MSE CENTAUR 2 User manual

Instruction Manual
For
CENTAUR 2
CENTRIFUGE
READ BEFORE USE!
Models: MSB020.CX1.5
MSB020.CX1.1
71100-493-4

Health and Safety at Work
MSE UK Ltd is required under the Health and Safety at Work Act, 1974 and other UK legislation as designers,
manufacturers, suppliers and importers of articles for use at work to ensure that, as far as is reasonably practicable,
articles which we design, produce, supply or import are safe and without risk to health.
We are required to provide information on the safety and handling precautions to be observed when installing,
operating, maintaining and servicing our products. Such advice is contained in this manual.
We are also obliged to update this information should circumstances change and to operate a system to this end.
We should also like to point out, however that you as users have an important responsibility in the provision
and maintenance of safe working practices and conditions.
Accordingly, we draw the following matters to your attention:
1. This apparatus should only be used as intended and within its design parameters by
suitably qualified and trained personnel who have read and understood the relevant
sections of this manual.
2. This manual should be readily available to such personnel at all times.
3. In addition to that which is written in the manual, normal common-sense safety precautions
must be taken at all times to avoid the possibility of accidents. Particular care is required
when working with apparatus at high temperature or pressure.
4. Installation, maintenance, repairs and servicing should only be carried out by a MSE (UK)
Ltd approved engineer, and suitably trained personnel should only carry out connection to
electrical supplies.
TECHNICAL SUPPORT, WARRANTY SERVICE AND MAINTENANCE
UK customers; if you are in any doubt whatsoever regarding the correct use of this apparatus, or if you require any
technical data or assistance, please contact the MSE UK Ltd Technical Support Department at:
MSE UK Ltd
Worsley Bridge Road Telephone [phone]
Lower Sydenham Fax [phone]
London E-mail: [e-mail]
SE26 5AZ Web Page: www.mseuk.co.uk
OVERSEAS CUSTOMERS: Should contact their local Distributor.
ELECTRICITY SUPPLIES: Voltage and frequency
MSE (UK) Ltd electrical apparatus is offered and labelled in a number of voltage ranges and, where necessary,
different frequencies of mains supply. MSE UK Ltd does not accept any responsibility for the operation of any such
apparatus should it be connected to electricity supplies which are normally outside, or vary outside, the stated
voltage and frequency values for which it is designed, nor for any consequential loss, damage or injury, howsoever
caused.

MSE UK Ltd Warranty
Terms and Conditions
We hope that you do not have the need to use the extensive warrantycover that MSE UK Ltd.
extends to you. However should you have a problem, our prompt response is greatly helped if you have
filled in and posted the pre-paid Warranty Registration Card supplied with your new equipment.
This entitles you to a one-year warranty from the date of delivery. During this period, component
parts proven to be defective in materials or workmanship will be repaired or replaced at our expense.
Installation, commissioning and calibration are not covered by this warrantyagreement. The MSE
approved service agent must be contacted for warrantydetermination and direction prior to any work
being carried out.
These warranties are only applicable to new products, and not second hand nor refurbished
products even if repaired byMSE UK Ltd. Any such products are covered byseparate warranty terms and
conditions which will be made available on request.
Replacement or repair of component parts or equipment under this warrantyshall not extend the
warrantyto either the equipment or the component part beyond the original one-year warranty period
unless agreed in writing by MSE UK Ltd.
The above warranties are extended to the original purchaser upon full invoice payment. A
purchase receipt or other proof of purchase may be required before warrantyservice will be performed.
These warranties onlycover failures due to defective workmanship which occur during the normal
operation of the product by the original purchaser, and not failures which result from accident, misuse,
abuse, neglect, mishandling, misapplication, alteration, faultyinstallation, electrical power fluctuations,
dust, or other environmental extremes, modification or service other than byan approved service agent or
following the written authorityof the manufacturer, or damage that is attributable to acts of God.
Expendable items such as motor brushes, door seals, lid seals, "O" rings or lamps are excluded.
MSE UK Ltd, or its approved service agent, reserves the right to repair defective equipment on
the premises of the customer, or at a service station, at the sole discretion of MSE UK Ltd or their
approved agent. In the event of return to an approved service centre the customer is responsible for the
safe packaging of the instrument and notification to the service centre. Neither MSE UK Ltd nor its agents
are responsible for any damage occurring during shipment.
Specification and Material Changes: MSE UK Ltd reserves the right to supply our latest and
improved models at time of shipment.
Taxes: The prices quoted do not include any taxes imposed by the State or Countryin which the
purchase was made.
Installation: Installation of all equipment shall be at the expense of the purchaser unless stated
otherwise. Access to the site, and the provision of required utilities e.g. Power, water and drainage to
suitable connections, will be the responsibility of the purchaser, and at the purchaser's expense.
Limitation of liability: In no event, whether as a result of breach of contract or warranty, shall MSE
UK Ltd be liable for any consequential or incidental damages including, but not limited to, loss of profit or
revenues, loss of use of the equipment or anyassociated equipment, down time costs, costs of substitute
equipment, costs of labour, costs due to delays or claims of purchaser's own customers for such
damages. The purchaser agrees to indemnifyMSE Ltd and to hold them harmless from anyand all
liability, claims, demands, actions, suits, expenses or costs, including attorney's fees relating to such
consequential or incidental damages.
All expressed and implied warranties, including the warranties of merchantable quality and fitness
for a particular purpose, are limited to the application period of one year.
Validity: Legal rights vary from countryto countryand states within countries, so some or all of
the exclusions or limitations listed above may not apply, but if any part of these conditions shall be found
to be unenforceable it shall not affect the validityor enforceability of the remainder of the conditions.

