Gardner bubble viscoMeter

The Gardner bubble viscometer measures the viscosity of a liquid by comparing the bubble rise speed in the sample tube with that in the standard tube. Bubbles rise more slowly in viscous liquids, and the viscosity value is obtained by comparing it with the scale of the standard tube. It is used for on-site rapid detection of fluid viscosity in industries such as coatings and inks.
Selection
When selecting, consider matching the viscosity range of the sample to be tested with the standard tube specifications, as sample transparency affects reading accuracy, and environmental temperature needs to be controlled for stability. Ease of operation, integrity of standard tubes, and compatibility with timing tools are routine considerations.

Terms

Standards

Instruments

Glass testtube with bubble well structure, length 100mm, diaMeter 27mm, capacity 8 square centiMeters, suitable for a variety of PolariMeter types.

$ 119.00

Glass shell structure with bubble well design, testtube length 200mm, diaMeter 27mm, capacity of 15 square centiMeters, to ensure the accuracy of Optical inspection measurement and ease of operation.

$ 119.00

Measurement range 0-500NTU, accuracy +/- 2% FS, built-in bubble elimination system to improve Stability, support for automatic cleaning and RS485 communication.

$ 780.00

Using white water circulation and electric water supply system, equipped with bubble homogenization and manual homogenization dual-use functions, the diaMeter of the extraction cylinder is 200mm, the capacity is 10 liters, and the sealing and clamping device avoids burring leakage.

$ 2090.00

The equipment uses a built-in bubble level to ensure the level of placement, the catheter belt double scale for accurate operation, support a variety of standard tests, drop weight mass can be selected 900g or 1000g, punch diaMeter is Φ 15.9mm and Φ 20mm.

$ 4682.00

Adapt to a variety of Viscometer use, suitable for factory field applications, real-time printing measurement results, no need to hand copy, easy operation, can save labor time.

$ 183.00

Supports more than 30 chroma indicators, Measurement accuracy ≤ E * ab ≤ 0.01, single measurement only takes 1.5 seconds, minimum liquid addition is as low as 1ml, equipped with thermostatic sample tank and 7 inch Touchscreen.

$ 4075.00

The test program can be uploaded to the Viscometer host, the analysis record data can be collected, the rheological Linear dispersion and Excel can be generated, and five sets of data can be plotted and compared at the same time.

$ 204.00

Measurement accuracy of 0.1 ℃, range of 0~ 100 ℃, real-time display of temperature values, suitable for a variety of Viscometer models, to ensure a stable test environment.

$ 135.00

Silicone oil standard solution, calibrated viscosity 380cp, capacity 400ml, suitable for Viscometer calibrating.

$ 185.00

Measurement accuracy +/- 2%, equipped with 5 calibrated oils to ensure measurement accuracy, as a special accessory for cone-plate viscoMeter to achieve stability testing.

$ 2953.00

The shear rate is 2.0N, only 0.5ml sample volume can be completed to complete the test, suitable for a variety of models of Viscometer host, to meet the measurement needs of different viscosity ranges.

$ 683.00

Provides accurate viscosity values of 5.7cp, 400ml per bottle for Viscometer calibrated measurement Stability and Reliability.

$ 185.00

Range 5-50p, accuracy of +/- 2%, equipped with 5 kinds of special calibrated oil to ensure measurement accuracy, as the core component of cone-plate viscoMeter to ensure test Stability.

$ 2931.00

Shear rate 3.84N, sample size only 0.5ml, suitable for a variety of Viscometer models, ensuring High Accuracy measurement and wide applicability.

