Fbh604 thermostatic bath

Manufactured by Thermo Fisher Scientific

Sourced in Germany

The FBH604 thermostatic bath is a laboratory equipment designed to maintain a constant temperature within a specified range. The device circulates liquid to ensure uniform temperature distribution throughout the bath.

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Lab products found in correlation

Dsa100 analyzer, by Krüss (1 mentions) Drop shape analysis system dsa100, by Krüss (1 mentions) Drop shape analysis system dsa100e, by Krüss (1 mentions)

3 protocols using fbh604 thermostatic bath

Surface Tension and Contact Angle Measurement

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Surface tension
and contact angle
measurements were performed with a DSA 100 analyzer (Krüss,
Germany, accuracy ±0.01 mN m^–1), at 25 °C.
The shape drop method was utilized to determined surface tension.
The principle of this method is based on the formation of an axisymmetric
drop at the tip of a needle of a syringe, and the image of the drop
(3 cm³) is taken with a CCD camera and digitized. The surface
tension (γ in mN m^–1) of the spray solutions
used in the greenhouse experiments was calculated by analyzing the
profile of the drop according to the Laplace equation. The temperature
during the experiment was controlled using a Fisherbrand FBH604 thermostatic
bath (Fisher, Germany, accuracy +0.1 °C).

Niemczak M., Sobiech Ł, & Grzanka M. (2020). Iodosulfuron-Methyl-Based Herbicidal Ionic Liquids Comprising Alkyl Betainate Cation as Novel Active Ingredients with Reduced Environmental Impact and Excellent Efficacy. Journal of Agricultural and Food Chemistry, 68(47), 13661-13671.

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Surface Tension Measurement by Pendant Drop

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The surface tension was determined using the pendant drop method. The measurements were carried out by the use of a Drop Shape Analysis System DSA100 (Krüss GmbH, Germany, accuracy ±0.01 mN m⁻¹), at 25 °C. The temperature was controlled using a Fisherbrand FBH604 thermostatic bath (Fisher, Germany, accuracy ±0.1 °C). The pendant drop method is a widely used technique to measure the surface tension between gas–liquid and liquid–liquid interfaces. We have obtained the values of the surface tension by fitting the Young–Laplace equation to a shape of the drop captured by a digital camera suspended at the end of a capillary tube. The detection of a drop edge from the digital image yielded in a set of geometrical points describing the shape. The Young–Laplace equation for an axisymmetric interface was solved for given initial parameters; then the best fit was obtained by minimizing a summation of the squared distances between the experimental points and the theoretical drop profile.^{30 (link)}

Szutkowski K., Kołodziejska Ż., Pietralik Z., Zhukov I., Skrzypczak A., Materna K, & Kozak M. (2018). Clear distinction between CAC and CMC revealed by high-resolution NMR diffusometry for a series of bis-imidazolium gemini surfactants in aqueous solutions. RSC Advances, 8(67), 38470-38482.

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Surface Tension and Contact Angle Measurement

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Surface tension and CA measurements were carried out by the use of a Drop Shape Analysis System DSA100E (KRÜSS GmbH, Germany, accuracy ±0.01 mN m⁻¹), at 25 °C. Temperature was controlled using a Fisherbrand FBH604 thermostatic bath (Fisher, Germany, accuracy ±0.1 °C). The surface tension was determined using the pendant drop method. This method consists of fitting the Young–Laplace equation to the digitized shape of a drop suspended from the end of a capillary tube. The image of the drop (6 μL) was taken from a charge coupled device (CCD) camera. The values of the critical micelle concentration (CMC) and the surface tension at the CMC (γCMC) were determined from the intersection of the two straight lines drawn in low and high concentration regions in surface tension curves (γ vs log C curves) using a linear regression analysis method.
The CA was measured using the sessile drop method (Young–Laplace), i.e. drop of liquid was deposited on a solid surface (paraffin). The drop was produced before the measurement and had a constant volume during the measurement. In this method the complete drop contour was evaluated. After the successful fitting of the Young–Laplace equation the CA was determined as the slope of the contour line at the 3-phase contact point.

Ławniczak Ł., Materna K., Framski G., Szulc A, & Syguda A. (2015). Comparative study on the biodegradability of morpholinium herbicidal ionic liquids. Biodegradation, 26(4), 327-340.

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