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Home > Quality Control > Lab Testing > Wood Flooring
  
  
  
  

NATURAL (OXIDIZING) OIL COATING PERMANENT STAINING RISK FACTOR PRIVATE STANDARD

General:

  1. This private standard has been developed with the help of natural oil coating producers in order to assess the permanent staining risk of different natural oil applications
  2. Natural oil surfaces should be tested minimum 10 days after the oil application has been completed. If the natural oil surface is being dried in a high relative humidity environment, a longer drying time may be necessary
  3. Natural oiled floors’ stain resistance will depend not only on the particular natural oil and its application, but also on wood species, treatment, sanding, brushing, etc.
  4. As a matter of principle, natural oil finishes have a low stain-resistance. Each company along the production-distribution line is responsible for informing its clients about this important point

1. TOOLS
1.1 Appropriate lighting
1.2 Clean, soft cloth
1.3 9 test reagents
1.4 Concave glass covers
1.5 Water
1.6 Maintenance oil (used after a wood cleaner if necessary)

REAGENT # REAGENT APPLICATION
1 Tap water (80°) 2 drops (6 mm) and cover with watch glass
2 Instant coffee 4% (80°) As above
3 Black tea (80°) As above
4 Mustard As above
5 Cola As above
6 Red Berry Juice As above
7 Red Wine As above
8 Ethanol (75% solution) As above
9 Vinegar (2.5% solution) As above

2. SAMPLING
One sample about 400 mm x 100 mm x thickness or another size allowing placement of the 9 test reagents (reagents shall be placed no less than 25 mm apart)

3. ENVIRONMENTAL CONDITIONS
Temperature: 23 (+/- 2) °C
Relative humidity: 50 (+/-) 5%

4. TESTING PROCEDURE
4.1 Clean the sample surface, with the help of the soft cloth

4.2 Place 6 mm2 of each reagent on the sample’s surface and then cover the reagents with clearly marked glass covers. Move each glass cover such that the covered reagent comes in contact with the glass rim and the reagent is both covered and uncovered where the watch glass sits. The entire glass cover rim shall be wetted with the reagent



4.3 Wait for 1 hour (ethanol solution, vinegar solution) or 16 hours (other 7 reagents)
4.4 Use a damp cloth to remove the reagents

4.5 Let the sample dry for at least 2 hours

4.6 In case there are stains, apply a wood cleaner (increase the % of wood cleaner to water in case of need); once the surface is dry, if necessary, slightly sand (along the grain) with fine sand paper, and then apply maintenance oil. If necessary, have the sample rest overnight and re-apply maintenance oil the next day






4.7 Any remaining stain shall be rated 1 (minor stain) or 3 (obvious stain)
4.8 Add up the individual reagent ratings to reach the permanent staining risk factor (0 risk factor being ideal and 27 risk factor being the worst possible)

Option:
In case of natural oils with 0% synthetic material, the 16 hours above can be replaced by 2 hours. If this option is used, the test report should mention exposure was just 2 hours

5. ASSESSING TEST RESULTS
Per the contract (the contract and testing report should specify the maintenance product)

 
  
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