SENTINEL Filter Guide This guide provides explanation to the type and fitting of the Alpha Solway Sentinel Filters as well as guidance on the appropriate filter selection for hazardous substances. It is essential that the correct filter is selected to provide full protection for the wearer, therefore this guide should be used in conjunction of the COSHH risk assessment (Control of Substances Hazardous to Health Regulations 2002). Filters are classified in relation to the type of hazardous substance(s) they can be used against – particles, gas/vapour, multi-gas or combined (particle and gas/vapour). Protects from non-toxic dusts and oil/water-based particulates. Protects against gases and vapours. Protects against particles, gases and vapours. HOW FILTERS WORK Particulate Filters are marked with a ‘P’ (Particulate) and a number which determines the level of protection: The Alpha Sentinel range consists of two P3 filters, P3S (Standard) and P3H (High capacity). Both filters are encapsulated, low profile filters containing pleated filter media. The pleats provides more surface area which lowers the breathing resistance and increases filtration capacity. High capacity offers more surface area than Standard, which means it lasts longer. Both P3 filters are tested for reusability (‘R’), allowing use for more than one shift (eight hours). Gas filters remove gases or vapours and are classed according to their capacity of how much of the contaminant they can hold and the type of substance they can be used against: Class 2 = Medium capacity Class 3 = High capacity combination The filters are also marked up with a letter and a colour to reference the type of substance they are suitable for (see ‘Filter types’ table). The Alpha Sentinel range consists of three gas filters, A1, A2 and ABEK1. The gas filters are snowstormfilled, ensuring a higher concentration of activated carbon, which means more efficient filtration. Combination filters are required for protection against particles, gases and vapours. The Alpha Solway Sentinel range include a particulate P3P filter, which is easily fitted over the gas filter, then clicked into position with the filter case provided with the mask. Combination filters

FILTER TYPES FILTER TYPE COLOUR DESIGNATION MAIN AREA OF APPLICATION Particles ‘R’ marking means that the particle filters are suitable for reuse against aerosols (several work shifts) Organic gases and vapours with boiling point >65°C Inorganic gases and vapours Sulphur Dioxide and other acidic gases and vapours Ammonia and organic ammonia derivatives HALF MASK FILTER GUIDE Sulphur Dioxide Sulphur Dioxide Brick Acid White Spirit Heat Paint Stripping Chemical Paint Stripping Powered Prep Manual Prep Spray – Solvent-based Brush – Solvent-based Water Based Fibres & Fibre Glass Asbestos Removal...

FILTER SELECTION V In order to ensure full protection from hazardous substances for the wearer, there are considerations that need to be understood to ensure the RPE and filter selection is adequate and suitable. Adequate: selecting the correct protection level for the hazard that reduces the wearer's exposure to the below required level as stated by HSE. Suitable: ensuring this selection does not impose further risks by assessing the working environment, task and wearer's freedom of movement. In order to determine if the RPE selection is appropriate, a HSE risk assessment under COSHH guidance...

FITTING INSTRUCTIONS Before use Only use the filter if the packaging is undamaged before first use and check the filter is clean and undamaged. Replace the filter if it is damaged and check the marking on the filter to ensure it is within a usable period. The filter type and class are marked on the filter. Ensure the correct filter is used, once the environment and contamination is known. Use For use only with approved Alpha Solway respiratory face-pieces (Alpha Solway FFM or Alpha Solway HM); refer also to face-piece user instructions (Alpha Solway FFM or Alpha Solway HM). Two filters must be...