Viscosity comparison tubes

Article No. 0600

Cert. Bubble Viscometer A5-A1
Viscosity Range 0.05 - 0.31 St Set with Certificate

Kinematic viscosity in Stokes: 0.05 - 0.31
Set of 5 bubble tube standards A5 - A1 with 2 empty tubes (Grade A)
Certificate included

More options

Certificate

Viscosity

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Features

BYK-Gardner bubble viscometers are used to quickly determine kinematic viscosity of known liquids such as resins and varnishes. The bubble viscometer tubes are also described as Gardner-Holdt tubes.The bubble viscometer sets are bubble tubes arranged in the most common viscosity ranges.

Economically priced
Certified bubble viscometers are available
Compliant with ASTM methods D1131, D1545, D1725
Long lasting shelf life up to 15 years
Ideal to measure the kinematic viscosity of resins and varnishes
Easy to compare and rank the sample with the bubble viscometer standards

Technical Attributes

Technical Specifications

Viscosity

0.05 - 0.31 St
Certificate

with Certificate

Standards

ASTM

D1131 D1725 D1545

Procedure

Bubble Viscometer Procedure

Knowing the approximate viscosity, pick four standard tubes closest in viscosity to your sample
Fill the sample tube with liquid, insert a cork, and then using the tube holder 0577, insert the four lettered tubes and the sample tube into the holder
Turn over the holder and visually compare what letter best matches the rise time of the bubble in the sample
The rise time in seconds of the sealed tubes and samples can also be determined using a basic timer

Please be aware of the following accuracies when performing the test:
Temperature control: 1 °C = 10 % error
Verticality control: 5° slant = 10 % error
Tube I.D. control: 0.1 mm = 2 % error

ASTM D 1545 Timer Method

The tube has three amber ring marks at 27, 100 and 108 mm from the bottom. Fill the tube up to the 100 mm line, insert the cork down to the 108 mm line and turn the tube bottom up. Turn the tube around, start the stop watch when the air bubble crosses the 27 mm line and stop when the bubble crosses the 100 mm line.

Delivery Content

Set of 5 bubble tube standards A5-A1 (0601-0605)
2 empty tubes grade A (0571)
Certificate
Manual
Storage case

Knowledge

Guide to Viscosity Measurement

Viscosity is an important property of liquids to determine how they flow, spread, or level under certain conditions. It can be defined as a liquid’s internal resistance to flow. Being able to measure the viscosity will allow to predict the behavior in a process or an application. When applying a paint by roll application the paint viscosity will strongly influence the amount of paint applied per surface area, thereby determining both yield and hiding power. It is crucial for liquid products to undergo a viscosity measurement in incoming and outgoing QC.

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