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Chapter 3 EXPERIMENTAL PROCEDURE AND SETUP USED FOR HIGH SPEED IMAGING ANALYSIS 3.1 High speed image analysis of fluid in a micro channel This section describes the experimental procedure and results of high speed imaging and analysis of fluid flowing in micro channels. There were different kinds of presses used to manufacture the micro channels those include Ballistic press, hydraulic press, Laser press, Rotary and Stamped press, all these presses were tested with water based dye and whole milk to analyze the flow duration and flow pattern in the micro channel. The experimental setup and procedure is described in the next section. 3.2 Experimental setup High speed digital camera is used to capture the video of the fluid flowing through the micro channel, the high speed digital camera is a Casio-Exilim FH25, this camera shoots high speed video at 1000 frames per second. The camera has different settings to capture images at different speeds 240fps, 420fps and 1000 fps. This experiment is conducted with videos being recorded at 420fps. The resolution of the video (224x168) shot at 420fps. There are two types of presses which are used in this experiment one is a single channel press and the other is a 3 channel press, the image of the channels are as shown in the images below. 55