1.
Apply some diluted sample.
1.
Press the
POWER Button.
5.
Gently stir.
50.00
1.00
0.00
T
0.00
ATAGO instruments are rigorously inspected to ensure each unit meets the highest standards of quality assurance.
m
Please remove the tape in the battery compartment before first use.
c
The measuring spoon is available from ATAGO.
Part No. RE-39005 Measuring Spoon 1mL
Parts
Contents
R
Instruction Manual
Main unit…1 Instruction Manual (this book)…1 AAA batteries…2 Measuring Spoon 1mL…1
Beaker 100mL…1 Digital scale…1（
C
About the Digital Scale）
Preparation
m
Recommended on a daily basis.
1.
Clean the sensor
with water.
Dry the area with
tissues thoroughly.
Zero-setting
2.
Press the START button
(with nothing on the sensor).
Zero-setting and Measurement
[1]Dilution
C
About the Digital Scale
c
Necessary Materials : Digital scale, Beaker 100mL
[2]Measuring the Acidity
c
The measurement is the value of the sample
(stock-solution).
2.
Press the
START button.
Measurement is displayed after “---.”
The unit of Acid is %.
2.
Place the beaker on
the scale and zero set
(tare).
（Press the Zero-set
button (tare)）
3.
Pour 1.00g of sample into
the beaker.
c
Any amount of sample
can be made as long as the
dilution ration is 1:50. We
recommend 1.00g of sample
to keep accuracy consistent.
4.
Add purified water
until the total weight is
50.00g.
Sample
Purified water
Measurement
・Wipe off the sample. Clean the sensor with water.
Dry the area with tissues thoroughly.
・Clean oily residues with mild soap, and then, rinse with water.
m
Handle the sensor with care so as not to scratch it.
Cleaning
At least 0.6mL
Checking with Reference Solution
1.
Clean the
sensor with
water.
Dry the area
with tissues
thoroughly.
(Press the
START button
to turn on the
instrument.)
c
The reference solution is available from ATAGO. Part No. RE-130004 Reference solution (0.04% Citric acid solution)
5.
Calibration is required.
Calibration
6.
Apply the reference solution.
Turn on the instrument.
Press the START and ZERO
buttons simultaneously.
2.
Press the ZERO
button (with nothing
on the sensor) to
zero-set.
“000” will appear.
4.
Press the
START button
3.
Apply the reference
solution.
*Reference solution
(0.04% (g/100g) Citric
acid solution)
At least 0.6mL
“CCC”
will appear.
Flash
Light up
When there is any doubt regarding accuracy of measurement results, adjust the reference value according to the following procedure.
Checking with Reference Solution
Flash
Light up
Addendum
Measuring Without using a Scale
For approximate measurement only
c
Necessary Materials : Measuring spoon 1mL, Beaker 100mL
[1]Dilution
Sample
1ｍL
3.
Gently stir.
50ｍL
1.
Using the attahced measuring spoon,
place a level spoonful (1mL) of sample in
the attached beaker.
Proceed to
[2]Measuring
the Acidity
2.
Add purified water
to the beaker until the
total amout is 50mL.
Image is for explanation purposes only.
It may be different than the actual product purchased.
0.2 5
20.4
℃
3.
Proceed to Measurement
－Zero-setting is required.－
Press the ZERO button
(with nothing on the
sensor).
“000” will appear.
Measurement: not 0.00
Measurement: 0.00
Flash
Light up
0.0 0
20.4
℃
0 0 0
20.4
℃
Measurement Value
Automatic Temperature Compensation
Discrepancies with titration
Due to the difference in measurement principles, readings
from the instrument may not match up exactly with the
readings by titration for certain samples. However,
correlation between the two testing methods can be seen.
For addition/subtraction (b) [Range: -5.00 to 5.00]
0.8
0.7
0.6
0.5
0.4
0.35
0.75
0.65
0.55
0.45
（
ｙ
）
（ⅹ）
An example of conversion chart
ｙ = a x + b
ｙ：titration readings
x：The instrument readings
a：coefficient (multiplication)
b：addition/subtraction number
Acid: Offset Function
Specifications
⇑
Access now
In just-a-minute
1. It requires
only 1 minute!
Simply by answering questions, warranty period is extended from 1 year
to 2 years.
2. ATAGO Logger NFC can also be downloaded at the same time.
(The registration page can be accessed from ATAGO website.)
From
1
year to
2
years
Free Extended Warranty
Offset feature use
Create a conversion chart between the two testing methods.
