BS EN ISO 11494:2019

What is ISO 11494 - Determination of platinum in platinum alloys about?  

ISO 11494 discusses the procedure for the determination of platinum. 

ISO 11494 describes an analytical procedure for the determination of platinum in platinum alloys with a nominal content up to 990 ‰ (parts per thousand), including alloys according to ISO 9202. 

Who is ISO 11494 - Determination of platinum in platinum alloys for? 

ISO 11494 on the determination of platinum in platinum alloys is useful for: 

• Jewellers 
• Jewellery designers 
• Quality control laboratory 
• ICP-OES analysts  

Why should you use ISO 11494 - Determination of platinum in platinum alloys?  

ICP-OES is used to establish a measuring program in which the intensities of the platinum emission lines and of the internal standard element yttrium can be measured simultaneously. 

ISO 11494 specifies the analytical procedure for the determination of platinum in platinum alloys using the ICP-OES method, which helps you to make attractive jewellery because this metal has shiny surfaces. 

International standard ISO 11494 provides analytical procedure and method for determination of platinum in platinum alloys is essential in order to control and improve the manufacturing of jewellery. 

The overall intent of ISO 11494 helps to make attractive jewellery, control, and improve the manufacturing of jewellery by providing ICP-OES method using an internal standard element. 

What is changed since the last update?  

BS EN ISO 11494:2019 supersedes BS EN ISO 11494:2016, which is withdrawn. 

BS EN ISO 11494:2019 includes some technical changes with respect to BS EN ISO 11494:2016. These include: 

• The definition of bracketing in Clause 3 has been removed 
• The recommended lines in Clause 4 have been removed 
• The preparation of the internal standard solution in 8.1 has been changed 
• The way of preparation by aliquots for both standard and sample solutions in 8.2 and 8.3 has been removed 
• Precisions about quantity of acids to be used in case of dissolution under pressure in 8.4 have been added