ISO9001 Certificate
Castle Group Ltd is registered to BS EN ISO 9001:2008 and a copy of our certificate is available for download here. We have been assessed by National Quality Assurance Limited and our scope of approval is for the design, manufacture, hire, service and calibration of sound level and vibration instruments. Also, provision of related training and consultancy activities.
Castle Group Quality Management System
Download a copy of the Castle Group BS EN ISO 9001:2008 Certificate:
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BS EN ISO 9001:2008 specifies requirements for a quality management system where an organization
1. needs to demonstrate its ability to consistently provide product that meets customer and applicable regulatory requirements, and
2. aims to enhance customer satisfaction through the effective application of the system, including processes for continual improvement of the system and the assurance of conformity to customer and applicable regulatory requirements.
All requirements of this International Standard are generic and are intended to be applicable to all organizations, regardless of type, size and product provided.
Where any requirement(s) of this International Standard cannot be applied due to the nature of an organization and its product, this can be considered for exclusion.
Where exclusions are made, claims of conformity to this International Standard are not acceptable unless these exclusions are limited to requirements within clause 7, and such exclusions do not affect the organization’s ability, or responsibility, to provide product that meets customer and applicable regulatory requirements.
For more information regard this standard visit the ISO Website.



SMEs and larger companies are required to cover legislation and laws to protect workers, visitors and staff from noise, vibration, dust, gas and other dangers. We have a series of guides to help find the right information, training and level meters.
It is vital that level meters and monitoring equipment is checked regularly and Castle Group provide repair, servicing and calibration for all types of health and safety instruments, not just instruments made by us but other manufacturers.
The quick and easy way to monitor worker's exposure to the risks of hand-arm vibration using the HAVmeter system. Featuring simple to use vibration meters attached to power tools. Instant warnings of excessive vibration exposure and detailed monitoring of tool usage. 