp for UV analysis.

Q2: How does the 3-method quantitative measurement function work on the BRT-1200V?

A: The BRT-1200V supports concentration calculation using three methods: single-point factor method, direct coefficient input ($C = KA + B$), or multi-point standard curve fitting using up to 9 standard samples directly on the device interface.

Q3: What cuvette pathlengths can be used in the BRT-1200V sample chamber?

A: The spacious sample compartment supports cuvettes with optical pathlengths ranging from 5 mm to 100 mm, allowing flexible analysis of both high-concentration and low-concentration liquid samples.