Quality and Reliability

Gas Sensing Solutions set high standards to provide the best quality products and services. Each CO₂ sensor undergoes rigorous testing at each stage of the production process.

Quality Statement

The objective of the GSS quality management program is to ensure that all aspects of our business surpass the requirements of our customers, from the intrinsic quality of the product to all aspects of customer support. 

Our quality system is centred on proven industry standards. GSS is certified to ISO 9001:2015 Quality Management Systems Requirements. This system is central to how we manage our business, from product inception through to product delivery and support. It also extends to all our suppliers, who are an integral part of our business. Our sub-contractors are ISO 9001 and ISO 14001 certified. Our aim is to ensure that we are trusted by our customers to provide high levels of quality and reliability for our products.

We work very closely with our customer to ensure maximum clarity when it comes to understanding the correlation between parametric data sheet performance and real-life performance in the field. We want our customers to clearly understand the benefits of using our products before they get them. This is our commitment; to not only the quality of the product but also the quality of the relationship between ourselves and the customer.

GSS products are designed, manufactured in tested using proven practice. Each sensor is exposed to multiple gas concentrations and multiple different temperatures to ensure full function operation across its entire operating range. Knowing that each sensor is 100% tested and inspected puts our customers’ minds at rest when it comes to the determining the quality of the product. For extra security, every product can be supplied with a certificate of conformance, confirming the individual performance parametric of the GSS sensor.

Quality Policy

GSS is committed to: 

  • Providing customers with a high quality product which meets their requirements and is delivered in a timely manner.
  • Operating the business to the systems required by ISO 9001:2015.
  • Enhancing the skills of management and staff through review and actively pursuing an on-going training policy, the objectives of which are to prepare staff to perform their work more effectively and to continually develop their skill set.
  • Promoting the culture of continual improvements and the philosophy of getting things “right first time”.
    Promoting the quality management systems and ensuring implementation is achieved by internal auditing, management review, and corrective and preventative actions.
  • Everyone is responsible for quality within the company and for maintaining high standards.

Management System

The GSS quality management system applies to all products, services, and activities that affect the customer. 

GSS has a series of business processes.

  • Develop, manufacture, test, and deliver products and related services
  • Meet customer orders, requests, deadlines, and specifications
  • Meet regulations, environmental expectations, and industry standards
    Operate an efficient business
  • Achieve the corporate strategy and goals


The business processes that comprise the quality management system are listed here.

Management Responsibility

  • Management Review
  • Document Control
  • Records Control

Resource Management

  • Annual Plan
  • Capital Equipment
  • Facilities, Communication, Data Processing
  • Human Resources and Training

Product Realisation

  • Design and Development
  • Market Requirements/ Business Plan
  • Product Development Processes
  • Product Qualification and Readiness
  • Production Planning Processes
  • Configuration Management, Information, Traceability
  • Contract and Order Entry Administration
  • Business Planning
  • Supplier Planning
  • Supplier Management

Measurement, Analysis, and Continual Improvement

  • Customer Satisfaction
  • Internal Audit
  • Product and Process Monitor
  • Nonconformance Control
  • Corrective Action
  • Preventive Action

Environmental Compliance

GSS is committed to protecting the environment by reducing the number of hazardous substances in our products. 

GSS is committed to providing sensors that meet environmental regulations, including EU Directive 2002/95/EC and subsequent amendments of the European Parliament and of the Council of the use of certain hazardous substances in electrical and electronic equipment (EEE) and REACH (Registration, Authorisation and Restriction of Chemicals, European Union Regulation (EC) 1907/2006).

GSS Ltd. certifies that its products are compliant unless otherwise stated, without exemption with the latest European Union (EU) Directive 2015/863/EU, Restriction of the use of Hazardous Substances in Electrical and Electronic Equipment (RoHS 3) and do not contain any Substances of Very High Concern (SVHC) currently on the Candidate List above the threshold limit as defined by Article 33, or any substance restricted in Annex XVII, of EU Regulation (EC) No. 1907/2006 on Registration, Evaluation, Authorisation and Restrictions of Chemicals (REACH).

All components manufactured by GSS contain less than the permitted levels of hazardous and controlled substances as per the requirements of RoHS.

Certificates of conformance for compliance to RoHS from our products are available on request from GSS.

Product Change Notification Policy

As part of our product change process, GSS will commit to notification of any change that may affect the fit, form, or function, or adversely impact quality or reliability.

Definition of Fit: The shape, size, dimension, mass, weight, and other parameters that uniquely characterise an item.

  • Any change in the manufacturing process that is likely to impact the parametric performance and properties of the component
Definition of Form: The ability of an item to physically interface or interconnect with or become an integral part of another item.
  • Changes to the size, materials, or connections to the component

Definition of Function: TThe action or actions that an item is designed to perform

  • Changes to the parametric performance
  • Changes to the electrical behaviour of the sensor

Quality and Reliability

  • Changes to the component that are likely to have an impact on lifetime

Stage 1: Notification Information

GSS will provide the following information a minimum of 90 days before the implementation of any notifiable change unless circumstances beyond our control prove preclude this.

  • Detailed Description of Reason for Change
  • PCN Number
  • Product Affected
    Impact on Fit, Form, Function, Quality & Reliability
  • Qualification Plan & Results (Qualification schedule if results are not available)
  • New Sample Availability Date
  • Proposed Date of Production Shipment


If samples are needed for your evaluation of a change, we require that this request be made within 30 days of the notification.

Stage 2: Product Change Implementation

Due to logistical and supply chain reasons, it may not be practicable to guarantee that deliveries of the old product will cease after the proposed date of introduction of the new product.

Please contact us at info@gassensing.co.uk if you have any questions about the GSS product change policy.


ISO9001 Certificate

AN003 RoHS and REACH Compliance, Revision 1.3