Testex X-Coarse Grade Press-O-Film Replica Tape 1.5 to 4.5 mils / 38 to 115 microns RTXC

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Testex X-Coarse Grade Press-O-Film Replica Tape RTXC

Range: 1.5 to 4.5 mils / 38 to 115 microns

Testex Press-O-Film Replica Tape can be used with a Testex Micrometer or PosiTector RTR Replica Tape Reader to measure the surface roughness ("profile") of blast-cleaned steel.

50 tests per roll

Testex Press-O-Film Replica Tape offers a unique replica technique and with a simple Testex Micrometer or PosiTector RTR Replica Tape Reader will allow you to take accurate, low-cost blast-surface profile measurements. Testex Press-O-Film makes surface replicas easy to obtain and produces average maximum peak-to-valley readings that ensure optimum blasting effectiveness. Replicas can be retained for future needs.

The accuracy of Testex measurements is due to an innovative two-level film that can produce virtually exact replicas of the abrasive blast surfaces. The film is available in three different thickness grades to cover the most common range of blast profiles.

Measurements can be taken in locations that are not possible using conventional stylus devices, e.g. internal pipe diameters and grooves, etc.

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Specifications
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Testex Press-O-Film replica tape is available in a variety of thicknesses to facilitate profile measurement in differing ranges:


Testex Press-O-Film Replica Tape Medium Grade	Testex Press-O-Film Replica Tape Coarse Minus Grade	Testex Press-O-Film Replica Tape Coarse Grade	Testex Press-O-Film Replica Tape X-Coarse Grade	Testex Press-O-Film Replica Tape X-Coarse Plus Grade
Range When Used With Gauge (mils) / (microns)
not applicable	0.5 to 1.0 / 12 to 25	0.8 to 2.5 / 20 to 64	1.5 to 4.5 / 38 to 115	4.6 to 5.0 / 116 to 127

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Related Products
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Testex Micrometer Dial Thickness Gauge

To be used with Testex replica Press-O-Film Tape to measure the surface roughness of blast cleaned surfaces.

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DeFelsko PosiTector RTR H
Replica Tape Reader

Surface Profile Gage for Blasted Steel and Textured Coatings
Digital spring micrometers measure and record surface profile parameters using Testex Press-O-Film replica tape

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DeFelsko Positector RTR 3D
Replica Tape Reader to Measure & Record 2D/3D Surface Profile Parameters

Digital spring micrometers measure and record surface profile parameters using Testex Press-O-Film replica tape
Download 3D .SDF image files for analysis in included software for Windows and Mac

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Downloads
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Testex X-Coarse Grade Press-O-Film Replica Tape - Brochure

Replica Tape Article - A Source of New Surface Profile Information

Testex Press-O-Film Replica Tape - Online Instructions Manual

F.A.Q.

What is replica tape?

Testex Press-O-Film replica tape consists of a layer of crushable plastic microfoam coated onto polyester film of highly uniform thickness. It is sold in a number of grades to accommodate measurements in different profile ranges.

What is Press-O-Film HT?

Testex Press-O-Film HT is an improved version of Press-O-Film (discontinued in 2010). Press-O-Film HT (High Temperature) is formulated for better performance at high temperatures (up to 140°F or 60° C) encountered in the most challenging environments.

How does replica tape work?

Replica tape consists of a layer of compressible foam affixed to an incompressible polyester substrate. When pressed against a roughened (steel) surface, the foam collapses acquiring an impression of the surface. Placing the compressed tape between the anvils of a micrometric thickness gage, and subtracting the contribution of the incompressible substrate (50 µm or 2 mils), gives a measure of the surface profile. Consequently, the thickness of the compressed tape equals the average maximum peak-to-valley profile plus the thickness of the incompressible polyester substrate. A spring-loaded micrometer gage is used to measure the thickness of the replica.

How accurate is Testex Press-O-Film Replica Tape?

