DOC022.97.

90639

DR300
09/2021, Edition 5

User Manual
Manual de usuario
Manuel d'utilisation
Manual do Usuário
用户手册
使用手冊
ユーザーマニュアル
사용 설명서
คู่มือผู้ใช้
 Table of Contents
English .................................................................................................. 3
Español ............................................................................................... 25
Français .............................................................................................. 49
Português ............................................................................................ 74
中文 ..................................................................................................... 97
繁體中文 ............................................................................................ 116
日本語 ............................................................................................... 136
한국어 ............................................................................................... 158
ไทย ..................................................................................................... 180

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Table of Contents
1 Specifications on page 3 7 Show measurements on page 15
2 General information on page 4 8 Calibration on page 15
3 Install the batteries on page 7 9 Maintenance on page 20
4 User interface and navigation 10 Troubleshooting on page 21
on page 8 11 Replacement parts and
5 Set the time on page 10 accessories on page 24
6 Do a test on page 11

Section 1 Specifications
Specifications are subject to change without notice.
Specification Details
Dimensions (W x H x D) 6.9 x 15.7 x 3.4 cm (2.7 x 6.2 x 1.3 in.)
Enclosure IP67, waterproof at 1 m (3.3 ft) for 30 minutes when
battery compartment is closed and locked.
Light source Light emitting diode (LED)
Detector Silicon photodiode
Display LCD with backlight
Weight 0.25 kg (0.55 lb)
Power requirements 4 AAA batteries; approximate life of 5000 tests (use of
backlight decreases this number)
Rechargeable batteries are not recommended.
Operating environment 0 to 50 °C (32 to 122 °F), 0 to 90% relative humidity
non-condensing
Storage temperature –20 to 55 °C (–4 to 131 °F), 0 to 80% relative humidity
non-condensing
Wavelength Fixed wavelength ±2 nm, different for each model
Filter bandwidth 15 nm
Absorbance range 0 to 2.5 Abs
Sample cell 25 mm (10 mL) and 1 cm (10 mL)
Data storage Last 50 measurements

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Specification Details
Bluetooth® 1 Bluetooth® is on when the optional Hach
Communication Dongle is installed.
Certifications CE
Warranty 1 year (EU: 2 years)

Section 2 General information

In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or
omission in this manual. The manufacturer reserves the right to make
changes in this manual and the products it describes at any time,
without notice or obligation. Revised editions are found on the
manufacturer’s website.
2.1 Safety information
The manufacturer is not responsible for any damages due to
misapplication or misuse of this product including, without limitation,
direct, incidental and consequential damages, and disclaims such
damages to the full extent permitted under applicable law. The user is
soley responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible
equipment malfunction.
Please read this entire manual before unpacking, setting up or
operating this equipment. Pay attention to all danger and caution
statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not
impaired. Do not use or install this equipment in any manner other than
that specified in this manual.

1 The Bluetooth® word mark and logos are registered trademarks

owned by the Bluetooth SIG, Inc. and any use of such marks by
HACH is under license.

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2.1.1 Use of hazard information
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided,
will result in death or serious injury.

WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided,
could result in death or serious injury.

CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate
injury.

NOTICE
Indicates a situation which, if not avoided, may cause damage to the
instrument. Information that requires special emphasis.

2.1.2 Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or
damage to the instrument could occur if not observed. A symbol on the
instrument is referenced in the manual with a precautionary statement.
This symbol, if noted on the instrument, references the instruction
manual for operation and/or safety information.

Electrical equipment marked with this symbol may not be disposed

of in European domestic or public disposal systems. Return old or
end-of-life equipment to the manufacturer for disposal at no charge
to the user.

2.1.3 Certification
Canadian Radio Interference-Causing Equipment Regulation,
ICES-003, Class B:
Supporting test records reside with the manufacturer.
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.

