Effective water quality control with filter photometers

Filter photometer: Design and mode of operation

A filter photometer is an optical measuring instrument for routine analysis used to determine the concentration of substances in a solution. The construction of the instrument consists of a light source, a monochromator and a detector.

The light source generates radiation with a broad spectrum, which is passed through the monochromator. The monochromator separates the light spectrum into individual wavelengths and allows only one specific wavelength to pass through. This monochromatic light then hits the sample. Depending on the concentration of the substance to be measured, it absorbs part of the incident light.

The remaining intensity of the transmitted monochromatic beam is measured by the detector and output as an electronic signal. To determine the concentration of the substance, a calibration curve must first be created: Here, one measures the ratio between absorbed and irradiated intensity (absorption behavior) at various known concentrations. From this curve, it is then possible to read off the concentration of each unknown sample.

Filter photometers are very precise measuring instruments with high sensitivity to the slightest changes in the absorption behavior of samples - therefore they are often used in laboratory or industrial environments for quality control or analysis of various materials such as water samples or food ingredients.

Calibrating a filter photometer: this is how it's done

To calibrate a filter photometer, a few steps are necessary. First, make sure that the instrument is in a clean and stable condition. This includes cleaning the measuring cell as well as the filter.

• Next, a reference sample must be measured. This is a solution with a known concentration of the analyte that is to be measured later. The measured values of this sample serve as the basis for the calibration curve.
• Several standards containing different concentrations of the analyte should then be prepared. These can then be measured one after the other and, together with the reference sample, form the basis for the calibration curve.
• The curve obtained can now be used to analyze unknown samples and determine their concentration.
• When calibrating a filter photometer, it is also important to regularly check for accuracy and reproducibility by performing control measurements of standard solutions or interlaboratory tests with other laboratories.

These careful measures ensure that the result of an analysis is as accurate as possible and can therefore provide meaningful data.

Discover quality filter photometers from top brands at MedSolut

If you are looking for high-quality filter photometers, then you should definitely take a look at MedSolut's extensive range. Here you will find a large selection of devices from well-known manufacturers such as WTW or MACHEREY-NAGEL. Filter photometers are mainly used in water analysis and enable the precise measurement of various parameters such as the pH value or the concentration of certain substances.

To do this, they work with special optical filters that transmit or block the light depending on the wavelength. At MedSolut, you can choose from various models - from simple handheld devices to fully automated systems for use in the laboratory.

All devices are characterized by their high measurement accuracy and reliability as well as their ease of operation and maintenance. Convince yourself of the quality of our products now! Visit our online store or ask for personal advice - we will be pleased to help you!

We support you in finding the right filter photometer for your laboratory

Our extensive range of high-quality filter photometers allows you to find the perfect instrument for your specific requirements. Whether you need a simple photometer for use in the field or are looking for a complex system to analyze samples in your lab, we have the solution. Our filter photometers are known for their high quality and reliability.

We only work with reputable manufacturers to ensure that each instrument meets our high standards. Furthermore, we offer a wide range of accessories to ensure that you are always optimally equipped. Contact us today!

Our experienced experts are available to help you select the right filter spectrophotometer for your laboratory needs. You can reach us around the clock by phone at +49 30 209 657 900 or by email at info@medsolut.com.