ELECTRICITY SUPPLY
Before connecting this apparatus to the electricity supply, check the information given
on the apparatus rating plate and ensure that;
A) Your supply is single phase A.C. (alternating current) of the stated frequency
with neutral nominally at earth potential.
B) Your supply voltage is within the stated range.
C) The current rating is within the capacity of your outlet.
D) Your plug or electricity supply circuit is fitted with a suitable fuse.
220v - 240v 110v - 120v
Fuse rating 5 amp see note for 110V - 120V
WARNING! This apparatus must be earthed.
The wires in the mains lead are coloured in accordance with the following code;
220v - 240v 110v - 120v
Live Brown Black
Neutral Blue White
Earth Green and Yellow Green
Connect the wires to a non-reversible 3-pin plug as follows;
Green and Yellow or Green to terminal marked E (Earth), G (Ground), coloured Green
or Green and Yellow or marked with the Earth symbol.
Blue or White wires to terminal marked N (Neutral) or Common or coloured Blue.
Brown or Black wires to terminal marked L (Live) or Phase or coloured Brown.
Note 110v - 120v installations to comply with National and State Wiring Codes.
IMPORTANT Consult an electrician if in any doubt or if your supply system has any of
the following:
No earth.
A coloured code different from the above.
Reversible plugs.
Supply and return leads that are both above earth potential.
NOTE: Do not touch plug pins within two seconds of plug removal from socket.

CONTENTS 5
1. IMPORTANT INFORMATION.................................................................................7
2. GENERAL DESCRIPTION.....................................................................................8
2.1 Controls And Indicators..................................................................................9
2.2 Centrifuge Bowl .............................................................................................10
2.3 Opening Lid Manually ...................................................................................10
2.4 Specifications.................................................................................................10
3. INSTALLATION....................................................................................................12
3.1 Preparation.....................................................................................................12
3.2 Connecting To 3 Pin Plug.............................................................................12
3.3 Recommendation For Securing Centrifuge................................................13
4. ROTORS AND ACCESSORIES...........................................................................14
4.1 Installation Of Rotor ......................................................................................14
4.2 Removal Of Rotor ..........................................................................................14
4.3 Loading The Rotor.........................................................................................15
4.4 Rotor Speed....................................................................................................15
4.5 Rotors And Accessories Tables...................................................................16
4.5.1 4 Place Swing out rotor ..................................................................................16
4.5.2 4 Place Swing out rotor ..................................................................................17
4.5.3 8 Place Swing out rotor ..................................................................................18
4.5.4 8 Place Angle rotor.........................................................................................19
4.5.5 12 Place Angle rotor.......................................................................................20
5. OPERATION.........................................................................................................21
5.1 Run Procedure...............................................................................................21
5.2 Stop Procedure..............................................................................................21
5.3 Imbalance .......................................................................................................21
5.4 Motor Thermal Cut-out..................................................................................21
5.5 Power Failure.................................................................................................21
5.6 Lid Safety Circuit ...........................................................................................22
6. MAINTENANCE....................................................................................................23
6.1 Cleanliness.....................................................................................................23
6.2 Drive Shaft......................................................................................................23
6.3 Prevention Of Corrosion...............................................................................23
6.4 O-Rings...........................................................................................................23
6.5 Sterilisation ....................................................................................................23
6.6 Disinfecting ....................................................................................................23
6.7 Inspection Or Renewal Of Motor Brushes..................................................23
6.8 Renewing The Fuse.......................................................................................24
6.9 Removal And Replacement Of Centrifuge Bowl ........................................25
6.10 Lid Friction Adjustment .....................................................................25
7. SERVICING...........................................................................................................26
7.1 Calibration Of Speed Control .......................................................................26
7.2 Removal Of The Motor ..................................................................................26

