Experiment 2. Determination of water transparency. 2.1 Take a transparent test tube, pour the studied water into it. 2.2 Place a font at a distance of 4 cm from its bottom under the test tube. 2.3 Pour out the water until this font is no longer visible from above through the layer of water. 2.4 Measure the height of the remaining water column with a ruler and express the degree of transparency in cm. 2.5 Conclusion: water transparency – cm. What is the transparency of the water? (use the table "Water Transparency") Transparency Unit of measurement, cm Transparent More than 30 Slightly cloudy From 25 to 30 Moderately cloudy From 20 to 25 Cloudy From 10 to 20 Very cloudy Less than 10