Globe Scientific GCH-24 User manual

®
Hematocrit Centrifuge
USER MANUAL
GCH-24
www.globescientic.com
IMPORTANT: Carefully and completely read this user manual to ensure
user safety and achieve most efcient operation.

Contents
Important Safety Information ................................................ 1-2
1. Specications.........................................................................2
2. Declarations of Conformity ............................................3
3. Required Operating Conditions....................................3
3.1 Basic Operating Conditions...........................................3
3.2 Transport and Storage Conditions..............................3
4. Installation..............................................................................4
4.1 Location .................................................................................4
4.2 Connection of the Power Cord and Grounding.......4
5. Unit Overview.......................................................................4
6. Control Panel.........................................................................5
7. Rotor Preparation .......................................................... 5-6
7.1 Inspect the Rotor ...............................................................5
7.2 Symmetrically Load Tubes Into Rotor .......................6
8. Operation........................................................................... 6-9
8.1 Normal Operation ........................................................ 6-8
8.2 RCF Operation ....................................................................9
8.3 Pulse Operation..................................................................9
9. Maintenance...................................................................9-10
9.1 Cleaning..........................................................................9-10
9.2 Consumables ....................................................................10
9.3 Routine Inspection .........................................................10
10. Troubleshooting Tips................................................11-12
10.1 How to Open the Lid......................................................11
10.2 Replacing Fuses ...............................................................12
11. Rotor Instructions .....................................................12-13
11.1 Rotor Structure................................................................12
11.2 Rotor Overview...............................................................13
11.3 Rotor Installation............................................................13
11.4 Available Rotors and Adapters..................................13
12. Calculating RCF .................................................................14
13. Returning and Disposal..................................................14
13.1 Returning the Unit..........................................................14
13.2 Disposal ..............................................................................14
14. Ordering Information .....................................................14
15. Warranty ..............................................................................15
16. Service ...................................................................................14
© 2019 Globe Scientic Inc. all rights reserved. Globe Scientic Inc. and the Globe Scientic logo are registerd trademarks of Globe Scientic Inc. No part
of this manual may be reproduced or otherwise transmitted without the prior written consent of Globe Scientic Inc.
Globe Scientic Inc. reserves the right to change information at any time. Note that specications of the centrifuge are subject to change.
Version 1.0 19134
GCH-24 Hematocrit Centrifuge
USER MANUAL
®

1
Important Safety Information
Common Safety Precautions
Carefully read the following safety precautions for a thorough understanding.
• Follow the instructions and procedures described in this manual to operate this centrifuge safely.
• Carefully read all safety messages in this manual and the safety instructions on the centrifuge.
• Safety messages are labeled as indicated below. They are in combination with signal words of “WARNING” and
“CAUTION” with the safety alert symbol to call your attention to items or operations that could be dangerous to
you or other persons using this centrifuge. The denitions of signal words are as follows:
WARNING: Personal Danger
Warning notes indicate any condition or practice, which if not strictly observed, could result in personal injury or
possible death.
CAUTION: Possible Damage to Centrifuge
Caution notes indicate any condition or practice, which if not strictly observed or remedied, could result in
damage or destruction of the centrifuge.
NOTE: Notes indicate an area or subject of special merit, emphasizing either the product’s capability or common
errors in operation or maintenance.
• Do not operate the centrifuge in any manner not described in this User Manual. When in doubt or if you have any
troubles with this centrifuge, please CONTACT GLOBE SCIENTIFIC AND ASK FOR HELP.
• The precautions described in this User Manual are carefully developed in an attempt to cover all the possible risks.
However, it is also important that you are alert for unexpected incidents. Be careful operating this centrifuge.
WARNING
• This centrifuge is not explosion-proof. Never use explosive or ammable samples.
• Do not install the centrifuge in or near places where inammable gases are generated or chemicals are stored.
• Do not place dangerous materials within 30cm (approximately 12 inches) of the centrifuge.
• Prepare all necessary safety measures before using samples that are toxic, radioactive or contaminated with
pathogenic micro-organisms. Use of these materials are at your own risk.
• If the centrifuge, rotor and accessories have been contaminated by solutions with toxic, radioactive or
pathogenic materials, clean them according to the decontamination procedure as specied.
• If you require service, please sterilize and decontaminate the centrifuge in advance and then notify the service
center the details of the materials and procedure.
• To avoid electrical shocks, ensure hands are dry before handling the power cord or turning on/off the power
switch.
• For safety purposes, do not come within 30cm (approximately 12 inches) around the centrifuge when in
operation.
• While the rotor is rotating, never release the lid lock.
• Unauthorized repairs, disassembly, or modifying the centrifuge except by an authorized Globe Scientic service
center or service technician is strictly prohibited.

