Interfacial Tensiometer

I. Instrument Introduction

This instrument is a dedicated testing device for determining surface tension, interfacial tension and liquid density. It strictly complies with the requirements of multiple national and international standards and can be widely used for testing related indicators of petroleum products, surfactants, natural latex and various other samples. Specific applicable standards include GB 6541-1986 "Petroleum products - Determination of interfacial tension of oil against water" (ring method), GB/T 22237-2008 "Surface active agents - Determination of surface tension", GB 18396-2001 "Natural latex - Determination of surface tension by the ring method", and ISO 6295-1983 "Petroleum products - Mineral lubricating oils - Determination of interfacial tension of oil against water" (ring method).

II. Instrument Principle

The core of this instrument adopts two classic measurement principles: the platinum ring method and the platinum plate method. Based on the mechanical measurement of surface tension, it captures the tension signal when the platinum ring or platinum plate contacts the sample liquid surface through a high-precision sensor, and converts it into surface/interfacial tension values through precise system calculation. Liquid density measurement adopts high-precision density sensing technology combined with a constant temperature control module to ensure density measurement accuracy. The constant temperature device maintains the temperature required for sample testing stably through a closed-loop temperature control system, providing a stable environment for testing various indicators and guaranteeing the reliability and repeatability of measurement data.

III. Instrument Features

1. Operation screen: equipped with a 10-inch large touchscreen, convenient to operate with an intuitive interface.

2. Supports 2 measurement methods: the platinum ring method and platinum plate method can be selected arbitrarily.

3. Can simultaneously measure surface/interfacial tension and density: integrates two measurement functions without additional equipment.

4. Fully automatic measurement with automatic lifting: the sample stage lifts automatically, with the whole process fully automatic and without manual intervention.

5. Built-in printer: built-in thermal printer automatically prints measurement results.

6. Large data storage: built-in large-capacity storage for long-term retention of large amounts of measurement data.

7. Built-in constant temperature device: high-precision constant temperature module precisely controls sample temperature.

IV. Technical Parameters