CONTENTS 6
7.3 Adjustment Of Balance Detector..................................................................27
8. CIRCUIT DESCRIPTION......................................................................................29
8.1 Power Input ....................................................................................................29
8.2 Speed Control ................................................................................................29
8.3 Tacho Circuit..................................................................................................29
8.4 Speed Indication............................................................................................30
8.5 Lid Safety Circuit ...........................................................................................30
8.6 Balance Circuit...............................................................................................30
9. ESSENTIAL PARTS LIST....................................................................................32
9.1 Body Assembly..............................................................................................32
9.2 Lid and Associated Assembly......................................................................32
9.3 Motor Assembly.............................................................................................33
9.4 PCB ‘A’ Assembly..........................................................................................33
9.5 PCB ‘D’ Assembly..........................................................................................33
9.6 Instrument Chassis Assembly.....................................................................34
10. PRODUCT DISPOSAL - ISO 14001 COMPLIANCE......................................34
11. HOW TO OBTAIN SERVICE ON YOUR FALCON CENTRIFUGE ...............35

GENERAL INFORMATION 7
1. IMPORTANT INFORMATION
The following general instructions, and the precautions regarding the
prevention of corrosion in rotors and accessories, as described under
MAINTENANCE, must be noted and carefully observed.
The maximum load should always be checked before commencing any operation. If
the sample has a relative density greater than 1.2, the maximum permissible speed of
the rotor should be calculated as given in this publication, and applied.
Any liquid spilt in the centrifuge should be removed immediately because corrosion is
a major cause of failure in centrifuges. Where particularly corrosive solutions are used,
the samples should be placed in sealed containers and all necessary precautions
observed. The following list gives some examples of corrosive liquids used, particularly
in the biochemical field:
Phenol/cresol/water, chloroform/isoamyl alcohol, salt solutions (especially ammonium
sulphate), solutions of ammonium hydroxide and solutions of acids such as
hydrochloric, trichloroacetic and perchloric acids.
It should be noted that many other substances used in different fields are often equally
corrosive. Users should always check whether or not a substance being used is
corrosive in order to take suitable precautions.
NOTE: The following materials are prohibited:
Flammable or explosive materials
Materials which chemically interact vigorously
The load must be distributed symmetrically round the rotating assembly so that it is
evenly balanced and complies with the manufacturer's instructions in this respect.
After use the sleeves and adaptors in centrifuge rotors should be removed to allow
thorough cleaning of rotors and accessories and so prevent corrosion.
Special care is necessary when using infective material in centrifuges. Containers,
when used with such materials, should be closed while being centrifuged and sterilised
immediately after use, using non-corrosive means.
NOTE: Sealed containers and related components are intended to be part of
biosafety systems such as are specified in international and national
biosafety guide lines, and cannot be relied on as the only means of safeguarding
workers and the environment when handling pathogenic
micro-organisms.
Care should be taken to preserve intact, sets of accessories which have been supplied
as sets, in which all the members possess closely similar weights.
It is advisable to have the centrifuge checked by a competent engineer, preferably the
manufacturer's representative, at least every six months.
Carbon brushes, whilst being of the highest quality obtainable are expressly excluded
from the guarantee. A spare set is included in the accessory pack. The method of
replacement is detailed in section 6.7 of this manual.

GENERAL DESCRIPTION 8
2. GENERAL DESCRIPTION
The Centaur 2 centrifuge is CE marked in line with required European Directives
for Electromagnetic and Low Voltage Compatibility, see “Declaration of
Conformity” for EC Directive/standard used.
120v units designed for CSA approval to the following standards:
CAN/CSA C22.2 No. 1010.1-92
CAN/CSA C22.2 No. 1010.2.020-94
INDEPENDENT SPEED SENSING - 120 volt Machines only
To comply with certain USA standards the 120 volt machines are fitted with a
small window in the cover. This permits independent speed check directly from the
rotor with use of an optically coupled tachometer.

