Abnormal Testing Supplies
ED&D abnormal testing supplies support repeatable fire-hazard indication, abnormal operation testing, component fault evaluation, and heat-resistance verification in electrical safety programs associated with IEC 60335, IEC 60601, IEC 60950, IEC 61010, UL, EN 61010, and EN 60950. This product family includes ACC-01 Cheesecloth, ATP-01 Tissue Paper, ACG-01 Cotton Gauze, ACP-01 Cotton Pad, BPT-01 Ball Pressure Tester, and BPA-01 Ball Pressure Test Stand for abnormal test setups where indicator materials, untreated cotton media, and defined thermal test fixtures are specified by the method.
Fire-Hazard Indicator Materials
Cheesecloth and tissue paper are used in abnormal test setups to help indicate ignition or flame-related hazard during fault testing.
Simple Supplies, Critical Role
These materials and fixtures may look basic, but they are important to method compliance when the standard calls for specific untreated media or defined thermal test apparatus.
Organized by Test Function
This page is grouped into indicator materials, absorbent media, heat-resistance fixtures, comparison guidance, and applications to make selection easier.
Tell us the exact standard and abnormal test method, and we can help identify the correct indicator material, absorbent media, or thermal test fixture for your setup.
Abnormal Testing Supplies for Fire Hazard, Fault Evaluation, and Heat Resistance Testing
Abnormal testing supplies are used in product safety labs when a standard calls for specific indicator materials, absorbent cotton media, or support fixtures during a fault simulation, abnormal operation test, or elevated-temperature material evaluation. These products are commonly used in setups involving component fault conditions, locked rotor tests, fan failure scenarios, and other abnormal operation methods where ignition behavior, fire hazard, or heat-related deformation must be observed.
ED&D’s abnormal testing supply family includes untreated cheesecloth, tissue paper, cotton gauze, and cotton pad products used in standards-based abnormal test arrangements, along with ball pressure testing equipment used to evaluate the heat resistance of insulating materials supporting hazardous live parts.
The products below are positioned for abnormal testing and related heat-resistance programs associated with IEC 60335, IEC 60601, IEC 60950, IEC 61010, UL, EN 61010, and EN 60950, while final suitability still depends on the exact clause, material placement, thermal conditioning, and test arrangement required by the governing standard.
Important standards note: abnormal testing supplies and support fixtures should match the exact material type, weight, weave, thickness, treatment condition, force, temperature, and placement required by the governing method. Substituting a “close enough” shop material or improvised fixture can undermine the test setup.
How This Page Is Organized
- Indicator Materials: cheesecloth and tissue paper used to indicate ignition or fire hazard during abnormal tests
- Absorbent Media: cotton gauze and cotton pad materials used in methods that require untreated cotton-based media
- Heat Resistance Testing: ball pressure tester and balancing stand used to evaluate deformation of insulating materials at elevated temperature
Indicator Materials for Abnormal Testing
ACC-01 Cheesecloth
ACC-01 Cheesecloth is used to test for the possibility of ignition and to indicate fire hazard during abnormal tests such as component fault, locked rotor, and fan failure conditions.
In many abnormal test arrangements, the cheesecloth is placed over tissue paper and used as part of the fire-hazard indicator setup.
Material details include untreated cotton construction, thread count of 32 x 28 threads per inch (12.6 x 11.0 threads per cm), weight between 35.7 and 38.5 g/m², minimum width of 0.914 m (36 in. / 1 yard), and minimum length of 4.572 m (5 yards).
Positioned for abnormal testing associated with IEC 60601, IEC 60950, IEC 61010, UL, EN 61010, and EN 60950.
ATP-01 Tissue Paper
ATP-01 Tissue Paper is an undyed, strong, lightweight tissue used in abnormal testing setups where tissue paper is required as part of the ignition or fire-hazard indication arrangement.
Tissue paper weight range is 12 to 30 g/m². Product is supplied in packages of ten sheets, each measuring 20 x 25 in.
Positioned for testing associated with IEC 60601, IEC 60950, IEC 61010, EN 61010, and EN 60950.
Indicator-material note: in abnormal test methods, the placement and layering of tissue paper and cheesecloth can be just as important as the material specifications themselves.
Absorbent Cotton Media
ACG-01 Cotton Gauze
ACG-01 Cotton Gauze is a dry, absorbent, white, untreated, surgical-grade 100% cotton gauze used in test setups that require a loose-weave cotton medium.
Material size is 4.5 in. x 10 ft. with thickness of approximately 1/32 in. The loose weave allows air to pass freely through the material.
ACP-01 Cotton Pad
ACP-01 Cotton Pad is a dry, absorbent, white, untreated, 100% cotton pad used when a thicker absorbent cotton medium is required by the test setup.
Material size is 6.0 in. x 16 in.. It is surgical grade and approximately 1 inch thick. Air does not easily pass through this material, making it distinctly different from the loose-weave gauze format.