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Cet appareil numérique de classe B répond à toutes les exigences de
la réglementation canadienne sur les équipements provoquant des
interférences.
FCC Part 15, Class "B" Limits
Supporting test records reside with the manufacturer. The device
complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:

1. The equipment may not cause harmful interference.

2. The equipment must accept any interference received, including
interference that may cause undesired operation.

Changes or modifications to this equipment not expressly approved by

the party responsible for compliance could void the user's authority to
operate the equipment. This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant to Part
15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at their expense.
The following techniques can be used to reduce interference problems:

1. Move the equipment away from the device receiving the

interference.
2. Reposition the receiving antenna for the device receiving the
interference.
3. Try combinations of the above.

2.2 Product overview

This instrument is a portable filter photometer used for testing water.
Note: This instrument has not been evaluated to measure chlorine and
chloramines in medical applications in the United States.

2.3 Product components

Make sure that all components have been received. Refer to Figure 1.
If any items are missing or damaged, contact the manufacturer or a

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sales representative immediately. Figure 1 is an example and shows
the parts supplied with LPV445.99.00110. Other instruments come with
different components.

Figure 1 Product components

1 DR300 5 Storage case

2 AAA alkaline batteries 6 Reagents
3 Sample cells, 25 mm (10 mL), 7 Hach Communication Dongle
glass (optional, supplied separately)
4 Sample cells, 1 cm (10 mL), plastic

Section 3 Install the batteries

WARNING
Explosion hazard. Incorrect battery installation can cause the
release of explosive gases. Be sure that the batteries are of the
same approved chemical type and are inserted in the correct
orientation. Do not mix new and used batteries.

Refer to Figure 2 to install the batteries. Then, push to set the

instrument to on.

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 Figure 2 Install the batteries

1 Coin 3 Plastic insert for dongle2

2 Battery cover

Section 4 User interface and navigation

4.1 Keypad description
Figure 3 shows the keypad and gives the key functions.

2 Only remove the plastic insert to install the Hach Communication

Dongle. Refer to the installation instructions supplied with the
dongle.

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Figure 3 Keypad

1 Range key: Selects the 4 Backlight key: Sets the backlight

measurement range (e.g., LR or to on and off.
HR). In menu mode, scrolls down or
Push and hold for 3 seconds to decreases the value of the selected
enter or exit menu mode. digit.
In menu mode, scrolls up or
increases the value of the selected
digit.
2 Zero key: Sets the zero value 5 Read key: Starts a sample
before a measurement. measurement.
In menu mode, goes back one In menu mode, selects the menu
menu level or moves the cursor to option shown or moves the cursor
the previous digit. to the next digit.
3 Power key: Sets the power to on
and off.
Push and hold for 5 seconds to
reset the instrument. The
calibration is not deleted.

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4.2 Display description
Figure 4 shows the values and icons shown on the display.

Figure 4 Display

1 Numeric display: Measured value 5 Battery icon: Battery power level.

or menu options Flashes when the battery power
level is low.
2 Range icon: Points to the selected 6 Parameter and measurement
measurement range ranges
3 Measurement ranges or 7 Calibration adjusted icon: The
parameters factory default calibration was
4 Bluetooth® icon: Bluetooth® is adjusted or a user-entered
on3. calibration curve was entered.

Section 5 Set the time

Set the time (24-hour format).

1. Push and hold for 3 seconds to enter menu mode.

The time shows (or 00:00).
2. Push to set the time.
3. Push the or to change the number that flashes. Push to go
to the next digit. Push to go to the previous digit.

3 Shows when the Hach Communication Dongle is installed.

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Section 6 Do a test
DANGER
Chemical or biological hazards. If this instrument is used to monitor
a treatment process and/or chemical feed system for which there
are regulatory limits and monitoring requirements related to public
health, public safety, food or beverage manufacture or processing,
it is the responsibility of the user of this instrument to know and
abide by any applicable regulation and to have sufficient and
appropriate mechanisms in place for compliance with applicable
regulations in the event of malfunction of the instrument.

DANGER

Chemical exposure hazard. Obey laboratory safety procedures and

wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.

CAUTION
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.

The generic steps to do a test follow.

