Turbidimeter and Precautions

Turbidimeter A laboratory instrument used to measure the turbidity of liquids or solids. Here is how to use a turbidimeter:

1. First, clean the test tube according to the regulations, use filter paper to dry the water droplets in the test tube, then insert the turbidimeter into the test tube and let its protective tube rise to the specified position.

2. Then, adjust the preset device so that the light shines on the frosted glass sheet through various parts. The light must be perpendicular to the sample when irradiating, and the beam must not be blocked by obstacles. At the same time, let the lens and the standard light tube in the nephelometer come into contact with the standard paper surface, and add a slight obstruction in the light path.

3. Then, observe the light and dark image from the back of the magnifying glass. Observe through the eyepiece whether the dividing line between light and dark is clearly distinguishable. If it is not clear, adjust the aperture appropriately.

4. Then, rotate the fine-tuning screw to make the lens contact the standard paper surface, and then rotate the fine-tuning screw to make the dividing line between light and dark clear.

5. Then, turn the fine-tuning spiral to make the dividing line between light and dark clear.

6. Finally, compare the measured standard value with the actual need for the concentration and make corrections or corrections.

It should be noted that the measurement principle of the turbidimeter is to measure turbidity by using the degree of light absorption of the turbidity generated when light passes through the solution of the substance to be measured. When the measured substance is a gas, the measured value is called a transmission nephelometer (also called a transmission nephelometer). A turbidimeter is an instrument that analyzes the particle size and uniformity of substances.

When using a turbidimeter, you should pay attention to the following points:

1. Before measurement, adjust the zero point of the turbidimeter to the "0" position, and then perform the measurement.

2. When measuring different samples, filter paper and turbidimeter should be used instead.

3. The height of the sample layer must be measured strictly in accordance with the height requirements in the instructions.

4. Store at 45°C. When ice appears in the transparent plastic bag in the turbidimeter, it cannot be used anymore. It should be moved to room temperature for 7 to 8 hours to thaw before use.

5. Except for hygroscopic agents, they should be replaced regularly to facilitate detection.

6. Pay attention to prevent the turbidimeter from being shaken.

7. When using the turbidimeter, follow the operating steps in the instruction manual.