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IS 5807:2000 (Part 4) is the Indian Standard (BIS) for methods of test for clear finishes for wooden furniture, part 4: resistance to marking by liquids. This standard specifies the test method for determining the resistance of clear finishes on wooden furniture to marking by various liquids. It details the procedure of applying specific household liquids to a finished surface for a set period and assessing the resulting damage, like blistering, swelling, or loss of gloss.
Methods of test for clear finishes for wooden furniture, Part 4: Resistance to marking by liquids
Overview
Status
Current
Usage level
Specialized
Domain
Materials Science — Building Construction Practices incl. Painting, Varnishing
! The standard defines the test method, not the pass/fail criteria. Performance requirements must be specified separately by the purchaser or in a product standard.
! Proper conditioning of test panels as per IS 101 is critical for obtaining consistent and comparable results.
! Interpretation of damage, especially for the scratch test (penetration to the substrate), requires careful observation, often with magnification and controlled lighting.
EN 12722:2009+A1:2013CEN (European Committee for Standardization), Europe
HighCurrent
Furniture — Assessment of surface resistance to dry heat
Specifies a method to assess the resistance of furniture surfaces to hot objects, forming the basis for performance levels.
BS 3962-6:1980BSI (British Standards Institution), UK
HighWithdrawn
Methods of test for finishes for wooden furniture — Part 6: Resistance to dry heat
Provided the historical UK national standard for the same test before harmonization with EN standards.
ISO 4211-3:1993ISO (International Organization for Standardization), International
HighWithdrawn
Furniture — Tests for surfaces — Part 3: Assessment of resistance to dry heat
Was the primary international standard for this test method, now effectively replaced by the European standard.
Key Differences
≠IS 5807-1 specifies the test block's material and dimensions but not its mass, whereas EN 12722 specifies a mass of 200 g ± 20 g for its primary aluminium test block.
≠EN 12722 provides a structured set of defined test temperatures (from 55°C to 160°C) for different performance levels, while IS 5807-1 primarily suggests a single temperature of 70°C, with others subject to agreement.
≠The tolerance for the test duration is tighter in the Indian standard (20 min ± 15 sec) compared to the European standard (20 min ± 1 min).
≠EN 12722 allows for an alternative, lighter (100 g) steel test body for lower temperature tests, an option not present in the Indian Standard.
Key Similarities
≈Both standards use the same fundamental test principle: placing a heated cylindrical metal block onto the finished surface for a set time to assess damage.
≈Both standards mandate the use of a 3 mm thick wool felt disc placed between the hot metal block and the test surface to ensure even heat transfer.
≈The assessment methodology is nearly identical, using a 5-point rating scale (1 = no change to 5 = strong change) based on visual inspection after a recovery period.
≈The recommended recovery period before assessment is consistent, with IS 5807-1 specifying 16-24 hours and EN 12722 specifying a minimum of 16 hours.
Parameter Comparison
Parameter
IS Value
International
Source
Test Block Material
Aluminium alloy
Aluminium (primary) or Steel (alternative)
EN 12722:2009+A1:2013
Test Block Mass
Not specified
200 g ± 20 g (Aluminium); 100 g ± 10 g (Steel)
EN 12722:2009+A1:2013
Test Block Diameter
50 mm
50 mm ± 0.5 mm
EN 12722:2009+A1:2013
Felt Disc
3 mm thick wool felt
3 mm ± 0.3 mm thick wool felt
EN 12722:2009+A1:2013
Standard Test Temperature
70 °C ± 1 °C (others by agreement)
Defined scale of temperatures (e.g., 55, 70, 85, 100 °C...)
EN 12722:2009+A1:2013
Test Duration
20 minutes ± 15 seconds
20 minutes ± 1 minute
EN 12722:2009+A1:2013
Recovery Period Before Assessment
16 to 24 hours
At least 16 hours
EN 12722:2009+A1:2013
Assessment Rating Scale
5-point scale (1=No change to 5=Strong change)
5-point scale (1=No change to 5=Strong change)
EN 12722:2009+A1:2013
⚠ Verify details from original standards before use
Key Values5
Quick Reference Values
Impact test steel ball mass500 ± 5 g
Impact test steel ball diameterapprox. 50 mm
Scrape test tool (loop) materialHardened steel wire
What are the three main tests for mechanical damage in this standard?+
The standard covers the Scratch Test (Clause 2), Scrape Test (Clause 3), and Impact Test (Clause 4).
What is the standard mass of the ball for the impact test?+
A 500 g steel ball is used for the impact test (Clause 4.1.2).
How is scratch resistance determined?+
A needle with increasing load is drawn across the surface. The resistance is the maximum load that does not cause the needle to penetrate the finish down to the wood substrate (Clause 2).
Does this standard apply to paints on furniture?+
No, its scope is limited to 'Clear Finishes for Wooden Furniture' as stated in the title.