0 items
Replacement roll of ISO 8502-3 specified tape for use in determining the size and quantity of dust particles on blast cleaned surfaces.
A dust tape test allows assessment of the quantity and size of dust particles on surfaces prepared for painting. Dust on blast-cleaned surfaces can reduce coating adhesion, leading to premature coating failure and sub-standard coating finish.
Used in conjunction with the Elcometer 145 Dust Tape Roller the Elcometer 142 Dust Tape Test kit can be used in accordance with the recommendation of BS EN ISO 8502-3 either as a pass/fail test or as a permanent record of the presence of dust. Supplied in a carry case for use in the field to assess surface cleanliness.
Elcometer 142 instructions
Box contents:
• 10 x magnifier with 2 batteries (LR14) and graticule
• Adhesive tape to specification ISO 8502-3
• Comparator display board/operating instructions
• Dust assessment plate
• Test record sheet, x 25
Test procedure
1. Before you start testing, remove and dispose of three complete turns of tape from the roll.
2. Remove a piece of tape about 200 mm long and hold it by the ends only.
3. Place the sticky side of the tape onto the test surface and use your thumb or the Elcometer 145 Dust Tape roller to cause it to adhere; rub along the length of the tape 3 times in each direction at a constant speed using firm pressure; each stroke should take approximately 6 seconds. At least 150 mm of untouched tape should now be firmly stuck to the surface.
4. Grasp the tape at one end and pull it away from the test surface; once removed, hold the tape by the ends only.
5. Place the sticky side of the tape onto the transparent plastic strip included in this test kit and apply gentle pressure with the thumb to cause it to adhere.
6. Place the plastic strip on to a black or white strip on the comparator display board on the other side of this page; choose whichever colour highlights the dust on the tape most clearly.
7. Assess the quantity of dust on the tape: compare the dust on the tape with the samples at the bottom of the comparator display board and record the dust rating
number which is the closest match. Any overall discoloration of the tape should be recorded as dust rating 5, size class 1.
8. Assess the size of the dust particles on the tape: view the dust using the magnifier and with reference to Table 1, record the dust size class of the predominant particles.
9. Carry out at least three tests on the surface being investigated. If the dust rating number of the three tests differs by more than one, conduct at least two additional tests and calculate the average of the results.
10. To provide a permanent record of the presence of dust, stick the strips of tape on to the test record sheet.
11. Residues of tape or adhesive must be removed before the test surface is painted.
Spares
Contact Elcometer or your local supplier to purchase the following spare parts:
Elcometer 145 Dust Tape Roller E145—-1
Test record sheet: T14219451
Display board: T14219454
Adhesive tape (1 roll): T14223003
Dust assessment plate: T14219525
Source: https://downloads.elcometer.com/PDFs/InstructionManuals/English/142.pdf
Replacement roll of ISO 8502-3 specified tape for use in determining the size and quantity of dust particles on blast cleaned surfaces.
A dust tape test allows assessment of the quantity and size of dust particles on surfaces prepared for painting. Dust on blast-cleaned surfaces can reduce coating adhesion, leading to premature coating failure and sub-standard coating finish.
Used in conjunction with the Elcometer 145 Dust Tape Roller the Elcometer 142 Dust Tape Test kit can be used in accordance with the recommendation of BS EN ISO 8502-3 either as a pass/fail test or as a permanent record of the presence of dust. Supplied in a carry case for use in the field to assess surface cleanliness.
Elcometer 142 instructions
Box contents:
• 10 x magnifier with 2 batteries (LR14) and graticule
• Adhesive tape to specification ISO 8502-3
• Comparator display board/operating instructions
• Dust assessment plate
• Test record sheet, x 25
Test procedure
1. Before you start testing, remove and dispose of three complete turns of tape from the roll.
2. Remove a piece of tape about 200 mm long and hold it by the ends only.
3. Place the sticky side of the tape onto the test surface and use your thumb or the Elcometer 145 Dust Tape roller to cause it to adhere; rub along the length of the tape 3 times in each direction at a constant speed using firm pressure; each stroke should take approximately 6 seconds. At least 150 mm of untouched tape should now be firmly stuck to the surface.
4. Grasp the tape at one end and pull it away from the test surface; once removed, hold the tape by the ends only.
5. Place the sticky side of the tape onto the transparent plastic strip included in this test kit and apply gentle pressure with the thumb to cause it to adhere.
6. Place the plastic strip on to a black or white strip on the comparator display board on the other side of this page; choose whichever colour highlights the dust on the tape most clearly.
7. Assess the quantity of dust on the tape: compare the dust on the tape with the samples at the bottom of the comparator display board and record the dust rating
number which is the closest match. Any overall discoloration of the tape should be recorded as dust rating 5, size class 1.
8. Assess the size of the dust particles on the tape: view the dust using the magnifier and with reference to Table 1, record the dust size class of the predominant particles.
9. Carry out at least three tests on the surface being investigated. If the dust rating number of the three tests differs by more than one, conduct at least two additional tests and calculate the average of the results.
10. To provide a permanent record of the presence of dust, stick the strips of tape on to the test record sheet.
11. Residues of tape or adhesive must be removed before the test surface is painted.
Spares
Contact Elcometer or your local supplier to purchase the following spare parts:
Elcometer 145 Dust Tape Roller E145—-1
Test record sheet: T14219451
Display board: T14219454
Adhesive tape (1 roll): T14223003
Dust assessment plate: T14219525
Source: https://downloads.elcometer.com/PDFs/InstructionManuals/English/142.pdf
