F-950 Instruction Manual rev. 11/26/2019
1554 NE 3
rd
Ave, Camas, WA 98607, USA
73
Phone: (360) 833-8835
www.felixinstruments.com
Replacing the Potassium
Permanganate Filter (KMnO
4
)
The Potassium Permanganate will expire after
prolonged use and can be identified when the
granules turn dark purple to brown. The small
black jar is the KMnO
4
filter, just unscrew the
bottom plate of the F-950 unit after removing
the battery cap, unscrew the filter, screw in the
replacement and you’re done! Screw back into
place the bottom plate and finally the battery
cap.
Summary of Contents for F-950
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