Handheld Rheometer
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Handheld Viscometer
Handheld Rotational Viscometer
Handheld Spindle Viscometer
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Expert Mobile Viscometer
Professional Viscosity Measurement
ASTM D1084 ASTM D1824 ASTM D2196
ASTM D2197 ASTM D4400 ISO 2555
ISO 2884‑1/2 ISO 3219 DIN 53019

Handheld Viscometer QPI‑HRV1800 - Features:

1. Purpose of the Test

The procedure determines the viscosity of paints, coatings, and similar liquid materials using the handheld viscometer QPI‑HRV1800. The instrument evaluates the resistance of the sample to rotational movement and converts this resistance into dynamic viscosity (dPa·s) depending on the selected mode.

2. Equipment and Preparation

• Handheld Viscometer QPI‑HRV1800 with rotor installed

• Clean sample container (flat-bottom, compatible diameter)

• Conditioned sample at the required test temperature

• Lint‑free wipes for cleaning the rotor

• Calibration reference fluid (optional for verification)

Before testing:

• Ensure the rotor is clean and free of dried coating.

• Verify the battery level or connect external power.

• Allow the sample to reach the specified temperature (typically 25 ± 0.5 °C unless otherwise required).

• Gently stir the sample to remove gradients without introducing air bubbles.

3. Instrument Setup

1. Power on the QPI‑HRV1800.

2. Select the measurement mode on the display.

3. Confirm the correct rotor number is shown.

4. Zero the instrument if prompted.

5. Hold the viscometer vertically above the sample container.

The device automatically stabilizes its internal reference before measurement.

4. Test Procedure

Step 1 — Immerse the Rotor

Lower the rotor into the sample until the immersion mark is fully submerged. Avoid touching the container walls to prevent mechanical interference.

Step 2 — Start the Measurement

Press START. The QPI‑HRV1800 begins rotating the rotor at the controlled speed defined by the Stormer method.

Step 3 — Stabilization Phase

The instrument measures:

• torque resistance

• rotational drag

• dynamic load on the rotor

The microcontroller filters noise and stabilizes the reading. The stabilization typically takes 5 - 10 seconds depending on sample viscosity.

Step 4 — Reading the Result

Once stable, the display shows:

• Viscosity value

• Rotor number

• Temperature (if the model includes the sensor)

Record the viscosity value as the primary result for ASTM‑style reporting.

Step 5 — End the Test

Lift the instrument straight upward to avoid splashing. Press STOP. Clean the rotor immediately using a lint‑free wipe and appropriate solvent.

5. Calculations and Reporting

The QPI‑HRV1800 performs all conversions internally. For ASTM‑style documentation, report:

• Sample identification

• Test temperature

• Rotor number

• Sample viscosity in dPa·s

• Any deviations from standard conditions

6. Quality Control Notes

• Ensure the sample is homogeneous and bubble‑free.

• Re‑measure if the reading fluctuates more than ±0.2.

• Verify calibration weekly using reference fluids.

• Maintain consistent container geometry for repeatability.

7. Safety and Handling

Use gloves and eye protection when working with solvent‑based coatings. Dispose of cleaning solvents according to local regulations.