High-Precision Laboratory & Portable Water Quality Spectrophotometers

As a premier B2B optical analytical instrument manufacturer, Hangzhou Qiwei Instrument Co., Ltd. produces high-performance UV-Vis & Visible Spectrophotometers tailored for comprehensive water testing, industrial effluent analysis, environmental monitoring, and scientific research laboratories.

Engineered according to the Beer-Lambert law with low stray light monochromators and stable photodiode array sensors, our spectrophotometers provide full-wavelength scanning, high photometric accuracy, pre-installed water testing curves (COD, Ammonia, Nitrate, Heavy Metals), and GLP-compliant data processing.

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Portable Tintometer
Model: SD-2
Principle: Platinum-cobalt standard colorimetric method
Measuring Range: 0~500 PCU
Basic Error: ±5% FS
Accuracy: 0.1 PCU
Malt Color Meter
Model: PJZ-1
Principle: 90° scattered light
Minimum Indication: 0.1
Measuring Range: 0-50 EBC
Indication Error: ±2.5％ FS
Desktop Pt-Co Colorimeter
Model: BSD-50, BSD-500
Principle: Platinum-cobalt standard colorimetric method
Measuring Range: 0~50 PCU, 0~500 PCU
Basic Error: ±5% FS
Bench-top Dual-Purpose Beer Colorimeter
Model: PSD-2
Measuring Range: 0~20 EBC, 0~500 PCU
Resolution: 0.01 EBC, 0.1 PCU
Repeatability: ≤20%
Desktop Beer Colorimeter
Model: PSD-1, PSD-1+
Measuring Range: 0~9.4 EBC, 0~15 EBC
Resolution: 0.01 EBC, 0.01 EBC
Repeatability: ≤2%, ≤2%
Benchtop Colorimeter
Model: BSD-50AW, BSD-50BW, BSD-500AW, BSD-500BW
Accuracy: 1 PCU, 0.1 PCU, 1 PCU, 0.1 PCU
Calibration: 2, 3, 4, 4
Principle: Platinum-cobalt standard colorimetric method

Explore Our Spectrophotometer Series

Versatile optical solutions designed for certified testing laboratories, field monitoring, and industrial water treatment plants.

1. Laboratory UV-Vis Spectrophotometers

Full-spectrum instruments covering 190 – 1100 nm for demanding analytical labs, featuring double-beam optical design, automatic wavelength calibration, kinetic analysis, and PC software control.

Wavelength Range: 190 nm – 1100 nm
Spectral Bandwidth: 1.8 nm / 2.0 nm
Supports spectrum scanning & multi-wavelength testing

Inquire UV-Vis Models →

2. Benchtop Visible Spectrophotometers

Cost-effective, user-friendly visible photometers (320 – 1100 nm) designed for routine water colorimetry, COD, Nitrate, Phosphate, and heavy metal testing in municipal and industrial labs.

Wavelength Range: 320 nm – 1100 nm
Large LCD touchscreen display interface
Pre-programmed standard water testing curves

Get Visible Meter Specs →

3. Portable Field Spectrophotometers

Rugged, battery-powered spectrophotometric field kits equipped with waterproof carrying cases, barcode vial identification, and pre-dosed reagents for on-site environmental testing.

IP65 field-ready casing with rechargeable battery
Supports over 100 pre-installed water testing methods
Direct readouts in concentration units (mg/L, ppm)

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Critical Industrial Applications & Engineering Strengths

Where Spectrophotometers Are Deployed

Spectrophotometry is the foundational analytical method in modern water quality testing. Key application sectors include:

Environmental Inspection Stations: Surface water, groundwater, and soil leachate organic/inorganic screening
Wastewater Treatment Plants: COD, Total Nitrogen, Total Phosphorus, and Ammonia Nitrogen compliance
Municipal Drinking Water Utilities: Residual disinfectant, turbidity, and trace element analysis
Industrial Quality Control: Chemical, pharmaceutical, textile, and electroplating effluent monitoring

Qiwei Manufacturing & OEM Advantages

Empowering international laboratory equipment distributors, system integrators, and brand owners:

Superior Optical Hardware: Blazed holographic gratings and silicon photodiodes ensure high wavelength accuracy ($\pm 0.5\,nm$)
Built-in Water Quality Curves: Open-method architecture allows users to edit or save custom calibration curves
OEM & ODM Customization: Logo printing, custom chassis designs, localized UI software, and custom cuvette cell holders
Internal Links: Combine with our Nickel Testers, Urea Meters, Manganese Meters, and Sulfuric Acid Meters for complete water analysis solutions.

Frequently Asked Questions (Spectrophotometer Sourcing Guide)

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

A Visible Spectrophotometer covers 320 nm – 1100 nm (visible spectrum), ideal for colorimetric water tests. A UV-Vis Spectrophotometer extends from 190 nm – 1100 nm, incorporating deuterium lamps to measure organic compounds (such as UV254 or nitrates) in the ultraviolet region.

Q2: Can Qiwei spectrophotometers fit standard 10mm, 20mm, or 50mm cuvettes?

Yes, our benchtop models feature flexible multi-cell holders accepting 10mm, 20mm, 30mm, 50mm, and 100mm optical glass or quartz cuvettes, enabling trace level detection in low-concentration samples.

Q3: Do you support OEM custom software and distributor volume pricing?

Yes, as a direct factory manufacturer, we provide complete OEM/ODM services including customized software UI, branded outer casings, multilanguage firmware, and tiered volume pricing for lab suppliers.

Require Factory Direct Pricing or Custom Spectrophotometer Solutions?

Get in touch with Hangzhou Qiwei Instrument today for technical consultation, optical configuration options, and competitive distributor pricing within 24 hours.

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Hangzhou Qiwei Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of spectrophotometer in China, featured by quality products and good service. Please rest assured to buy bulk durable spectrophotometer in stock here from our factory. We also accept customized orders.

Desktop Beer Colorimeter, Malt Color Meter, Portable Tintometer