Alpha Sentinel Replacement Filters
Alpha Sentinel Replacement Filters
Genuine replacement filters for Alpha Sentinel Full Face and Half Masks. All individual filter options are supplied in matching pairs, and every combination kit contains one gas-filter pair plus one P3P prefilter pair.
Always fit two matching filters of the same type and class. The correct filter must be selected for the identified hazard and used in accordance with the mask and filter instructions.
Choose the Correct Filter
P3H Direct-Fit Particulate Filters
High-capacity P3 particulate filters that connect directly to the mask. Designed for airborne particles and marked reusable (R) for use across more than one shift when permitted by the risk assessment and manufacturer instructions. P3H filters do not protect against gases or vapours.
P3P Replacement Prefilters
P3P particulate prefilters are for combination use with A1, A2 or ABEK1 gas filters. They fit over the gas filters using the retaining covers supplied with the Alpha Sentinel mask. P3P prefilters must not be fitted directly to the mask or used on their own.
A1 Gas Filters
Type A, Class 1 filters for specified organic gases and vapours with boiling points above 65°C. A1 filters do not provide particulate protection unless combined with P3P prefilters.
A2 Gas Filters
Type A, Class 2 filters for specified organic gases and vapours with boiling points above 65°C. A2 provides a higher capacity than A1. A2 filters do not provide particulate protection unless combined with P3P prefilters.
ABEK1 Gas Filters
Class 1 filters covering specified organic gases and vapours, inorganic gases and vapours, acid gases and vapours, ammonia and organic ammonia derivatives. ABEK1 filters do not provide particulate protection unless combined with P3P prefilters.
Combination Kits
Combination kits provide the appropriate gas-filter pair together with a pair of P3P particulate prefilters:
- A1 + P3P: one pair of A1 gas filters and one pair of P3P prefilters
- A2 + P3P: one pair of A2 gas filters and one pair of P3P prefilters
- ABEK1 + P3P: one pair of ABEK1 gas filters and one pair of P3P prefilters
Key Features
- Compatible with Alpha Sentinel Full Face and Half Masks
- Simple click-fit connection
- Compact, lightweight gas-filter design
- Pleated P3H filter media for increased surface area and low breathing resistance
- P3P prefilters add particulate protection to compatible gas filters
Fitting and Replacement
- Check that packaging is sealed and undamaged before first use.
- Check the filter marking and expiry date before use.
- Do not use damaged, contaminated or incorrectly fitted filters.
- Gas filters must be replaced when odour, taste or irritation indicates breakthrough, and no later than six months after the original packaging is opened.
- Particulate and combination filters must be replaced when breathing resistance becomes excessive.
Safety notice: Filter selection must be based on an appropriate COSHH risk assessment and the known contaminant, concentration and working conditions. Do not choose a filter by product name or application alone. If unsure, consult a competent respiratory-protection professional.
Manufacturer Resources
What our customers are saying
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These filters are for use with the Alpha Solway Sentinel full/half mask respirators. I have a half-mask that I use during my crafting. Whichever filters you’re using, they’re easy to affix & remove from the mask…
Even the P3P filters are easy enough to put into place onto any of the vapour filters, utilising the adaptors. The only real down side, if you can actually call it a “down side”, is that using the P3P filters in conjuction with the other vapour filters does increase the breathing [inspiration] resistance…
Corum –