GENERAL DESCRIPTION 9
2.1 Controls And Indicators
Figure 1.
Control Panel of the Centaur 2 Centrifuge
1. The Power On rocker switch, when on (switch illuminated) connects power
through to various circuits and components within the centrifuge.
2. The Fuse Holder carries a 20mm long, 5 Amp glass cartridge fuse. It is easily
removable.
3. The Timer control allows a run period up to 30 minutes-selected by turning the
knob clockwise. When the time selected has run out, the rotor will automatically
run down to a stop. If required, the knob may be returned (anti-clockwise) to a
lesser time or to the Off position at will. It cannot be turned anti-clockwise
between the 'Hold' and '30' 'positions. The Hold position switches the centrifuge
for continuous running until manually reset to Off.
4. The Rev/min indicator is a digital display giving continuous read-out of the
rotational speed of the rotor, rounded off to the nearest hundred rev/min, e.g.
2500, 3200.
5. The Speed control allows selection of any speed between 300 rev/min and the
maximum allowed for the rotor in use (see section 4.5 Rotors And Accessories
Tables) as indicated on the Rev/min digital display.
6. The Imbalance indicator lamp (Red) when on, gives warning that the rotor is
misloaded to a marked degree. In this event, drive to the rotor will cease and
the rotor will run down to a stop. Loading and balance must be checked and
corrected before re-starting the centrifuge.
7. The Lid Unlocked indicator lamp (Amber) when on, indicates that the rotor is
at a standstill and the lid may be opened safely. When the rotor is spinning the
lamp remains off and the lid is locked.

GENERAL DESCRIPTION 10
2.2 Centrifuge Bowl
The centrifuge bowl is easily removable for cleaning or disinfection purposes see
section 6 (Maintenance).
2.3 Opening Lid Manually
An electrical interlock prevents the lid being opened while the rotor is turning, or
when the power is disconnected. If access to the rotor is required during a power
failure, insert the Lid Lock Release Key (supplied with accessories) to its fullest
extent, into the small hole on the top of the lid, near the front; move the point
towards the rear against a slight spring pressure to actuate the lid lock
mechanism. Press the lid actuator to the right and open the lid.
The lid is friction-controlled, to remain open at any intermediate position desired.
Front
Figure 2.
Manual Over-ride of Lid Lock
2.4 Specifications
Dimensions
Height 336mm (with lid open - 470mm)
Width 436mm
Depth 487mm
Weight 36kg (without rotor)
Power Supply
Input voltage and frequency.
Cat. No. MSB020.CX1.5 220/240V 50/60 Hz.
Cat. No. MSB020.CX1.1 110/120V 50/60 Hz.
Operating
Humidity MRH 80% up to 31°C decreasing linearly to 50% RH at 40°C
Altitude Up to 2000M
NOTE: Motor, as fitted, contains overtemperature cut-out device.

GENERAL DESCRIPTION 11
Accessories Supplied With The Centrifuge
Part No. Description Quantity
32600.019 Fuse 5A (20mm) 1
76600.004 Lid Lock Release Key 1
88110.024 Lid Seal Insertion Tool 1
71100.493 Operating Manual 1
71100.958 Guarantee Card 240V 1
71100.1052 Guarantee Card 120V 1
82120.143 Spindle Nut 1
(for Rotors 34121-607, 34117-603, 34117-604 only)

INSTALLATION 12
3. INSTALLATION
IMPORTANT: The rotor must not be fitted when moving or during transit.
3.1 Preparation
Remove the centrifuge from its packing and place it on a rigid, level surface.
Check that the available power supply corresponds to that stated on the voltage
plate fixed to the rear panel of the centrifuge.
NOTE: (i) An electrical interlock prevents the lid being opened unless the
centrifuge is connected to the power supply.
(ii) It is important that, at least, 100mm clearance is allowed at the
sides and rear of the centrifuge when placed in the final operating
position.
NOTE: Laboratory management procedures should require that no person or
any hazardous materials are within a 300mm boundary while the
centrifuge is operating.
3.2 Connecting To 3 Pin Plug
Connect the 3-core cable to a 3-pin plug fitted with a 5 Amp fuse as follows:
WARNING! This equipment must be earthed.
Brown wire to Live (L) Terminal
Blue wire to Neutral (N) Terminal
Yellow/Green wire to Earth (E) Terminal
Connect the centrifuge to the power supply and press the Power switch on. The
Power On and the Lid Unlocked indicators will come on. Push the lid lock actuator
to the right and open the lid.
NOTE: BS EN 61010-2-020 ‘Particular Requirements for Centrifuges’ states that
a remote switch, preferably adjacent to the room exit is a requirement
in case of unit malfunction.