2
CAUTION
• This centrifuge must be located on a rm and level table.
• Make sure the centrifuge is horizontal before running.
• Make sure the angle between the door and cover is greater than 70 degrees when opening the door.
• Be careful not put your ngers or hands between the door and cover while the door is open.
• Do not move or relocate the centrifuge when it is running.
• If uid spills in the rotor chamber, please promptly clean and dry with a dry cloth to avoid sample
contamination.
• Ensure removal of any objects and/or fragments of the tubes dropped inside the rotor chamber before running
the centrifuge.
Rotor Cautions:
• Always check for corrosion and damage on the rotor surface before using it. Do not use the rotor if an
abnormality is found.
• Do not set the speed beyond the allowable maximum speed of the rotor kits (rotor and adapters).
• Do not exceed the allowable imbalance.
• Use the rotor and tubes within their actual capacities.
• If any abnormal condition occurs during operation, please stop immediately and contact our service center.
Notify the service center of the warning code (if displayed) along with the model and serial numbers and a
detailed description of the issue.
• Vibrations are likely to damage the centrifuge. Please contact our service center if any abnormality is observed.
1. Specications
Maximum Speed 14000rpm(200-14000rpm) increment: 10rpm (GCH-24-ROT-1.5-2)
12000rpm(200-12000rpm) increment: 10rpm (GCH-24-ROT-H)
Maximum RCF 18620×g, increment: 10×g (GCH-24-ROT-1.5-2)
13680×g, increment: 10×g (GCH-24-ROT-H)
Maximum Capacity GCH-24-ROT-1.5-2: 2ml/1.5mL/0.5mL/0.2mL×24
GCH-24-ROT-H: Capillary tubes×24
Timer 30seconds - 99minutes-HOLD, continuous operation
Driving Motor Brushless DC motor
Safety Devices Dual door interlock, over-speed detector, over-temperature detector,
automatic internal diagnosis
Power Requirements Single-phase, 220V-240V, 50Hz/60Hz, 5A.
110V-120V, 50Hz/60Hz, 5A
Dimensions (mm) 280 × 364 × 266 (L x W x H)
Weight 12kg
Additional features Speed/RCF switch, pulse operation, processing display, audible reminder
Important Safety Information (Cont.)

3
2. Declaration of Conformity
Construction in accordance with the following safety standards:
EN 61010-1
EN 61010-2-10
Construction in accordance with the following EMC standards:
EN 61326-1/ FCC Part 15 Subpart B/ IECS 001
Associated EU guidelines:
EMC guidelines: 2004/108/EC
Centrifuge guidelines:
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme à la norme NMB-001 du Canada.
Changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class A 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 his
own expense.
3. Required Operating Conditions
3.1 Basic Operational Conditions
• Power: Single-phase, 220V-240V, 50Hz/60Hz, 5A; 110V-120V, 50Hz/60Hz, 5A
• Ambient temperature: 2ºC~40ºC
• Relative humidity: ≤80%, non-condensing
• No vibration and airow around the centrifuge
• No static, explosive and corrosive gases around the centrifuge
3.2 Transport and Storage Conditions
• Storage temperature: -40ºC-55ºC
• Relative humidity: ≤93%

4
4. Installation
This section describes the instructions that you should adhere to when installing the centrifuge to ensure your safety and
optimum performance of the unit. Before moving the centrifuge, the rotor must be removed.
WARNING
• Improper power supply may damage centrifuge
• Make sure the power source conforms to the required power supply before connecting
4.1 Location
1. Place this centrifuge on a rm, at and level surface and ensure the four feet of this centrifuge stand on the counter
rmly. Avoid installing on a slippery surface or a surface prone to vibration.
2. Ideal ambient temperature is 20ºC ± 5ºC, avoid placing the centrifuge in direct sunlight if the ambient temperature
exceeds 30ºC.
3. Keep obstructions clear of the centrifuge at least 10cm on both sides and at least 30cm behind it to ensure optimal
cooling efciency.
4. Keep away from heat or water to avoid sample temperature issues or centrifuge failures.
4.2 Connection of the Power Cord and Grounding
WARNING
• To avoid electrical shocks, ensure your hands are dry when touching the power cord.
• This centrifuge must be grounded properly.
A minimum 10A outlet providing a sufcient ground is required, and this must meet local safety requirements.
5. Unit Overview
FRONT VIEW REAR / SIDE VIEW
Seal Ring of Lid
Cover
Control Panel
Lid Lock Hook
Power Switch
Lid View Port
Air Vents
Power Cord
Socket
Power Switch

