How to use a viscosity cup without handle?

1. According to the fixed volume method: choose a cup with a flow time of 20-200 seconds.

According to the flow stop method: choose a cup with a flow time of 30-300 seconds.

2. Bring the section and sample to the required temperature.

If this is not possible, it is recommended to use the viscosity / temperature calculator.

Ideally, use a thermostatted cutting stand and make sure it is level.

3. Close the opening with your finger.

4. Fill the cup to the brim. The sample should be free of bubbles or any other impurity.

5. Push a glass plate over the cup to drain excess liquid into the outer rim and close the cup.

6. Place a container (or a graduated beaker in the case of the fixed volume method) under the cup.

7. Clear the hole and place the cup on the level stand.

8. Remove the glass plate and start the stopwatch simultaneously.

9. According to the flow stop method: When the product flow becomes discontinuous (droplets), stop the stopwatch and read the flow time.

According to the fixed volume method: Stop the stopwatch when 50 ml has flowed into the beaker and read the flow time.

10. Carry out the measurement 3 times with a new sample of the same liquid. The average of these 3 tests gives the flow time.

How to use a viscosity cup with handle?

1. Bring the sample to the required temperature.

2. Gently and completely immerse the viscosity cup in the liquid, up to half a centimeter above the upper edge of the container, then quickly remove it by simultaneously starting the stopwatch. Do not wait until the liquid has reached the edge.

3. Stop the stopwatch when the stream of liquid exiting the orifice becomes discontinuous or, for the LORY LCH cup, when the tip emerges.

4. To evaluate the results, carry out the measurement 3 times with a new sample of the same liquid.

5. The average of these 3 tests is defined as the flow time.

How to convert flow time to viscosity in cSt?

Time-viscosity conversion of ISO 2431 cuts

As a reminder, ISO 2431 cuts also comply with NF T 30 070, DIN 53224, BS 3900

The conversion between flow time and viscosity is calculated from the following equations:

viscosity = K * flow time - C / flow time

or

flow time = (viscosity + root (viscosity² + 4 * K * C) / 2K

The K and C parameters for ISO 2431 sections are detailed in the following table:

FORD Cup Time-Viscosity Conversion (ASTM D1200)

The conversion between flow time and viscosity is calculated from the following equations:

viscosity = K * flow time - C / flow time

or

flow time = (viscosity + root (viscosity² + 4 * K * C) / 2K

The K and C parameters for FORD cuts (ASTM D1200) are detailed in the following table:

Time-viscosity conversion of FRICKMAR / DIN 53211 cuts

The conversion between flow time and viscosity is calculated from the following equations:

viscosity = K * flow time - C / flow time

or

flow time = (viscosity + root (viscosity² + 4 * K * C) / 2K

The K and C parameters for FRICKMAR cuts (DIN 53211) are detailed in the following table:

Zahn Cup Time-Viscosity Conversion

As a reminder, Zahn cuts comply with ASTM D4212 and ASTM D1084

The conversion between flow time and viscosity is calculated from the following equations:

viscosity = K * flow time - C / flow time

or

flow time = (viscosity + root (viscosity² + 4 * K * C) / 2K

The K and C parameters for Zahn cuts are detailed in the following table:

Time-viscosity conversion of AFNOR 4 mm sections

The conversion between flow time and viscosity is calculated from the following equations:

viscosity = 3.7509 * flow time -25.226

or

flow time = (viscosity + 25.226) / 3.7509

ISO / AFNOR / DIN / FORD / ZAHN AND FRICKMAR cup viscosity ranges