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The Drop Shape Analyzer

The Krüss DSA 100S Drop Shape Analyzer will analyze the shape a drop of liquid on a surface, or suspended from a needle, in order to calculate the contact angle, or the surface tension, respectively. It is mostly used to determine the contact angle of water as a measure of the hydrophobicity/hydrophility of the sample surface.

The user manual, user APV(s), technical information, and contact information can be found in LabManager:

Drop Shape Analyzer in LabManager

An overview of the performance of the Drop Shape Analyzer

Purpose	Imaging and analysis of of the shape of the interface between liquid and air	Measurement of contact angle between sample surface and liquid Measurement of surface tension of liquid
Performance	Measurement accuracy	Highly dependent on analysis conditions (image quality and fitting model); usually around ±0.5°. Using several measurement points is recommended.
Process parameters	Available liquids	Syringe 1: Water (H2O) Syringe 2: Diiodo-methane (I2CH2) Syringe 3: Benzyl alcohol (C6H5CH2OH) Syringe 4: Available Manual dispense is also possible
Sample requirements	Substrate material allowed	In principle all materials
	Substrate size	Up to 6" wafers. In order to measure a few square mm's of flat surface is required.
	Batch size	One sample at a time

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	[http://labmanager.danchip.dtu.dk/function.php?module=Machine&view=view&mach=240 Drop Shape Analyzer in LabManager]		[http://labmanager.danchip.dtu.dk/function.php?module=Machine&view=view&mach=240 Drop Shape Analyzer in LabManager]