5
6. Control Panel
The main display is shown above. The speed is set to 8880rpm, the temperature of the centrifugal chamber is 21ºC and
the running time is 88 minutes. When the speed symbol is rotating, this indicates the centrifuge is running. The rotation
of the speed symbol increases with the spin speed of the centrifuge. Temperature of chamber is displayed but cannot be
controlled. The time symbol displays the ratio of working to time setting. The total time setting is divided into 10 sections.
CONTROL PANEL
Speed Display
Temperature Display
Time Display
1
2
34
5
IMPORTANT: Plug unit into appropriate main supply based
on the rated voltage.
Pulse . . . . . . . . . . . . . Press to accelerate and hold at the set
speed. The centrifuge stops immediately
once this button is released.Radius
Door . . . . . . . . . . . . . . Press to open the lid. This button is not
enabled while the centrifuge is running.
Start / Stop . . . . . . . Press to start the centrifuge. Press to
stop if centrifuge is already running.
Select . . . . . . . . . . . . . Press to choose the parameter you wish
to modify.
Adjustment Knob Rotate clockwise to increase parameter
values. Rotate counterclockwise to
decrease parameter values. Press to
switch between speed and RCF.
OPERATION
1
2
3
4
5
7. Rotor Preparation
CAUTION
• Do not overload samples into the centrifuge as this will cause leaking.
• Do not exceed the actual capacity allowed in this user manual.
7.1 Inspect the Rotor
Check the rotor for corrosion or scratches before using.
CAUTION
• If any abnormality such as corrosion or scratches are found, stop using the rotor and contact Globe Scientic.
• Only Globe Scientic rotors may be used with the centrifuge.

6
7. Rotor Preparation (Cont.)
7.2 Symmetrically Load Tubes Into Rotor
IMPORTANT: The rotor should always be loaded in a balanced manner to avoid personal injury and to ensure
centrifuge longevity.
• When any tube is loaded, a tube of the same type, volume and weight must be added in the opposite rotor location.
• Never intentionally run the centrifuge in an unbalanced condition even if operation is not affected.
CAUTION
• Make sure the rotor and shaft are tightened. Otherwise, the rotor may come apart while operating and cause
damage to the centrifuge and rotor.
8. Operation
CAUTION
• Do not push or lean against the centrifuge while it is running.
• Do not run the centrifuge when fragments or sample solutions are left in the centrifuge chamber. Always keep
the centrifugal chamber clean.
• If the centrifuge makes a strange noise during operation, stop it immediately and contact Globe Scientic.
Please include any warning code(s), if displayed.
8.1 Normal Operation
Turn on the power switch and the centrifuge will start self-diagnostic checks, see gure 8-1 below:
Figure 8-1 Self-check interface
HELLO 88 ºC 88 min

7
After self-diagnostics, the centrifuge will display the cumulative running time, see gure 8-2 below:
Figure 8-2 indicates the centrifuge has accumulated running time 312 hours 56 minutes and 45 seconds. Then the
centrifuge displays the last running parameters, see gure 8-3 below
• Speed: 14000rpm; running time: 12minutes; centrifugal chamber temperature: 25ºC
• Release the door.
8. Operation (Cont.)
Figure 8-2 Cumulative running time interface
00312 56 ºC 45 min
Figure 8-3 Last running interface
14000rpm 25 ºC 12 min
CAUTION
• Attach the rotor to the rotor shaft. Ensure the rotor is properly positioned and connected with the shaft,
tightening the locking nut to secure the rotor with shaft, to prevent the rotor damaging the centrifuge.
• Ensure the rotor lid is rmly secured to the rotor.
LOADING AND REPLACING THE ROTOR
Load the rotor onto the shaft Tighten the locking nut Attach the rotor lid

