files in this series:

• R1 - UK Standard Assigned Protection Factor 4 (APF 4) [47kb]
• R2 - UK Standard Assigned Protection Factor 10 (APF 10) [48kb]
• R3 - UK Standard Assigned Protection Factor 20 (APF 20) [48kb]
• R4 - UK Standard Assigned Protection Factor 40 (APF 40) [211kb]
• R5 - Breathing apparatus with UK Standard Assigned Protection Factor 40 [47kb]
• R6 - UK Standard Assigned Protection Factor 2000 (APF 2000) [47kb]