WPI EVOM3, Инструкция по эксплуатации

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EVOM3
World Precision Instruments 27
tip can stay immersed in alcohol (ethanol or isopropanol) not more than 30 minutes.
We recommend 15-20 minutes of immersion in ethanol/ isopropanol.
CAUTION : NEVER leave the electrode ( STX2 and STX2-PLUS ) in alcohol
(ethanol/isopropanol) for more than 30 minutes at a time. Continuously
soaking the electrode in alcohol will weaken the protective coating on the
electrode and shorten its life. A damaged electrode showing peeling of the
transparent coating will expose tissues to copper. An electrode showing signs of
peeling must be replaced.
CAUTION : Ammonia is NOT recommended, because silver chloride dissolves
in ammonia.
The STX2-PLUS electrodes require a 10-15 minute soak in a solution of 5% sodium
hypochlorite (undiluted household bleach) to revitalize the electrodes.
Sterilizing the STX2-PLUS Electrode
The STX2-PLUS electrodes are non-sterile as supplied. Acceptable low temperature steril-
ization methods for the electrodes include gamma irradiation and ethylene oxide gas (ETO).
CAUTION : Do NOT autoclave the electrode.
CAUTION : Do NOT use ionized hydrogen peroxide (H
2
O
2
).
CAUTION : Do NOT expose the electrodes to ultra-violet light, because UV light
decomposes silver/silver chloride electrodes.
CAUTION : Do not sand or abrade the electrode surfaces. A damaged
electrode will expose tissues to copper. An electrode showing deep scrateches
on the Ag-AgCl surfaces must be replaced.
CAUTION : Do not immerse the electrode head.
Rechloriding the Electrodes
The STX2-Plus electrode must be dipped into chlorine bleach (5% sodium
hypochlorite - WPI# TEER-CL ) on occasion to maintain the amount of Ag to AgCl
balance. Otherwise, the electrode will become unstable.
NOTE : Chloriding was not necessary for the STX2 , buit is required for the STX2-
PLUS it is. Sodium hypochlorite (bleach), which is used for chloriding, also acts as a
disinfectant. Use of sodium hypochlorite (bleach) is recommended as an optional
disinfectant with the STX2 . With STX2-PLUS , sodium hypochlorite (bleach) is essential
since it is required for chloriding.