There are multiple ways of expressing the accuracy or precision of an instrument or test method. The most common method in our industry is to measure on traceable standards in a calibration laboratory. This is challenging for surface profile measurement instruments because no traceable surface profile standards exist. For some instruments, such as depth micrometers (ASTM D4417 Method B), accuracy can be estimated using calibrated height standards. For replica tape, the ASTM D01.46 committee used a set of panels blasted with a range of surface profiles, and compared the results from replica tape against measurements taken on the same panels using a calibrated drag stylus micrometer (ASTM D4417 Method D). Across the 0.8-4.5 mil (20-115 micron) primary range of replica tape, the readings differed by less than ± 0.3 mils (± 9 microns), as summarized in the table below. However, this tests the accuracy of the instrument or apparatus, but not necessarily the overall test method. For most users, it is more important that measurements are consistent between the various parties (for example, the specifier or contract author, the contractor, and the inspector). Because blasted surfaces are complex, random shapes, the ability of an instrument to measure height in a laboratory is not necessarily indicative of its ability to measure surface profile in a consistent, repeatable manner in the field. In 2011 the ASTM D01.46 committee preformed an interlaboratory study, which measured the reproducibility of measurements made by multiple users and laboratories (stated as the range that 95% of measurements from all operators across all laboratories fall within). The results are summarized as follows: The accuracy/reproducibility values are specified at 3 mils in the above table, and typically vary across the range of an instrument. For Replica Tape: In summary, independent studies have shown that Testex Press-O-Film replica tape is a highly accurate measurement method with industry-leading reproducibility

Why is measuring surface profile important?

Industrial steel in bridges, ships, railcars, etc., is almost always painted or otherwise coated to prevent corrosion. Before they can be painted, these metal surfaces must be cleaned and roughened to ensure that the paint adheres. This is usually done by grit or shot blasting the surface. If the resulting surface is too smooth, the paint or coating will not stick. If the surface is too rough, the peaks may poke through the coating allowing rusting to occur.

Is it necessary to average the measurements from two pieces of replica tape?

Most international standards instruct users of replica tape to take two replica tape readings in each measurement area, and average those two readings together to yield a 'Profile Measurement'. As with any test, averaging multiple measurements improves repeatability and accuracy. If a measurement made with either Coarse or X-Coarse replica tape is in the 'overlap range' of 38 to 64 µm (1.5 to 2.5 mils), a second measurement should be taken in the same spot with the other grade of tape. If BOTH readings are in the above Overlap Range, record the average of the two measurements as the peak-to-valley roughness. If EITHER reading is outside of the Overlap Range, record it as the profile height.

ADD TO CART THE ITEMS YOU WOULD LIKE TO PURCHASE
Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll RTXC View Model Details	$38.00
Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 5) RTXC-5 View Model Details	$190.00
Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 10) RTXC-10 View Model Details	$380.00
Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 50) RTXC-50 View Model Details	$1,900.00
Testex RTMMIL TX-GAGE Micrometer Dial Thickness Gauge, Inch Units	$220.00
Testex RTMMIC TX-GAGE-MTR Micrometer Dial Thickness Gauge, Metric Units	$220.00
Testex RTMMILLIN TX-LG Linearizing Spring Micrometer Gauge	$220.00
Testex RTKITMIL Press-O-Film Replica Tape Kit with Micrometer Dial Thickness Gauge Inch Units, Coarse and X-Coarse Tape Rolls, Training Surface and Burnishing Tool	$285.00
Testex RTKITMIC Press-O-Film Replica Tape Kit with Micrometer Dial Thickness Gauge Metric Units, Coarse and X-Coarse Tape Rolls, Training Surface and Burnishing Tool	$285.00
DeFelsko RTRBURNISH Burnishing Tool Steel	$10.00

ADD TO CART THE ITEMS YOU WOULD LIKE TO PURCHASE

Models

Price

Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll RTXC View Model Details

$38.00

Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 5) RTXC-5 View Model Details

$190.00

Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 10) RTXC-10 View Model Details

$380.00

Testex Press-O-Film Replica Tape, X-Coarse Grade, 1.5-4.5 mils / 38-115 microns, 50/Roll (Pack of 50) RTXC-50 View Model Details

$1,900.00

Recommended Accessories

PRICE

Testex RTMMIL TX-GAGE Micrometer Dial Thickness Gauge, Inch Units

$220.00

Testex RTMMIC TX-GAGE-MTR Micrometer Dial Thickness Gauge, Metric Units

$220.00

Testex RTMMILLIN TX-LG Linearizing Spring Micrometer Gauge

$220.00

Testex RTKITMIL Press-O-Film Replica Tape Kit with Micrometer Dial Thickness Gauge Inch Units, Coarse and X-Coarse Tape Rolls, Training Surface and Burnishing Tool

$285.00

Testex RTKITMIC Press-O-Film Replica Tape Kit with Micrometer Dial Thickness Gauge Metric Units, Coarse and X-Coarse Tape Rolls, Training Surface and Burnishing Tool

$285.00

DeFelsko RTRBURNISH Burnishing Tool Steel

$10.00

Testex X-Coarse Grade Press-O-Film Replica Tape 1.5 to 4.5 mils / 38 to 115 microns RTXC

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Testex X-Coarse Grade Press-O-Film Replica Tape 1.5 to 4.5 mils / 38 to 115 microns RTXC

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