To do a test for a specific parameter (e.g., chlorine), download the test
procedure from the manufacturer's website. Refer to Download a test
procedure on page 14.

1. Push to select the applicable measurement range (e.g., LR or

HR).
2. Prepare the blank. Refer to the test procedure.
3. Clean the sample cell with a no-lint cloth.
4. Insert the blank sample cell into the cell holder. Make sure to install
the blank sample cell in the correct and consistent orientation so
that the results are more repeatable and precise. Refer to Figure 5.
5. Install the instrument cap over the cell holder. Refer to Figure 6.

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6. Push to set the instrument zero.
7. Remove the blank sample cell.
8. Prepare the sample. Refer to the test procedure.
9. Clean the sample cell with a no-lint cloth.
10. Insert the sample cell into the cell holder. Make sure to install the
sample cell in the correct and consistent orientation so that the
results are more repeatable and precise. Refer to Figure 5.
11. Install the instrument cap over the cell holder. Refer to Figure 6.
12. Push . The display shows the results in concentration units or
absorbance.
Note: The result flashes if the result is less or more than the instrument
range.
13. Remove the sample cell from the cell holder.
14. Immediately empty and rinse the sample cell. Rinse the sample cell
and cap three times with deionized water (or distilled water).
Note: As an alternative, use tap water to rinse the sample cell if the samples
measured have a higher concentration than the tap water.

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Figure 5 Sample cell orientation

1 Orientation mark4 2 Sample cell, 25-mm 3 Sample cell, 1-cm

(10 mL), glass5 (10 mL), plastic6

4 Some variants of the instrument have sample cells without an

orientation mark.
5 Use the glass sample cell for low-range chlorine tests.
6 Use the plastic sample cell for high-range chlorine tests.

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 Figure 6 Install the instrument cap over the cell holder

6.1 Download a test procedure

1. Go to http://www.hach.com.
2. Enter "DR300" in the Search box.
3. Select the "Downloads" option on the left side in the "Search Type"
box.
4. Scroll down to "Methods/Procedures".
5. Click the link for the applicable test procedure to download it.

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Section 7 Show measurements
Note: The instrument saves a maximum of 50 measurements. After
50 measurements are done, new measurements replace the oldest
measurements.

1. Push and hold for 3 seconds.

2. Push until "rCL" (recall) shows, then push .
"– 01 –" shows. Measurement 01 is the last measurement done.
3. Push to scroll forward.
The measurement number is followed by the measurement value
and then the time.
4. To go to a measurement number, push until a measurement
number shows, then push or .
Note: Measurements cannot be deleted.
5. Push and hold for 3 seconds to go back to measurement mode.

Section 8 Calibration
This instrument is calibrated at the factory. No user calibration is
necessary.
8.1 Standard calibration adjust
Use the standard calibration adjust (SCA) option when a calibration
must be adjusted to meet regulatory requirements. The factory
calibration is adjusted slightly with the standard calibration adjust
(SCA) option so that the instrument shows the expected value of the
standard solution. The adjusted calibration is then used for all test
results. This adjustment can increase the test accuracy when there are
slight variations in the reagents or instruments.
Note: For instruments with factory-calibrated ranges or methods, the standard
calibration adjust (SCA) feature is disabled when a user-entered calibration is
entered into the instrument. To set SCA back to on, set the instrument to the
factory default calibration. Refer to Set to the factory default calibration
on page 20.

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8.1.1 Do a standard calibration adjust
1. Complete the test procedure for the range to calibrate. For the
sample, use the standard solution concentration given in the test
procedure documentation.
Note: If a standard solution concentration is not given in the test procedure
documentation, a different known standard can be used.
2. When the test procedure is completed, push and hold for
3 seconds.
3. Push until “SCA” shows, then push .
The display shows the standard calibration adjust value.
4. If a different known standard is used, enter the value of the
standard:

a. Push until "Edit" shows, then push .

b. Enter the value of the standard.
Push the or to change the number that flashes. Push to
go to the next digit. Push to go to the previous digit.
5. Push to add the standard calibration adjust value to the factory
calibration curve.