8
8. Operation (Cont.)
LOADING AND REPLACING THE ROTOR (Cont.)
• Load the rotor onto the shaft and ensure the rotor is correctly positioned.
• You should feel a “click” when the rotor is properly connected to the shaft. If not, there may be something stuck between
the rotor and the shaft. Double check and clean if necessary.
• Rotate the rotor slightly with your ngers to check if the rotor vibrates, if it does you should reattach the rotor.
• Rotate the nut clockwise using the wrench to rmly tighten the rotor to the shaft.
• Close the rotor lid, rmly tighten the lid clockwise to the rotor and ensure it is positioned properly. Close the door and
then start running.
• The method of removing the rotor is the same as the above in reverse (turning the locking nut counterclockwise)
START THE OPERATION
Press the Select button to select the desired parameters. The parameters can be modied when the value is ashing.
Rotate the Adjustment Knob clockwise to increase parameter value. Rotate the Adjustment Knob counter clockwise to
decrease parameter value. Rotate the Adjustment Knob faster and the parameter value will increase faster. The minimum
speed increment is 10 rpm, the minimum time increment is 1 second.
1. Set the speed
• Press the Select button until the speed rpm is displayed.
• When the Speed button is selected, the speed symbol will ash the speed value.
• The minimum speed value you can set is 200rpm; the minimum increment is 10 rpm.
• Rotate the Adjustment Knob clockwise to increase speed value. Rotate the Adjustment Knob counter clockwise to
decrease speed value.
• There is a circulating function to increase/decrease the speed values. Rotate the Adjustment Knob clockwise to
change settings from small » large » maximum » minimum. Rotate the Adjustment Knob counter clockwise to change
settings from large » small » minimum » maximum.
2. Set the time
• Press the Select button, the time value ashes in the time setting mode.
• Rotate the Adjustment Knob to set the running time from 30 seconds up to 99 minutes.
• When the time displays HD, the centrifuge is in continuous running mode.
3. Warning display
• If an error occurs during operation, the centrifuge will brake to stop automatically and display the error code in the
time/display area. The error code can be checked in table 10-1, and corrective actions can be applied accordingly.
END THE OPERATION
1. The centrifuge will brake when it reaches the set time or when the Start / Stop button is pressed
• When the rotor stops rotating, the centrifuge will start beeping to alert the operation has nished.
2. Open the lid
• The lid will be released automatically when the operation has stopped.
• With the lid closed, you can press the Door button to open it.
• After ending centrifuge operation, the program will store the setting parameters of this operation and will recall these
parameters when restarting the program.
3. Remove the rotor and samples

9
9. Maintenance
9.1 Cleaning
CAUTION
• Failure to follow the recommended instructions for cleaning and disinfecting may result in damage to the
centrifuge.
8. Operation (Cont.)
8.2 RCF Operation
1. Turn on the Power Switch
2. Set an RCF (Relative Centrifugal Force) value
CAUTION
• Do not exceed the allowable maximum RCF value of the rotor and adapters (section 11.2).
• Press the Select button and choose speed unit ×g, the speed symbol will then ash into RCF value input status.
• If no button is pressed after the speed value has ashed after 5 seconds, the input mode will be shut down.
• Rotate the Adjustment Knob to input an RCF value; the RCF increment is 10×g.
3. Set time and start operation as described in Section 8.1
8.3 Pulse Operation
This function is used to remove residual sample material that may have adhered to the interior of tubes or for quick spins.
NOTE: The Pulse button works only when the rotor is stopped and the lid is locked.
1. Turn on the power switch and load the rotor onto the shaft, tighten the rotor lid and make sure it is in a secured
position, and then close the lid.
2. The centrifuge goes into preparation mode and displays the values of the last run.
3. Press the Pulse button and hold; the centrifuge will then speed up to the set speed. When releasing the Pulse button
during acceleration, the centrifuge will start to decelerate and stop.

