EN 420: 2004- General Requirements for protective gloves.
It’s a general requirement for manufacturing most type of protective gloves and correct use of PPE. It includes the general construction of Gloves, Ergonomics, Dexterity, Sizing, Product marking, Packaging information & Fluid & Electrostatic properties.


BS EN ISO 21420:2019 Protective gloves – general requirements and test method
A new standard is about to be published; BS EN ISO 21420:2019 Protective gloves - general requirements and test method, and there are some key things organizations placing protective gloves on the market need to be aware of.
Manufacturers of PPE need to ensure that the materials from which their products are made do not adversely affect the health or safety of users. The publication of the new glove standard, EN ISO 21420 which will replace EN 420:2003+A1:2009 builds on this and responds to the growing trend in standardization to address the topic of "innocuousness".
It also addresses the requirements of the EU PPE Regulation as ISO 21420 helps address the Essential Health and Safety aspects of Annex II, where PPE must be made so that it’s free of inherent risks and nuisance factors. 
As a manufacturer or distributor of protective gloves you need to be aware of these changes and act now. BSI can help you to understand your obligations.