吉田科学器械 List of Products and Services

The "QS Series" is an automatic combustion tube sulfur content tester that introduces air into a quartz combustion tube heated to 950–1100°C to combust the sample. The generated sulfur oxides are absorbed in hydrogen peroxide (3%) to form sulfuric acid, which is then neutralized and titrated with sodium hydroxide standard solution to determine the sulfur content. This device automatically performs the combustion process of the sample. 【Features】 ■ Two models: QS-AC1 type (single combustion tube holder) and QS-AC2 type (dual combustion tube holder) ■ The fixed furnace maintains a constant testing temperature, allowing for repeated tests ■ The movable furnace is a quick-cooling split type, enabling the starting temperature to be adjusted based on the sample, accommodating various samples ■ The combustion process is automated, allowing for evaporation combustion without igniting the sample ■ The combustion speed in the combustion section can be manually adjusted with a switch ■ The flow meter is equipped with a needle valve to regulate the specified amount of air *For more details, please refer to the PDF document or feel free to contact us.

• Testing Equipment and Devices

This device is a testing instrument used to measure the consistency of grease and petrolatum. Under constant temperature conditions, a standard cone is dropped vertically into the sample for 5 seconds, and the depth of penetration (distance traveled) is measured in 0.1 mm increments. The consistency measurement methods are divided into mixed consistency, unmixed consistency, multiple mixed consistency, and solid consistency. ■ Standards JIS K-2220 ASTM D-217 IP-50 ■ Model GP-DT We also manufacture 1/4 scale and 1/2 scale consistency meters. *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments
• Testing Equipment and Devices

The "RT-E type" is a balanced sealed device capable of rapidly measuring the flash point of volatile substances and determining the ignition point within a specified temperature range (hazard assessment). It allows for a wide range of flash point measurements from -30 to +250°C. The lid, which includes a sample container, a movable plate, and a mechanism for exposing the test flame, complies with various standards. 【Features】 ■ Temperature is displayed digitally and in conjunction with a glass thermometer ■ Temperature setting is easy and accurate with a digital method ■ Heater comes with a switch for changing modes ■ Timer included for accurately measuring the waiting time after injecting the sample into the sample container ■ Aluminum alloy is used for the sample container to maintain temperature stability *For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments

The "VB-XR type" is a low-temperature constant temperature bath used for testing the kinematic viscosity of Newtonian liquid crude oil and petroleum products using a glass capillary viscometer. The cooling method employs either an immersion freezer or a closed-type freezer, allowing for the simultaneous measurement of 2 or 3 viscometers. Using an air-cooled closed-type freezer eliminates the need for water piping work. 【Features】 ■ Capable of simultaneously measuring 2 or 3 viscometers, with clear observation of the viscometers inside the bath ■ Utilizes a rectangular metal bath ■ The liquid level in the testing bath is constantly maintained at a fixed level ■ The interior of the bath features a highly efficient jet-type stirring mechanism for excellent temperature distribution ■ Uses a convenient holder for easy attachment and detachment of viscometers *For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments
• Viscometer

The "VB Series" is a constant temperature bath used to test the kinematic viscosity of Newtonian liquid crude oil and petroleum products using a glass capillary viscometer. The outflow time required for a fixed volume of liquid to flow naturally through the capillary of a calibrated viscometer under strictly controlled temperature conditions is measured. Additionally, it can measure six viscometers simultaneously, and the illumination on both sides allows for clear observation of the viscometers inside the bath. We offer two types: the "VB-X6 type," which holds six viscometers, and the "VB-XT type," which is equipped with six digital timers. 【Features】 ■ Simultaneous measurement of six viscometers, with clear observation of the viscometers inside the bath ■ Glass bath construction ■ Highly efficient jet-type stirring mechanism for excellent temperature distribution ■ No vibrations from the electric motor ■ Convenient holder for easy attachment and detachment of viscometers *For more details, please refer to the catalog or feel free to contact us.

• Other measurement, recording and measuring instruments