8.1.2 Set the standard calibration adjust to off

To use the factory default calibration again, set standard calibration
adjust (SCA) to off.
1. Push and hold for 3 seconds to enter menu mode.
2. Push until "SCA" shows, then push .
3. Push until "OFF" shows, then push .
Note: To set the SCA function to on again, do a standard calibration adjust.

8.2 User-entered calibration curve

This instrument accepts a user-prepared calibration curve. The
calibration curve can be from 0 to 2.5 absorbance. Make sure that the
calibration curve includes standard values that are less and more than
the range of interest.
The instrument range will be the same as the calibration range. For
example, when the standards that are used are 1.00, 2.00 and 4.00.
The instrument range is 1.00 to 4.00.

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There are two options to enter a user calibration curve:

• Enter a calibration curve with standards—The standard solution

values are entered with the keypad and the absorbance values are
measured.
• Enter a calibration curve with the keypad—The standard solution
values and absorbance values are entered with the keypad.
Note: If the instrument is set to off or the instrument power is removed before a
user-entered calibration curve is completed, the calibration curve is not saved.
The instrument automatically switches off in user-entered calibration entry mode
after 60 minutes of no activity. User-entered calibrations are completed when the
user goes out of calibration (cal) mode or edit mode.

8.2.1 Enter a calibration curve with standards

WARNING

Chemical exposure hazard. Obey laboratory safety procedures and

wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.

CAUTION
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.

Note: As an alternative, deionized water can be used for the blank unless the
sample is significantly more turbid or has more color than deionized water.

1. Push to set the instrument to the range to calibrate (e.g., LR or

HR).
2. Prepare the blank. Refer to the test procedure.
3. Clean the sample cell with a no-lint cloth.
4. Set the instrument to zero.

a. Insert the blank sample cell in the cell holder.

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 b. Install the instrument cap over the cell holder.
c. Push . The display shows “- - - -”, then “0.00”.
5. Push and hold for 3 seconds to enter menu mode.
6. Push until "USEr" shows, then push .
7. Push until "CAL" shows, then push .
8. When "S0" shows on the display, push .
9. Enter 00.00 (or 000.0) for the blank value.
Push the or to change the number that flashes. Push to go
to the next digit. Push to go to the previous digit.
10. When “A0” shows on the display, push to measure the
absorbance of the blank.
The display shows the absorbance value for "S0".
11. Remove the sample cell from the cell holder.
12. Prepare the sample. Refer to the test procedure. For the sample,
use the standard solution concentration given in the test procedure
documentation.
13. Clean the sample cell with a no-lint cloth.
14. Push to show "S1" (or "Add"), then push .
15. Enter the concentration value of the first calibration standard, then
push .
16. When "A1" shows on the display, do the steps that follow to
measure the absorbance:

a. Insert the reacted standard sample cell in the cell holder.

b. Install the instrument cap over the cell holder.
c. Push . The display shows the absorbance value for "S1".
17. The calibration is completed with two calibration points. If additional
standards are necessary for calibration:
Do steps 11 – 16 again to measure more calibration standards.
18. Remove the sample cell from the cell holder.

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19. Immediately empty and rinse the sample cell. Rinse the sample cell
and cap three times with deionized water (or distilled water).
Note: As an alternative, tap water can be used to rinse the sample cell if the
concentration of the parameter in the tap water is less than the samples
measured.
20. Push and hold for 3 seconds to go back to measurement mode.

8.2.2 Enter a calibration curve with the keypad

At least two data pairs are necessary to enter a user-prepared
calibration curve. A concentration value and the absorbance value for
the given concentration is necessary for each data pair. A maximum of
10 data pairs can be entered.

1. Push to set the instrument to the range to calibrate (e.g., LR or

HR).
2. Push and hold for 3 seconds to enter menu mode.
3. Push until "USEr" shows, then push .
4. Push until "Edit" shows, then push .
5. When "S0" shows on the display, push .
6. Enter the first data pair.
The first data pair is S0 (concentration value) and A0 (absorbance
value).