Media note: cotton gauze and cotton pad are not interchangeable. Their thickness, weave, airflow behavior, and absorbency are different and should be matched to the exact test requirement.
Heat Resistance Testing
Ball pressure testing is used to evaluate the heat resistance of insulating materials that support hazardous live parts, including components such as terminal backs, transformer bobbins, and similar polymer-based supports. The method applies a defined force at elevated temperature to determine whether the material resists deformation as required by the applicable safety standard.
BPT-01 Ball Pressure Tester
BPT-01 Ball Pressure Tester is used for testing plastics to which hazardous voltage parts are mounted, including terminal backs, transformer bobbins, and similar insulating supports. The unit exerts a defined 20 N force on the specimen and is constructed entirely of stainless steel for durability and repeatable use.
This test is required to be conducted in an oven at elevated ambient temperature, making temperature control and specimen conditioning part of the overall method.
Positioned for testing associated with IEC 60335, IEC 60601, IEC 60950, IEC 61010, EN 60950, and harmonized UL and CSA programs.
BPA-01 Ball Pressure Test Stand
BPA-01 Ball Pressure Test Stand is a balancing stand designed for use with the BPT-01 Ball Pressure Tester. It supports stable positioning of the test assembly and helps maintain a consistent setup during ball pressure testing.
Positioned for testing associated with IEC 60601, IEC 60950, and EN 60950.
Ball pressure note: this method depends on both applied force and elevated temperature. Proper oven conditions, specimen support, and timing are part of achieving a valid result.
Which Abnormal Testing Supply Is Right for Your Lab?
| Product | Primary Use | Material / Fixture Type | Best Fit |
|---|---|---|---|
| ACC-01 | Fire-hazard indication | Untreated cotton cheesecloth | Abnormal test setups using cheesecloth over tissue paper |
| ATP-01 | Fire-hazard indication | Undyed lightweight tissue paper | Indicator-paper layer in abnormal testing arrangements |
| ACG-01 | Absorbent test medium | Loose-weave cotton gauze | Methods requiring breathable untreated cotton gauze |
| ACP-01 | Absorbent test medium | Dense untreated cotton pad | Methods requiring thicker absorbent cotton media |
| BPT-01 | Heat resistance testing | Ball pressure apparatus | Evaluating deformation of insulating materials under load and temperature |
| BPA-01 | Test support fixture | Balancing stand | Supporting stable and repeatable ball pressure test setup |
Selection guidance: start with the exact standard and abnormal test arrangement, then match the material or fixture by weave, thickness, absorbency, force application, temperature requirement, and placement in the setup.
Frequently Asked Questions
What are abnormal testing supplies used for?
They are used in abnormal operation and fault-condition tests where the method requires specific indicator materials, absorbent media, or support fixtures to help assess ignition, burning behavior, fire hazard, or heat resistance.
Why are cheesecloth and tissue paper often used together?
In many abnormal test setups, tissue paper and cheesecloth are layered together to serve as a fire-hazard indicator arrangement during abnormal fault conditions.
What is ball pressure testing used for?
Ball pressure testing is used to evaluate the heat resistance of insulating materials that support hazardous live parts, especially where the applicable standard requires the material to resist deformation under load at elevated temperature.
Why must the ball pressure test be conducted in an oven?
Because the method evaluates how the insulating material behaves under a defined load at elevated ambient temperature. The thermal condition is part of the test, not just the fixture.
What is the difference between cotton gauze and cotton pad?
Cotton gauze has a loose weave that allows air to pass through it more easily, while cotton pad is thicker, denser, and less permeable to airflow.
Can I substitute common lab or medical materials?
Not safely. Even if a material looks similar, the weave, weight, thickness, treatment, absorbency, or thermal performance may differ from what the standard requires.
Send the exact abnormal test method and required material or fixture callout, and we can help identify the correct support product.
Typical Abnormal Testing Supply Applications
ED&D abnormal testing supplies are used in electrical safety laboratories, product certification programs, component fault testing, motor locked-rotor testing, fan failure simulation, and other abnormal operation workflows where standardized support materials and fixtures are required.
Depending on the product and method, these workflows may relate to IEC 60335, IEC 60601, IEC 60950, IEC 61010, UL, EN 61010, and EN 60950.
- Component fault abnormal testing
- Motor locked-rotor abnormal test setups
- Fan failure and overheating hazard indication
- Layered tissue paper and cheesecloth fire-hazard indication
- Use of untreated cotton materials in specified lab methods
- Bench-top abnormal operation test arrangements
- Ball pressure testing of insulating materials
- Elevated-temperature evaluation of terminal supports and bobbins
- Repeatable heat-resistance verification using defined support fixtures
Method note: abnormal testing supplies are part of the method, not just background materials. Their composition, construction, and placement should match the exact setup required by the governing standard.