ATAGO PAL-Easy ACID1 Instruction Manual

7301-E09
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Pocket Acidity Meter (Citrus)
Master Kit
PAL-Easy ACID1
Cat. No. 7301

Parts

LCD
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.
START Button
Press to take measurement.
R Button
Press to restore default settings
for the Offset Feature.
Battery Compartment
Place and remove batteries from
here.
Image is for explanation purposes only.
It may be different than the actual product purchased.
Contents
Main unit...1 Instruction Manual (this book)...1 AAA batteries...2 Measuring Spoon 1mL...1
Beaker 100mL...1 Digital scale...1（CAbout the Digital Scale）
mPlease remove the tape in the battery compartment before first use.
cThe measuring spoon is available from ATAGO. Part No. RE-39005 Measuring Spoon 1mL
ATAGO instruments are rigorously inspected to ensure each unit meets the highest standards of quality assurance.
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).
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>
Sample Purified water
55.00
1.10
Sample 1.10g Add purified water until the
total weight is 55.00g.

How to Select a Scale Number

Select scale number either 1 or 2 according to the acidity of the fruit juice sample.
1. 2. 3.
Press and hold the Select a Scale Number. Press the R button
R button for 5 to confirm the
Use the ZERO button
seconds (while the selection.
to move the number
unit is powered on).
upward.
Use the START button
to move the number
downward.
Scale Number display Scale Number display
1 2 2
2 years

Preparation

Zero-setting
1. 2.
Clean the sensor
with water. (with nothing on the sensor).
Dry the area with
QR code
tissues thoroughly.
R
Instruction Manual
Measurement

[1]Dilution

CAbout the Digital Scale
Sample Stage
cNecessary Materials : Digital scale, Beaker 100mL
Place sample on the sensor
Dilution ration
located at the center of the
When selecting Low Acidity Citrus scale (Scale Number 1)→1:50
sample stage.
When selecting High Acidity Citrus scale (Scale Number 2)→1:100
1. 2.
ZERO Button
Press the
POWER Button. the scale and zero set
Press to perform zero-setting.
(tare).
（Press the Zero-set
button (tare)）
Lanyard Hole
0.00

[2]Measuring the Acidity

1.
Apply some diluted sample.
At least 0.6mL

Cleaning

・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.
mHandle the sensor with care so as not to scratch it.

Addendum

Measuring Without using a Scale

A 1: 50 or 1:100 dilution can be prepared easily by using the attached measuring spoon and beaker.
[1]Dilution
cNecessary Materials : Measuring spoon 1mL, Beaker 100mL
1.
Using the attahced measuring spoon,
place a level spoonful (1mL) of sample in
the attached beaker.
Scale Number List
1 Low Acidity Citrus
(Acid 0.10 to 4.00%)
2 High Acidity Citrus
(Acid 2.50 to 8.80%)

Zero-setting and Measurement

mRecommended on a daily basis.
3.
Press the START button "000" will appear.
Measurement: not 0.00
－Zero-setting is required.－
Press the ZERO button
(with nothing on the
Flash
sensor).
Measurement: 0.00
20.4 ℃
Proceed to Measurement
0.0 0
3. 4.
Place the beaker on Pour 1.00g of sample into Add purified water
the beaker. until the total weight is
c Any amount of sample 50.00g or 100.00g.
can be made as long as the
dilution ration is 1:50 or 1:100.
Purified water
We recommend 1.00g of
sample to keep accuracy
consistent.
Sample
T
0.00
50.00
1.00
2.
Press the Measurement is displayed after "---."
START button.
The unit of Acid is %.
20.4 ℃
0.2 5
cThe measurement is the value of the sample
(stock-solution).
For approximate measurement only
2. 3.
Add purified water Gently stir.
to the beaker until the
total amout is 50
Proceed to
or100mL.
Sample
[2]Measuring
1ｍL 50ｍL
the Acidity
Dilution ration
When selecting Low Acidity Citrus scale
(Scale Number 1).
When selecting High Acidity Citrus scale
(Scale Number 2).

Checking with Reference Solution

When there is any doubt regarding accuracy of measurement results, adjust the reference value according to the following
procedure.
cThe reference solution is available from ATAGO.
Part No. RE-130004 Reference solution (0.04% Citric acid solution)
Checking with Reference Solution
20.4 ℃
1. 2. 3.
0 0 0 Clean the Press the ZERO
sensor with button (with nothing reference
water. on the sensor) to solution.
Light up
Dry the area zero-set. *Reference
with tissues solution
thoroughly. (0.04% (g/100g)
"000" will appear.
(Press the Citric acid
START button solution)
20.4 ℃
to turn on the
0 0 0
instrument.)
At least 0.6mL
Flash Light up

Calibration

6.
Apply the reference "CCC" will appear.
solution.
Turn on the
5.
Gently stir.
instrument. 20.4 ℃
Press the START and C C C
ZERO buttons
simultaneously.
Flash Light up
The following messages alert the user when an operation has failed.
Lo ・The battery is low.
A A A Acid
・The sensor was not empty when zero-setting
was attempted.
・Calibration was attempted with something other
than the calibration solution.
Measurement range Acid 0.10 to 4.00%
(Low Acidity Citrus scale)
Acid 2.50 to 8.80%
→1:50
(High Acidity Citrus scale)
10.0 to 40.0℃
→1:100
Resolution Acid 0.01%
0.1℃
Measurement accuracy Acid ±0.10% (0.10 to 1.00%)
Relative precision
±10% (1.01% or more)
±1℃
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
4. 5.
Apply the Press the START
button
Measurement:
Outside standard value range＊
Calibration is required.
Measurement:
Within standard value range＊
The instrument is calibrated
correctly.
20.4 ℃
2.4 7
(Ex: Scale Number 1)
*Standard Value List
1 Low Acidity Citrus 2.47％ ±0.25％
2 High Acidity Citrus 4.54％ ±0.45％
Error Messages
L L L Temperature
・The sensor temperature is below the temperature
range.
H H H Acid
・The sample measured outside the measurement range.
Temperature
・The sensor temperature is above the temperature
range.

Specifications

Measurement time Approx. 2 seconds
Automatic temperature 10 to 40℃
compensation range
Ambient temperature range 10 to 40℃
Backlight The backlight stays on for 30
seconds after any button is pressed.
Power supply Two (2) AAA alkaline batteries
International Protection IP65
Dimensions and weight 55(W)×31(D)×109(H)mm,
100g (main unit only)
2205K Printed in Japan