Measurement range
Acid 0.10 to 0.30%
10.0 to 99.9℃
Resolution
Acid 0.01%
0.1℃
Measurement accuracy
Acid ±0.10%
±1℃
Measurement time
Approx. 2 seconds
Backlight
The backlight stays on for 30 seconds after any button is pressed.
Output
NFC Forum Type 4 Tag ISO/IEC 14443 Type A
Output category
Date Time,
Acidity [%], Temp [degC]
Acidity scale
(e.g.) 2019/01/17 09:30:45, 0.24 21.3
Maximum number of data history
100
Automatic temperature compensation range
10 to 40℃
Ambient temperature range
10 to 40℃
International Protection class
IP65
Power supply
Two (2) AAA alkaline batteries
Dimensions and Weight
55(W)×31(D)×109(H)mm , 100g (main unit only)
The instrument
is calibrated
correctly.
Measurement: not 0.20 (±0.10) Acid
Measurement: 0.20 (±0.10) Acid
Master Kit
Cat. No. 7391
7391-E04
Pocket Acidity Meter (
Milk
)
This unit measures and determines the acidity through electrical conductivity.
Lactic acid is the primary acid found in Milk.
The instrument measures the total acidity in a sample and converts it into lactic acid concentrations.
The Automatic Temperature Compensation (ATC) feature is based on temperature detected by the thermo sensor located
near the sensor area.
ATC may not work correctly when the temperature of the sensor area is not the same as the actual temperature of the
sample. When measuring a hot or cold sample, let it sit on the sensor for approximately 20 seconds and measure, or take
multiple readings until measurements become stable.
PAL-Easy ACID91
Displays the measured values,
sensor temperature, and battery
indicator.
The instrument will turn itself off
after 2 minutes of inactivity.
To manually turn it off, hold down
the START button for more than
2 seconds.
Press to perform zero-setting.
Place sample on the sensor
located at the center of the
sample stage.
Press to take measurement.
Place and remove batteries from
here.
Press to restore default settings
for the Offset Feature.
LCD
START Button
R Button
Battery Compartment
Sample Stage
ZERO Button
Lanyard Hole
Sample Preparation Tips
・Sample dilution
Any amount of sample can be made as long as the dilution ratio is 1:50. We recommend 1.00g of sample to
keep accuracy consistent.
<example>
Add purified water until the
total weight is 55.00g.
1.10
Sample
Sample 1.10g
Purified water
55.00
0.20
20.4
℃
CCC
20.4
℃
000
20.4
℃
1.
Hold down
ZERO while it is
turned on.
(While the measured
value is displayed)
“
b
” will appear
4.
Enter the addition/subtraction
number.
The 3rd digit: 0 to 9
The 2nd digit: 0 to 9
The 1st digit: 0 to 5
・The measurement range is shifted according to the offset settings.
・Screen images when offset is on.
After zero-setting with air
For coefficient (a) [Range: 0.50 to 5.00]
7.
Press
START to
confirm the
coefficient.
For default
Press the R button while setting up the
Off-Set feature.
6.
Enter the coefficient.
ZERO to change
the number.
START to confirm
and move to the
next digit.
Factory default value
Addition/subtraction
(b) 0.00
Coefficient
(a) 1.00
3.
Press START
to confirm.
5.
Press START
to confirm the
addition/subtrac
tion number.
No plus sign will be
displayed.
For addition, only “b”
will appear.
Coefficient (a) will
appear.
Addition/subtraction
(b) will appear.
2.
Press ZERO to
select either
addition (+) or
subtraction (-).
ZERO to change
the number.
START to confirm
and move to the
next digit.
0.0 0
-b
-b
-b
0.0 0
-b
1.0 0
a
0 F S
- - -
DFS
0.3 0
20.4
℃
1.0 0
a
E n d
a
0fs
0.0 0
b
1.0 0
a
E n d
The 3rd digit: 0 to 9
The 2nd digit: 0 to 9
The 1st digit: 0 to 5
"End" will appear.
<example>
Offset “b” = addition of 0.30
During measurement
The following messages alert the user when an operation has failed.
Temperature
・The sensor temperature is below the temperature
range.
L L L
Acid
・The sensor was not empty when zero-setting
was attempted.
・Calibration was attempted with something other
than the calibration solution.
A A A
Acid
・The sample measured outside the measurement range.
Temperature
・The sensor temperature is above the temperature
range.
H H H
・The battery is low.
Lo
Error Messages
2105K Printed in Japan
Instrument
The instrument measures the acidity (%) in the 1:50 dilution of a sample that is diluted with purified water.
The measurement value is the acidity (%) of the undiluted sample (stock-solution).
