The Labmart LMDV300H Digital Viscometer with Thermosel System is designed for viscosity measurement of materials that are solid at room temperature and become liquid when heated. It provides viscosity measurement up to 10,000,000 mPa·s, with temperature control from RT +5°C to 300°C, a 10–20 mL sample capacity, selectable speed and RS232C output.

3. Detailed Product Description

Product Overview

The LMDV300H Digital Viscometer with Thermosel System combines a digital rotational viscometer with a high-temperature Thermosel system for viscosity testing of materials that require heating before measurement.

According to the supplied 2025–26 catalogue, the system is mainly intended for substances that are solid at room temperature and become liquid after heating at high temperature, with examples including asphalt, hot melt adhesive and polyethylene wax.

The LMDV300H has a viscosity measuring range of 50 to 10,000,000 mPa·s, a speed range of 0.1–200 rpm, and a sample capacity of 10–20 mL. Its Thermosel system provides temperature control from RT +5°C to 300°C, with a specified temperature accuracy of ±0.1°C.

The viscometer features an LCD display, while the Thermosel system incorporates an LED display. The instrument directly displays viscosity, speed, percent torque, spindle number and temperature.

Key Features and Benefits

• Digital viscometer with integrated Thermosel system
• Designed for high-temperature viscosity applications up to 300°C
• Measuring range of 50–10,000,000 mPa·s
• 0.1–200 rpm selectable speed
• 10–20 mL sample capacity
• Temperature control from RT +5°C to 300°C
• Temperature accuracy of ±0.1°C
• LCD display for viscometer
• LED display for Thermosel system
• Temperature controller with set-temperature and real-temperature display
• Direct display of viscosity, speed, percent torque, spindle number and temperature
• RS232C interface
• Four spindle configuration: #21, #27, #28 and #29
• Insulated sample chamber
• Small sample volume requirement
• Supplied heating furnace and temperature controller

4. Technical Specifications

The above specifications are taken directly from the LMDV300H specification table in the supplied catalogue.

Spindle Measurement Ranges

The catalogue defines K = 1,000 mPa·s and M = 1,000,000 mPa·s.

5. Applications

The catalogue specifically identifies the LMDV300H for substances that are solid at room temperature and become liquid after heating at high temperature.

Applications/examples specified in the catalogue include:

• Asphalt
• Hot Melt Adhesive
• Polyethylene Wax
• High-temperature viscosity testing
• Heated-material viscosity measurement
• Materials requiring controlled-temperature viscosity testing

6. Suitable For

• Asphalt testing laboratories
• Hot melt adhesive testing
• Polyethylene wax testing
• Research laboratories working with heat-softening materials
• Quality-control laboratories
• R&D laboratories
• Laboratories requiring high-temperature viscosity measurement
• Laboratories working with materials that are solid at room temperature and liquid after heating

7. FAQs

1. What is the LMDV300H?

The LMDV300H is a Digital Viscometer with Thermosel System designed for viscosity measurement under controlled high-temperature conditions.

2. What is the viscosity measuring range?

The specified measuring range is 50–10,000,000 mPa·s.

3. What is the maximum temperature of the Thermosel system?

The temperature control range extends to 300°C.

4. What is the temperature accuracy?

The catalogue specifies ±0.1°C temperature accuracy.

5. What sample volume can the LMDV300H accommodate?

The specified sample capacity is 10–20 mL.

6. What is the speed range?

The specified speed range is 0.1–200 rpm.

7. How many spindles are included?

The LMDV300H is specified with four spindles: #21, #27, #28 and #29.

8. What is the measurement range of the #21 spindle?

The #21 spindle has a specified range of 50–500K mPa·s.

9. What is the measurement range of the #27 spindle?

The #27 spindle has a specified range of 250–2.5K mPa·s.

10. What is the measurement range of the #28 spindle?

The #28 spindle has a specified range of 500–5M mPa·s.

11. What is the measurement range of the #29 spindle?

The #29 rotor spindle has a specified range of 1K–10M mPa·s.

12. What materials is the LMDV300H intended for?

The catalogue specifically mentions materials that are solid at room temperature and become liquid after heating, including asphalt, hot melt adhesive and polyethylene wax.

13. What parameters can be displayed?

The catalogue states that the system directly displays viscosity, speed, percent torque, spindle number and temperature.

14. Does the LMDV300H have computer/output connectivity?

Yes. The specified output is an RS232C Interface.

15. What is the power supply?

The catalogue specifies an adaptor using AC 220V / 50Hz.

16. What is the gross weight?

The gross weight of the main instrument + Thermosel is specified as 14 kg (9 kg + 5 kg).