DIN – ASTM – ISO Standards

A viscometer is a key and standardized instrument used in quality control laboratories, chemical, food, petroleum, pharmaceutical, and research industries for measuring viscosity, defined as a fluid’s resistance to flow. These instruments are manufactured in accordance with recognized international standards such as ASTM D445, ASTM D2171, DIN 51550, and ISO 3104, ensuring high accuracy and excellent repeatability.

Main Applications of Viscometers

• Measurement of viscosity of transparent liquids, viscous fluids, oils, solvents, and chemical compounds
• Quality control of petroleum products such as engine oils, greases, fuels, and lubricants
• Evaluation of food product quality (honey, sauces, beverages, dairy products, etc.)
• Viscosity measurement in paint, resin, polymer, and adhesive industries
• Application in pharmaceutical and cosmetic formulations
• Use in research laboratories, standard testing, and reference calibration facilities

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Types of Viscometers and Applicable Standards

1. Flow Cup Viscometer

Standards: ASTM D4212 – ISO 2431 – DIN 53211

Suitable for low- to medium-viscosity liquids, particularly in paint and resin industries.

Advantages

• Simple and fast operation
• Ideal for production-line testing

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2. Ubbelohde Capillary Viscometer

Standards: ASTM D446 – ISO 3105 – DIN 51562

One of the most accurate laboratory viscometers for measuring kinematic viscosity.

Advantages

• Exceptional accuracy
• Ideal for calibration purposes
• Excellent repeatability

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3. Falling Ball Viscometer (Höppler)

Standards: DIN 53015 – ISO 12058

Designed for transparent, Newtonian liquids.

Advantages

• No electronic components required
• Reliable and stable accuracy

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4. Rotational (Brookfield-Type) Viscometer

Standards: ASTM D2196 – ISO 2555 – DIN 54453

The most widely used viscometer for non-Newtonian fluids, pastes, gels, and highly viscous materials.

Advantages

• Wide viscosity measurement range
• Compatible with printers and analysis software
• Suitable for advanced rheological testing

General Features of Standard Viscometers

• Manufactured in compliance with DIN, ASTM, and ISO standards
• High measurement accuracy and reliable repeatability
• Suitable for both Newtonian and non-Newtonian fluids
• Available with Certificate of Conformity
• Calibratable according to reference standards
• Suitable for industrial, research, and quality control laboratories
• Manufactured in Europe / Germany (depending on model)

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Technical Specifications by Viscometer Type

Flow Cup Viscometer

• Material: Stainless steel or aluminum
• Internal or external stopwatch
• Standard cup sizes (DIN 4, ISO 4, etc.)

Ubbelohde Viscometer

• Material: Borosilicate glass
• High-precision measurement
• Available in various sizes (Type 1, 2, 3, etc.)

Brookfield-Type Viscometer

• Speed range: 0.1 to 100 RPM
• Standard spindles: LV / RV / HA / HB
• Digital display with USB connectivity

Falling Ball Viscometer

• Standard glass tube
• Temperature control range: 20°C to 25°C

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Guide to Selecting the Appropriate Viscometer

1. Required standard (ASTM / DIN / ISO)
2. Fluid type (Newtonian or non-Newtonian)
3. Viscosity measurement range
4. Digital or analog version requirement
5. Required measurement accuracy
6. Environmental conditions and test temperature

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Advantages of Purchasing from Our Organization

• Supply of the latest and most accurate standard viscometers
• Full availability of flow cup, Ubbelohde, Brookfield, and falling ball models
• Provision of certificates of authenticity and conformity
• Expert technical support for selecting the optimal model
• Suitable for quality control, industrial, research, and calibration laboratories