BS EN 152:2011

What is BS EN 152 - Preservative treatment against blue stain in wood about? 

 BS EN 152 is a European standard that discusses the effectiveness of a preservative treatment against blue stain in wood in service.  

BS EN 152 specifies a method which is only suitable for testing preparations and systems which are intended to prevent the occurrence of blue stain fungi in wood in service. BS EN 152 is not suitable for assessing the temporary preventive effectiveness of anti-stain preservatives on round wood or on freshly cut wood. The method is not intended for the determination of the fungicidal properties of the surface coating applied to the wood after the priming coat. 

BS EN 152 lays down a method for determining the effectiveness of a preparation applied by e.g., brushing, spraying, spraying tunnel, dipping or vacuum, and pressure treatments resulting in equivalent retention of product in preventing the development of blue stain fungi in wood in service. BS EN 152 is also applicable where a primer paint is used in conjunction with the preservative system1). 

BS EN 152 is applicable to the following types of preparations or systems: 

• Type A: fungicidal preparations with or without pigment, used in conjunction with unspecified varnishes or paint coatings 

or 

• Type B: fungicidal preparations with or without pigment, used in conjunction with specified varnishes or paint coatings 

or 

• Type C: fungicidal preparations with or without pigment, used without any subsequent paint, varnish or other coating 

Note: It is also possible to test the effectiveness in preventing blue stain in service of a combined protective system which involves the application of one preparation by a penetrating treatment technique followed by a subsequent application of a different preparation by a superficial treatment method. 

Who is BS EN 152 - Preservative treatment against blue stain in wood for? 

BS EN 152 on preservative treatment against blue stain in wood is useful for: 

• Wooden furniture manufacturers    
• Manufacturers using wood as raw materials    
• Wooden products suppliers   
• Testing laboratories of wood preservatives  
• Quality control personnel    
• Health and safety department 

Why should you use BS EN 152 - Preservative treatment against blue stain in wood?  

BS EN 152 permits the determination of the effectiveness of undiluted preservatives and may also be used to test preparations in which the proportions of the individual components (active ingredients) have been varied and so establish for the active ingredients the limit of their effectiveness. BS EN 152 is used to assess the value of the protection, taking into account the method of application and in particular the supplier's specifications. 

BS EN 152 describes a laboratory method of testing which gives a basis for assessment of the effectiveness of a wood preservative, which is intended to prevent the occurrence of blue stain fungi in wood in service. This will help you to determine the concentration at which the product prevents the development of infestation from blue stain fungi. 

BS EN 152 aid to take suitable precautions to isolate and separate, as far as possible, operations involving chemical products, other products, treated wood, laboratory apparatus, and clothing with suitable precautions to use separate rooms, areas within rooms, extraction facilities, conditioning chambers, and special training for personnel. 

What is changed since the last update?  

BS EN 152:2011 supersedes EN 152-1:1988, EN 152-2:1988, which is withdrawn. 

Significant technical differences between BS EN 152:2011 and EN 152-1 and EN 152-2:1988 are as follows: 

• Introduction of a new harmonized specification for the test specimens used in the diverse biological tests 
• Merging of Part 1 relating to the brushing procedure and Part 2 concerning the application by methods other than brushing 
• Taking into account of the terms given in EN 1001-1 and the definitions of EN 1001-2 
• Introduction of an informative Annex to take account of consideration for minimization of environmental and health hazards caused by the use of this biological test