Extech EC500 pH measurement equipment 0 - 14 pH EC500 User Manual
Product codes
EC500
EC500-EU V2.2 8/05
12
Cleaning Recommendations
When cleaning the probe, take care not to scratch or damage the sensing surface or the
platinized electrode surfaces.
platinized electrode surfaces.
Contaminant Cleaning
Solution
Instructions
Water soluble substances
Deionized water
Soak or scrub with a soft
brush. Recondition in 4 or 7
buffer for 1 hour.
brush. Recondition in 4 or 7
buffer for 1 hour.
Grease & Oil
Warm water and household
detergent
detergent
Soak or scrub with a soft
brush, maximum of 10
minutes. Rinse thoroughly
with DI water, recondition in
4 or 7 buffer for 1 hour.
brush, maximum of 10
minutes. Rinse thoroughly
with DI water, recondition in
4 or 7 buffer for 1 hour.
Heavy grease & Oil
Alcohol
Maximum of 5 minute soak,
scrub with a soft brush.
Rinse thoroughly with DI
water, recondition in 4 or 7
buffer for 1 hour.
scrub with a soft brush.
Rinse thoroughly with DI
water, recondition in 4 or 7
buffer for 1 hour.
Lime and hydroxide
coatings
coatings
10% acetic acid
Soak until coating dissolved,
maximum of 5 minutes. .
Rinse thoroughly with DI
water, recondition in 4 or 7
buffer for 1 hour.
maximum of 5 minutes. .
Rinse thoroughly with DI
water, recondition in 4 or 7
buffer for 1 hour.
Please Note: Since the EC500 does not have a refillable reference electrolyte chamber, it is
important not to soak the electrode in the above solutions for more than the recommended
times. To do so may cause a reference potential shift, which will cause degradation in
performance or failure.
important not to soak the electrode in the above solutions for more than the recommended
times. To do so may cause a reference potential shift, which will cause degradation in
performance or failure.