• Push or to change the number that flashes.

• Push to go to the next digit.
• Push to go to the previous digit.
7. Do steps 5 and 6 again to enter the second data pair (S1 and A1).
8. The calibration is completed with two data pairs. If additional data
pairs are necessary for calibration:

a. When “Add” shows, push .

b. Do steps 5 and 6 again to enter more data pairs.
9. Push and hold for 3 seconds to go back to measurement mode.

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8.2.3 Set to the factory default calibration
To remove a user-entered calibration curve from the instrument and
use the factory calibration, do the steps that follow:

1. Push and hold for 3 seconds to enter menu mode.

2. Push until "USEr" shows, then push .
3. Push until "dFL" (default) shows, then push .

Section 9 Maintenance
CAUTION
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.

NOTICE
Do not disassemble the instrument for maintenance. If the internal components
must be cleaned or repaired, contact the manufacturer.

9.1 Clean the instrument

Clean the exterior of the instrument with a moist cloth and a mild soap
solution and then wipe the instrument dry as necessary.
9.2 Clean the sample cells
CAUTION

Chemical exposure hazard. Obey laboratory safety procedures and

wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.

CAUTION
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.

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Most laboratory detergents are used at recommended concentrations.
Neutral detergents, such as Liquinox, are safer to use when regular
cleaning is necessary. To decrease the cleaning times, increase the
temperature or use an ultrasonic bath. To complete the cleaning, rinse
a few times with deionized water and then let the sample cell air dry.
Sample cells may also be cleaned with acid, followed by a thorough
rinse with deionized water.
Note: Always use acid to clean sample cells that were used for low-level metal
tests.
Special cleaning methods are necessary for individual procedures.
When a brush is used to clean sample cells, take extra care to avoid
scratches on the interior surfaces of the sample cells.
9.3 Replace the batteries
Replace the batteries when the battery power level is low. Refer to
Install the batteries on page 7.
Section 10 Troubleshooting
Error Description Solution
E-00 No Zero In user calibration mode, a standard
solution was measured before the
instrument zero was set. Measure a blank
solution to set the instrument to zero.
E-01 Ambient light There is ambient light in the cell holder.
error7 Make sure that the instrument cap is fully
installed on the cell holder. Refer to Do a
test on page 11.
E-02 LED error7 The LED (light source) is out of
regulation. Replace the batteries. Make
sure that the LED in the cell holder
comes on when or is pushed.

7 When an E-01 or E-02 error occurs on a measurement, the

display shows "_.__". The decimal place depends on the
chemistry. If the E-01 or E-02 error occurs while the instrument is
set to zero, set the instrument to zero again.

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Error Description Solution
E-03 Standard adjust
error • The measured value of the standard
solution is more than the adjustment
limits. Prepare a fresh standard.
• The standard solution is not within the
concentration range that can be used
for standard calibration adjust. Prepare
a standard with a value at or near the
recommended concentrations given in
the procedure.
• Make sure that the concentration of the
standard solution is entered correctly.

Reading flashes The reading is If the reading is less than the instrument
followed by more or less than range, make sure that the instrument cap
E-04 the instrument is fully installed on the cell holder.
range.8 Measure a blank. If the blank reading is
not zero, set the instrument to zero again.
If the reading is more than the instrument
range, identify if there is a light blockage in
the cell holder. Dilute the sample. Do the
test again.
E-06 Absorbance error The absorbance value is not correct or the
user-entered calibration curve has fewer
than two points. Enter or measure the
absorbance value again.
E-07 Standard value The standard solution concentration is
error equal to another standard solution
concentration that is already entered in the
user-entered calibration curve. Enter the
correct standard concentration.
E-09 Flash error The instrument is not able to save data.
Push and hold for 5 seconds to reset
the instrument.

E-10 Environment The ambient temperature is out of range.

temperature too Use the instrument only in the specified
high or too low operating conditions. Refer to
Specifications on page 3.

8 The value that flashes will be 10% over the upper test range limit.

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