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Vascozimetru de bule |
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| Cod.Produs ML-Bubble-Visco-04 |
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Tel. +4 (021) 312 7144
Fax. +4 (021) 312 7141 |
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 Vascometru cu bule
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 Bubble viscometer
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Method
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 PV-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
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 |
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| Cod. Prod. |
prod. |
Description |
| PV-0571 |
Empty Tubes, Grade A |
Inscription GARDNER MT in amber stain; inside diameter is checked for 10.65 ± 0.025 mm |
| PV-0573 |
Empty Tubes, Grade B |
Inscription GARDNER BT in amber stain; economical tube for making routine laboratory or factory comparisons; inside diameter 10.75 mm |
| PV-0575 |
Empty Tubes, Grade N |
Inscription GARDNER in amber stain; inside diameter is checked for 10.65 ± 0.025 mm; one additional marking at the bottom of the tube for establishing 73 mm bubble path; ASTM D 1545 term: Timer Tubes |
| PV-0576 |
Corks |
For use in retaining samples; used with all grades of tubes; supplied in lots of 150 per bag |
| PV-0577 |
Tube Holder |
Standards and samples are placed parallel to each other in a true vertical position; sturdy metal frame with plastic handle; fits up to 5 tubes; the flat area allows the holder to sit in a water bath or on a lab bench; comes without tubes |
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• Comes complete with: Empty tubes in lots of 144 per package including corks |
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• Amber markings in permanent stain are located on the empty tubes for establishing correct bubble size. |
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STM D 1545 Timer Method |
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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. |
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