Specifications for the Caledonian & Grampian Ranges

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Bridge of Weir, Specifications, leather sample being tested, finished leather and car seat detail

Bridge of Weir, Specifications, brown and grey leather swatches

Characteristics	Minimum Performance Standards	Test Method


Colour fastness to rubbing	Staining and colour change: Dry 1000 cycles, Min 4 grey scale Wet 500 cycles, Min 3 grey scale Perspiration 100 cycles, Min 4 grey scale	EN ISO 11640/ISO 11641 Perspiration solution as defined in ISO 11641
Colour fastness to light	Min 6 blue scale	ISO 105-B06/ cond.3

Cold crack resistance to finish	< -30°C (no finish cracks)	EN ISO 17233:2002

Finish adhesion	Min 5 N/10mm Min 2 N/10mm	ISO 11644 Dry adhesion Wet adhesion

Burning behaviour	Max 75mm/min	ISO 3795

Flexing endurance	100,000 cycles (no finish cracks)	EN ISO 5402:2002

Tear strength Tear strength	Min 35N Min 25N	Method 6 of BS 3144: 1968 EN ISO 3377-1:2002

Fogging	Min 90%	STD 1027.21711-3

Resistance to blocking	Specimens shall separate without lifting the weight and there shall be no visible damage to the surfaces.	BS 3434: Part 11
Tension strength & elongation	Min 12 N/mm² Between 35% to 60%	ISO 3376

Colour fastness to water spotting	Not worse than slight damage	EN ISO 15700

Abrasion	2000 cycles/CS 10/500gr No rupture of the leather finish	ISO 5470

Heat shrinkage	Max area change 5% @ 168h ± 0.5 at 93°C ± 2°C	EN ISO 17227

Migration staining	Min 4 grey scale	EN ISO 3377-1