Automatic concentration detector (UV xenon lamp + UV spectrometer + probe)

It can detect the concentration of liquids such as magnesium ions, potassium ions, sodium ions, chloride ions, 200-1100 spectrum range, and uses 180-480 for UV enhanced spectrometer

Fully automatic concentration analysis, support self-learning, support self-built concentration gradient curve

It combines CMOS UV spectrometer and xenon light source to achieve a cost-effective solution.

CMOS UV spectrometer

Combined xenon light source

CMOS detector from JPN

Hardware from USA/Germany

1. Integrated UV spectrometer system, which provides a complete solution, combining CMOS spectrometer with xenon lamp, convenient for users to measure

2. Stable UV measurement, high-performance xenon flash lamp, especially in the UV region, makes its measurement stable

3. Low cost, the whole integrated system reduces complexity, is a complete UV measurement solution.

UVS3 series highlights

CMOS detector performs well in UV ultraviolet segment

High sensitivity in UV region wavelength range 180-500nm, 200-400nm

Signal-to-noise ratio 800:1 *snr=(signal-noise)/deviation

Integrated xenon light source

Reduce system complexity

Cost-effective UV spectroscopy system

Supports extended SDK and secondary development

SMA905 optical interface

Complete UVS3 system measurement accessories, such as flow cell

USB interface

We also provide OEM module

Application

UV spectrophotometer

UV spectrum measurement

UV spectrometer

UV absorption spectroscopy

UV absorbance, absorbance measurement

Transmittance, transmittance coefficient measurement

Water quality, total nitrogen measurement

Absorbance calculation, concentration calculation

Using Lambert-Beer's law, the concentration or content of the liquid can be calculated

Protein concentration measurement

Quantification Analysis and measurement

Application example 1: UV absorption, concentration analysis

Test steps

Put a reference sample in the cuvette. The reference sample can be water or nothing. If nothing is put, it is the reference air. The cuvette must be a quartz cuvette because quartz cuvettes have less interference with the UV spectrum than plastic cuvettes

Put the cuvette in the cuvette holder, the software controls the xenon lamp to turn off, and collect the electronic noise of the spectral equipment

The software controls the xenon lamp to turn on and collect the spectrum of the reference signal

Put the liquid to be measured, such as protein, or the liquid to be measured in the cuvette

The software controls the xenon lamp to turn on and collect the spectrum of the measured object. The absorbance of the liquid relative to water A = - log10 (transmittance value)

According to the Lambert-Beer law, we can deduce the concentration of the liquid

Mathematical expression of the Beer-Lambert law

A=-log10(T transmittance)=Kbc

A is absorbance, T is transmittance, It is the ratio of the intensity of the outgoing light (I) to the intensity of the incident light (I0).

K is the molar absorption coefficient. It is related to the properties of the absorbing substance and the wavelength λ of the incident light.

c is the concentration of the absorbing substance, in mol/L, and b is the thickness of the absorbing layer, in. [b is often replaced by L, with the same meaning]

Note: Absorbance has no unit. It is a ratio, which is the light intensity measured without liquid divided by the light intensity measured after adding liquid

From the Beer-Lambert law, it is not difficult to find that if the liquid concentration is very low, then the absorbance value will be very high. Ordinary detection instruments have a detection range, that is, a range ratio between the maximum light intensity and the minimum light intensity (we call it dynamic range). Ordinary spectrophotometers generally can only reach 100 times the ratio of the strongest light to the weakest light, that is, the absorbance value is 2 = -log(0.01) Our SPM series spectrometers can achieve an absorbance of 3, which is 1000 times higher. Compared with traditional UV spectrophotometers, SPM spectrometers have a large dynamic range, which means that our ability to detect weak light is much stronger than ordinary spectrophotometers. This is conducive to the detection of low-concentration liquids. We can use a small amount of liquid and dilute it for measurement. This can save expensive liquid costs.