Extech instruments PH100, RE300, PH110 User Manual
User Guide
TM
ExStik
pH (PH100 & PH110) and ORP (RE300)
Waterproof Series Pens
Patent Pending
Getting Started
• Remove the cap from the bottom of the ExStikTM to expose the electrode bulb and
reference junction
• Before first use or after storage, soak the electrode (with its cap removed) in a pH 4
solution for about 10 minutes (PH100 only)
• White KCL crystals may be present in the cap. These crystals will dissolve in the soak or
they can be simply rinsed with tap water
• Always calibrate close to the expected measurement value
• Twist off the battery compartment cap to access the battery tab; remove this plastic tab
before first use
• To preserve Electrode life keep the sponge in the protective cap soaked with a pH 4
solution (PH100), deionized, distilled water (RE300) when not in use (store vertically)
Specifications
Display Multifunction LCD with Bargraph
Operating conditions 32 to 122
pH Range and Accuracy 0.00 to 14.99 / ± 0.01pH typical
Temp. Compensation Automatic from 32 to 194
Compensation Accuracy ± 0.9
ORP Range / Accuracy ± 999mV / ± 4mV
Temperature Range 23 to 194
Temperature Resolution 0.1
Temperature Accuracy ± 1.8
± 5.4
Measurement storage 15 tagged (numbered) readings
Power Four (4) SR-44 button batteries (See note on page 6)
Low battery indication ‘BAT’ appears on the LCD
Auto power off After 10 minutes of inactivity
Battery Life 200 to 400 tests, assuming test time of < 10 minutes and use of
SR44 silver oxide batteries. Use of LR44 alkaline will reduce
battery life.
o
F (0 to 50oC) / < 80% RH
o
o
F (0.5oC)
o
F (-5 to 90oC)
o
up to 99.9 then 1o thereafter
o
F / 1oC [from 23 to 122oF (-5 to 50oC)]
o
F / 3oC [from 122 to 194oF (50 to 90oC)]
F (0 to 90oC)
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ExStikTM (PH100, PH110, & RE300) Version 2.6 02/04
ExStikTM Description
1. Battery compartment cap
2. LCD Display
3. MODE button
4. CAL button
5. ON/OFF button
6. Electrode collar
7. Electrode (refillable on PH110)
(Electrode cap is not shown)
ExStikTM Display
1. Bargraph reading
2. Measurement reading
3. BAT (low battery) and
HOLD (data hold) indicators
4. Temperature display
5. Bargraph scale designations
6. Units of measure
7. Calibration indicators
8. RENEW and CAL indicators
1
2
3
4
5
6
7
5
6
7
8
1
2
3
4
pH Overview
pH is a unit of measure (ranging from 0 to 14pH) indicating the degree of acidity or alkalinity
of a solution. pH tests are the most commonly performed measurements in water analysis,
using the hydrogen ion activity of a solution to determine acidity or alkalinity. Solutions with
a pH less than 7 are considered acidic, solutions with a pH higher than 7 are known as
bases, and solutions with a pH of exactly 7 are neutral.
The pH scale is logarithmic so, for example, if sample A is 1 pH less than Sample B, this
means that Sample A is 10 times more acidic then Sample B. A difference of 1 pH
represents a ten-fold difference in acidity.
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ExStikTM (PH100, PH110, & RE300) Version 2.6 02/04
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