10
1. Centrifuge
• If the centrifuge is exposed to ultraviolet rays for a long period of time, the lid may discolor or the label may be peel off.
It is recommended to cover the centrifuge with a piece of cloth to protect it from direct exposure or to move it from
direct exposure.
• If the centrifuge needs cleaning, clean it with a cloth or sponge moistened with a neutral detergent solution.
• Sterilize the centrifuge by wiping with a cloth moistened with a 70% ethanol solution.
2. Rotor Chamber
CAUTION
• Do not directly pour water, neutral detergent or disinfectant solution into the rotor chamber, otherwise uids
may leak into the drive units and cause corrosion or deterioration to the bearings.
• If the rotor chamber needs cleaning, clean with cloth or sponge moistened with a neutral detergent solution. Sterilize
the centrifuge by wiping with a cloth moistened with a 70% ethanol solution.
3. Drive Shaft
• We recommend regular maintenance for the drive shaft. You can wipe the drive shaft with a soft cloth, and then apply
a thin coat of silicon grease.
4. Lid
• Clean and sterilize the lid using the same method as in step one above.
5. Rotor
• To prevent corrosion, remove the rotor from the rotor chamber. If not in use for a long period of time, turn the rotor
upside down to dry the tube cavities and keep clean.
• For sample leaks in the rotor, rinse the rotor with water. Apply a thin coat of silicon grease to the rotor when it is
completely dry.
• The rotor should be checked every 3 months to ensure the tube and rotor cavities are clean and to apply a thin coat of
silicon grease.
9. Maintenance (Cont.)
9.2 Consumables
Replaceable wearing parts are listed below. It is recommended to replace these according this table.
9.3 Routine Inspection
1. Check that the centrifuge is on a sturdy, at and level surface with all four feet seated rmly on the surface.
2. Check that the centrifuge is grounded properly. Use a multimeter to check if there is a short circuit between the
power cord grounding pin and the motor shaft. If an open circuit is found, contact Globe Scientic before use.
Replaceable Wearing Parts Replacement Conditions
Lid Sealing Ring
Cracked
Temperature Sensor Rubber Housing

11
10. Troubleshooting Tips
This centrifuge has a self-diagnostic function. If a problem occurs, an error/warning code will be displayed on the time
display screen and the operator can determine the malfunction with the alarm code below.
• Alarm codes E-1~E-9 are related to incorrect operation/programming. You can continue running the centrifuge after
implementing corrective procedures.
Problem Cause Solution
Nothing displays on the Building circuit breaker or GFI Reset the circuit breaker or
screen when the Power recepticle has tripped GFI recepticle and turn on
Switch is turned on Power Switch
E-02
The lid opened during operation Close the lid immediately
Lid Fault
E-03
Centrifuge cannot identify the rotor
Use the correct rotor
Replace the rotor identication
connection
Alarm Code Displayed E-04 Air vents are blocked Clean air vents
Temperature
Radiator fan is damaged Replace radiator fan
Fault
E-06
The set parameter exceeds the Modify the set parameter
Incorrect
allowable range value
Parameter
E-10~86 Refer to service manual Contact Globe Scientic
10.1 How to Open the Lid
WHEN POWERED ON
CAUTION
• The lid should only be opened when the rotor has come to a complete stop.
1. Turn on the power switch; the lid is then released automatically.
2. The lid lock will be released automatically once the operation is nished.
3. It is possible to release the lid by pressing the Door button when the rotor has stopped.
IN THE CASE OF POWER OUTAGE
The lid will not open automatically if there is a power outage. It is possible to open manually as follows:
1. Ensure the rotor has stopped rotating.
• Listen carefully to ensure no rotation can be heard.
2. Insert a screw driver into each lid release hole to open the lid.
• Holes are located on the left and right sides of the unit.
• Carefully insert a screw driver into the lid release holes and push forward to release the lid.

12
10. Troubleshooting Tips (Cont.)
10.2 Replacing Fuses
There are two fuses in the GCH-24 Hematocrit Centrifuge, 250V, 10A time-delay type, size: Ф5×20.
The fuse holder is located inside the power inlet.
• Pull out the fuse holder tray from the power inlet and replace the fuses if necessary.
11. Rotor Instructions
CAUTION
• Read the instructions thoroughly to properly load and use the rotor.
• Do not exceed the allowable maximum speed of the rotor, tube and adapters etc. Ensure the allowable
maximum speed of the adapters is lower than the rotor’s maximum speed.
11.1 Rotor Structure
Rotor Lid Fastener Locking Nut
Shaft Hole