$ 683.00

Articles

Application of High-Temperature Viscometer in Testing the Melt Viscosity Characteristics of Hot Melt Ink
This article introduces a method for testing the melt viscosity of hot-melt ink using a high-temperature viscometer. The test employs a rotational viscometer to measure the viscosity of three ink samples at different temperatures.
Application of Cone-and-Plate Viscometer in Determining the Rheological Curve of Non-Newtonian Fluids in UV Inks
This article introduces how a cone-plate viscometer measures the rheological curve of UV ink. UV ink is a non-Newtonian fluid whose viscosity changes with shear rate.
Guide to Selecting a Laboratory Rotational Viscometer for Coatings Development
This article introduces how to select a laboratory rotational viscometer in coatings research and development. It first explains the principle of rotational viscometers measuring viscosity based on shear resistance, and then points out that key parameters to consider during selection include measurement range, shear rate, temperature control, and rotor configuration.
High-temperature viscometer evaluates the flow characteristics of ceramic coatings before sintering.
This article introduces how to use a high-temperature viscometer to evaluate the flow characteristics of ceramic coatings before sintering. During measurement, the instrument detects changes in the viscosity of the coating sample under simulated sintering temperature conditions using rotational or oscillatory principles.
Practical Guide to Selecting Rotors and Speeds for Rotational Viscometers
A rotational viscometer measures viscosity by detecting the resistance encountered by a rotor rotating in the sample. When selecting a rotor, it is necessary to consider the estimated viscosity range of the sample, ensuring that the torque reading falls within 10% to 90% of the instrument's measurement range, while also taking into account the sample volume and rheological properties.
High-temperature viscometer measures the flow behavior of powder coatings in the molten state.
This article introduces the use of a high-temperature viscometer to measure the flow behavior of powder coatings in their molten state. Powder coatings need to melt and flow before curing, a process that directly affects the smoothness and performance of the coating.
Temperature-controlled Rotational Viscometer Simulates Coating Rheology in Construction Environments
This article introduces how to use a temperature-controlled rotational viscometer to simulate construction environments in order to study the flow characteristics of coatings. The viscosity of coatings changes under different temperatures and shear conditions, which affects their application performance.
Negative pressure method leak detector for testing vacuum packaging seal integrity
The negative pressure leak detector evaluates the seal integrity of vacuum packaging by simulating a pressure differential environment. The instrument places the sample in a testing chamber and creates a vacuum to form negative pressure. If there is a leak, air or liquid will seep into the packaging, and the result is determined by observing pressure changes or the presence of bubbles.
Comparison of Rotational Viscometer and Capillary Rheometer in Testing the Flowability of Resin Processing
The rotational viscometer measures torque via rotor rotation, making it suitable for testing the static or low-shear fluidity of resins under low shear rates, with simple and quick operation. The capillary rheometer, on the other hand, forces samples through a capillary to simulate high-shear processing, providing flow data closer to actual production conditions, but it is more complex and time-consuming to operate.
Rotational Viscometer Measures Viscosity and Processability of Resin Melts
A rotational viscometer calculates viscosity by measuring the torque experienced by a rotor as it rotates in the resin melt, thereby helping to understand the material's processing properties.
Rotational Viscometer for Measuring and Controlling the Application Viscosity of Coatings
A rotational viscometer is a commonly used tool for controlling the viscosity of coatings during application, as it measures the torque generated by a rotor rotating in a fluid to calculate viscosity.
Method for determining the dynamic viscosity of varnish using a falling ball viscometer
This article introduces a method for measuring the dynamic viscosity of varnish using a falling-ball viscometer. It is based on Stokes' law, which calculates viscosity by measuring the time required for a standard small ball to fall a fixed distance in a vertical glass tube filled with varnish.
Stormer Viscometer for Determining Krebs Viscosity of Paints
This article introduces the method of measuring the Krebs viscosity value of colored paints using a Stormer viscometer. Viscosity is a key indicator that affects the application and storage of coatings. The Krebs unit (KU) quantifies viscosity based on the resistance encountered by a rotor as it rotates within the paint sample.
Rotational viscometer measures the viscosity of paint at low shear rates.
This article introduces the method and significance of measuring the viscosity of colored paint at low shear rates using a rotational viscometer.
Application of Two-Step Method with Pre-Coating and Fine-Coating in Eliminating Bubble Defects for Dual-Blade Coater
The dual-blade coater employs a two-step method of pre-coating and precision coating to eliminate bubble defects during the coating process. In the pre-coating stage, high shear force is applied to break the bubbles in the slurry, causing them to rupture and rise to the surface. The precision coating stage then precisely controls the coating thickness, removing any remaining bubbles to form a uniform wet film.