The flame photometers from A.Krüss are used to determine the concentration of alkali and alkaline earth elements in aqueous solutions and are a simple and particularly cost-effective alternative to analysis techniques such as ICP or AAS
Technologically groundbreaking, fast, powerful, highly accurate and with A.KRÜSS all-round service. Atomic emission spectrophotometry for determining the concentration of liquids – with high-quality new software and hardware, 2 times faster CPU and 24/7 measuring operation – delivers a measurement result accurate to 8 digits in 30 seconds and meets all important industry standards.
Simultaneous measurements of sodium, potassium, calcium and lithium are possible with a detection limit of 0.01 mg/l. Our instruments offer sample throughput of up to 120 measurements per hour and have the option of fully automatic 24 H measurement operation. With costs of only 1 cent per measurement, the FP-8000 series is the most economical measurement method for alkali and alkaline earth metals.
Fully automatic measurement and sample preparation
A measurement with atomic emission spectroscopy AES is already possible with a sample volume of only 1 ml. The analysis substance is taken from the autosampler by a high-precision dosing unit and transferred to one of the 2 mixing chambers. There, the substance is automatically diluted to the required concentration by adding an aqueous standby solution.
Highly accurate measurements thanks to ideal sample, gas and air mixture
With the aid of the Venturi effect, the analysis substance is sucked into the atomiser as an aqueous solution and atomised extremely finely. Drops that are too large are collected in the atomiser chamber and discharged past a drop sensor. The monitoring of the reject serves as a control parameter with which the sample flow and atomisation can be optimally adjusted. The finely atomised sample is mixed with the fuel gas in the gas mixing chamber to create an ideal sample, gas and air mixture
Stable measured values through a defined flame shape
To achieve stable measured values, the flame must burn very evenly. 12 gas outlets model a flame shape optimised for AES measurement. Propane or acetylene can be used as fuel gas. Air currents stabilise these and ensure a constant flame pattern, which is additionally protected by a glass cylinder.
Highly sensitive photosensors for high-precision concentration determinations
The elements to be measured, such as sodium, potassium, calcium and lithium, emit light with a characteristic wavelength due to thermal excitation. The different wavelengths are detected by high-precision photosensors. Up to 5 different elements can be measured simultaneously. Alternatively, different concentration ranges of the same element can be detected.
Safety thanks to efficient cooling and monitoring
To increase safety for the user, an integrated cooling air flow reduces the hot exhaust air to below 50 °C. In addition, our unit continuously monitors the flame. In case of irregularities, the safety valves are closed automatically.
A.KRÜSS devices are used successfully by well-known companies worldwide.