13
11. Rotor Instructions (Cont.)
Tighten the screw nut Snap rotor lid onto rotor body
11.3 Rotor Installation
Rotor Lid
Reading Lid
Rotor Body
Screw Nut
Capillaries
11.2 Rotor Overview
11.4 Available Rotors and Adapters
Note: The centrifuge rotor can separate samples with a density lower than 2.0g/ml. If the sample density is over 2.0g/ml,
calculate allowable speed using the following formula:
Rotor Tube Tube Size/ Adapters Maximum Maximum Centrifugal Maximum
Type Quantity Type Required Speed (rpm) Radius (cm) RCF (×g)
24 ø1.75 x 75 — 12000 8.5 13680
24 2/1.5mL — 14000 8.5 18620
24 0.2mL PCR GCM-24-AD2 14000 6.9 15110
24 0.5mL Micro GCM-24-AD5 14000 7.6 16638
GCH-24-ROT-1.5-2
(optional)
GCH-24-ROT-H

14
13. Returning and Disposal
13.1 Returning the Unit
Before returning the unit, a transport securing device must be installed.
Before the unit or its accessories are returned to Globe Scientic, they must be decontaminated and cleaned to protect
people, the environment and property.
13.2 Disposal
Before disposal, the device must be decontaminated and cleaned to protect people, the environment and property. When
you are disposing of the device, the respective statutory rules must be observed.
Pursuant to guideline 2002/96/EC (WEEE), all devices supplied after August 13, 2005 may not be disposed of as part
of domestic waste. The device belongs to group 8 (medical devices) and is categorized in the business-to-business eld.
The icon of the crossed-out trash can shows that the device may not be disposed of as part of domestic waste. The waste
disposal guidelines of the individual EC countries may vary. If necessary, contact your supplier.
12. Calculating RCF
The RCF can be determined with the following formula:
RCF = 1.118 × r × n2× 10-5
r = rotating radius, unit: cm; n = rotating speed, unit: rpm
14. Ordering Information
Item # Descriptions Unit
GCH-24 Hematocrit Centrifuge, 24-Place, 120v, 60Hz, US Plug, Each
(includes: 24 place hematocrit rotor kit with lid and reading disk)
GCH-24-UK Hematocrit Centrifuge, 24-Place, 230v, 50Hz, UK Plug, Each
(includes: 24 place hematocrit rotor kit with lid and reading disk)
GCH-24-EU Hematocrit Centrifuge, 24-Place, 230v, 50Hz, EU Plug, Each
(includes: 24 place hematocrit rotor kit with lid and reading disk)
Accessories
GCH-24-ROT-1.5-2 Rotor for use with GCH-24 Hematocrit Centrifuge with Lid, Fixing Clips and Each
O-Ring, 14000rpm max, 24-Place for 1.5mL and 2.0mL Microcentrifuge Tubes
GCM-24-AD2 Rotor Adapters for use with GCH-24-ROT-1.5-2, for 0.2mL Tubes 24
GCM-24-AD5 Rotor Adapters for use with GCH-24-ROT-1.5-2, for 0.5mL Tubes 24

15
15. Warranty
This centrifuge is guaranteed for two years from the date of delivery provided that it has been operated and maintained
properly.
Instances that would void the warranty include:
1. Failures caused by incorrect installation.
2. Failures caused by rough or improper handling.
3. Failures caused by transportation or relocation after installation.
4. Failures caused by unauthorized disassembly or modication.
5. Failures caused by using non-standard spare parts or accessories and/or unauthorized modication of the rotor or
centrifuge.
6. Failures caused by natural disasters including re, earthquakes, etc. (force majeure).
16. Service
To ensure safe and efcient operation of your GCH-24 centrifuge, it is necessary to keep the centrifuge clean and to use as
recommended in this manual. If centrifuge has problems, do not attempt to repair it by yourself. In the unlikely event you
require service or assistance, please contact Globe Scientic.

© 2019 Globe Scientic Inc. All rights reserved. The Globe Scientic logo is a registered trademark of Globe Scientic Inc. GCH-24 Manual 19134
E-Mail:
service@globescientic.com
Sales and Technical Support:
1 800-394-4562 ext. 2
1 201-599-1400
1 201-599-1406 fax
International Sales:
1 201-599-1400
internationalsales@globescientic.com
®Customer Service:
1 800-394-4562 ext. 1
1 201-599-1400
1 201-599-1406 fax
Address:
Globe Scientic Inc.
400 Corporate Drive
Mahwah, New Jersey 07430
USA