QiWei WFH-204BS Portable UV Analyzer 254nm & 365nm Malaysia
# QiWei WFH-204BS Portable UV Analyzer 254nm & 365nm Malaysia
The **QiWei WFH-204BS Portable UV Analyzer** is a dual-wavelength ultraviolet analyzer designed for laboratory, pharmaceutical, research and industrial inspection applications.
It provides both **254nm short-wave UV and 365nm long-wave UV**, allowing users to examine fluorescent materials and samples under different ultraviolet wavelengths.
For laboratories in Malaysia looking for a simple and portable UV analysis instrument, the **QiWei WFH-204BS** provides a practical alternative to larger dark-box UV analyzers.
## Why Choose the QiWei WFH-204BS?
The main advantage of the QiWei WFH-204BS is its combination of **two UV wavelengths in one portable instrument**.
It is suitable for users who need:
254nm short-wave ultraviolet light
365nm long-wave ultraviolet light
Portable sample inspection
Laboratory fluorescence observation
TLC and chromatography inspection
Simple operation without a large UV viewing cabinet
The 254nm and 365nm UV sources can be operated according to the required inspection application.
## 254nm & 365nm Dual-Wavelength UV Analysis
Different substances can produce different fluorescence responses depending on the ultraviolet wavelength used.
### 254nm UV
**254nm is a short-wave ultraviolet wavelength.**
It is commonly used for laboratory applications where short-wave UV excitation is required, including chromatography-related observation and fluorescent sample examination.
### 365nm UV
**365nm is a long-wave ultraviolet wavelength.**
It is widely used for fluorescence observation and inspection of materials that become visible or produce stronger fluorescence under long-wave UV.
Having both wavelengths available makes the **QiWei WFH-204BS** more versatile than a single-wavelength UV lamp.
## Typical Applications
The QiWei WFH-204BS can be considered for:
Thin Layer Chromatography (TLC)
Paper chromatography
Pharmaceutical laboratories
Chemical laboratories
Fluorescence observation
Research laboratories
University laboratories
Dye and coating inspection
Rubber material inspection
Petroleum-related testing
Textile and fibre examination
Food-related laboratory screening
QA/QC inspection
## QiWei WFH-204BS Specifications
**Brand:** QiWei
**Model:** WFH-204BS
**Product:** Portable UV Analyzer
**UV Wavelengths:** 254nm and 365nm
**Filter Size:** 50 × 150mm
**Power Supply:** AC 220V ±10%, 50Hz
**Instrument Weight:** Approximately 1.4kg
The portable configuration makes the WFH-204BS convenient for routine laboratory inspection where a full dark-box UV analyzer may not be necessary.
## QiWei WFH-204BS vs Single-Wavelength UV Lamp
A single-wavelength UV lamp may be sufficient when the testing method always requires the same wavelength.
However, laboratories working with different samples may need both short-wave and long-wave UV.
The **QiWei WFH-204BS combines 254nm and 365nm in one instrument**, reducing the need to purchase separate UV lamps for different inspection requirements.
## QiWei WFH-204BS vs Dark-Box UV Analyzer
A dark-box UV analyzer provides an enclosed observation environment and can be useful when ambient light needs to be controlled.
The **QiWei WFH-204BS focuses on portability and convenient operation**.
Choose the WFH-204BS when:
Portability is important
Samples need to be checked at different work areas
A compact instrument is preferred
Routine UV fluorescence observation is required
Consider a dark-box UV analyzer when:
A controlled dark viewing environment is important
Samples are routinely examined inside an enclosed chamber
The laboratory prefers a fixed benchtop setup
## Is the QiWei WFH-204BS Suitable for TLC?
The WFH-204BS can be used for **Thin Layer Chromatography (TLC) observation** when the analytical method requires 254nm or 365nm ultraviolet illumination.
The appropriate wavelength depends on the TLC plate, fluorescent indicator and compounds being examined.
For this reason, having both **254nm and 365nm** available gives laboratories greater flexibility.
## Who Should Consider This UV Analyzer?
The QiWei WFH-204BS is particularly relevant for:
**Pharmaceutical laboratories**
For chromatography and fluorescence-related sample examination.
**Universities and research institutes**
For laboratory experiments, teaching and research applications.
**Chemical laboratories**
For fluorescence observation and material examination.
**Industrial QA/QC departments**
For applications involving fluorescent materials, dyes, coatings, fibres and other suitable samples.
**Food-related laboratories**
For applicable fluorescence screening and laboratory examination methods.
## Looking for QiWei WFH-204BS in Malaysia?
MTM Precision supplies the **QiWei WFH-204BS Portable UV Analyzer** for laboratory and industrial users in Malaysia.
If you are unsure whether you need **254nm, 365nm or both wavelengths**, contact us with your sample and application requirements.
We can also assist customers in comparing portable UV analyzers with dark-box UV analyzer configurations.
**Contact MTM Precision Sdn. Bhd.**
Showroom & Service Centre:
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong,
Selangor, Malaysia.
Contact MTM Precision for **QiWei WFH-204BS availability, quotation and technical assistance in Malaysia**.
15 Sep 2026