INSTALLATION 13
3.3 Recommendation For Securing Centrifuge
A Fixing Kit for securing the Centaur 2 centrifuge to a suitably sound worktop is for
securing centrifuge available from MSE as an optional accessory. It consists of an
anchor bracket which is secured to the bench, or table, by two screws with nuts
and washers; and two screws which screw into the body of the centrifuge to
secure it to the bracket. See Figure 3.
Figure 3
Securing Centrifuge to work surface using Bench fixing Kit
(Part No. 41159.188)
If the restraint kit is not used to secure the centrifuge on the bench then, it is the
recommendation of BS EN61010-2-020 that a clearance of 300mm is allowed
around the base of the centrifuge when in the final operating position.
NOTE: Laboratory management procedures should require that no person or any
hazardous materials are within a 300mm boundary while the centrifuge is
operating.
Figure 3a Recommended Clearances
Note: 75mm if solid surface (i.e. wall) otherwise 300mm

ROTORS AND ACCESSORIES 14
4. ROTORS AND ACCESSORIES
4.1 Installation Of Rotor
Before fitting a rotor to the centrifuge ensure that the drive shaft is lightly smeared
with petroleum jelly. Check that the rotor is clean - particularly pockets in angle
rotors.
Locate the rotor on the drive shaft and, ensuring that the correct spindle nut for the
rotor in use is employed (see sections 0 & 4.5), engage and tighten the spindle nut
finger tight.
4.2 Removal Of Rotor
Press Power switch off. Open the centrifuge lid. Remove all rotor accessories, i.e.
buckets, trunnions etc. Loosen the spindle nut a few turns, grip the rotor as
illustrated in Figure 4 and pull upwards with the fingers whilst gently rocking the
rotor and applying downward pressure with the thumbs, to release it from the drive
shaft. Remove the nut and lift the rotor free.
Note: Do not attempt to loosen the rotor by tapping on the centrifuge motor
spindle.
Figure 4.
Removing Rotor from Drive Shaft

ROTORS AND ACCESSORIES 15
4.3 Loading The Rotor
The rotors must carry a full complement of cups/buckets and/or trunnion rings, but
all cups/buckets need not be loaded. Loads must be placed symmetrically about
the rotor and opposing loads should balance to within 2 grams. Where possible,
balancing by sight is usually sufficient.
Before loading centrifuge tubes ensure that the appropriate colour coded-adapter
or rubber cushion is correctly positioned in the cup/bucket. Check that all tubes
project equally from the upper surface of the rotor.
Finally, if using a swing-out rotor, check that all cups of trunnion rings swing freely.
If necessary, apply a light smear of petroleum jelly to the rotor pivot slots.
Failure to load the rotor correctly can result in serious imbalance and possible
damage to the centrifuge.
Biologically hazardous material should only be centrifuged in sealed
buckets or cups.
4.4 Rotor Speed
Maximum Speeds of rotors (See section 4.5) are calculated on the basis of tubes
filled with a sample of specific gravity 1.2. If liquids of higher specific gravity are
used, the maximum speed of the rotor must be reduced according to the formula:
Where M = New maximum speed
N = Maximum rotor speed at 1.2 specific gravity
S = Specific gravity of sample used

ROTORS AND ACCESSORIES 16
4.5 Rotors And Accessories Tables
The centrifuge complies with the requirements of BS4402 only when fitted with one of the following rotors.
* Max. rev/min at 240V or 110V ** Supplied as standard with buckets # Available as spares
Haem. Haematocrit tube Wass. Wasserman glass tube
4.5.1 4 Place Swing out rotor
43124-126
(includes spindle nut)
Cup
(Set of 4) Adaptor (Set of 4) Rotor Capacity Max.* Speed Max. RCF Max. Tube Size
Dia
(mm) Ht (mm)
Sealed Cup
43551-121 - 4 x 200ml 3300 2000 57 116
43551-121 34159-302
(brown) 4 x 100ml 3300 2000 39.5 113
43551-121 34159-301
(yellow) 4 x 50ml 3300 2000 29 113
43551-121 34159-304
(green) 28 x 15ml 3300 2000 17 110
43551-121 34159-303
(grey) 16 x 10ml DSS 3300 2000 16.5 105
43551-121 34159-305
(orange) 36 x 13∅mm 3300 2000 13 110
43551-121 34159-306
(blue) 48 x 12 ∅mm 3300 2000 12 110
Open Cup
34421-639 As above As above 3600 2200

ROTORS AND ACCESSORIES 17
4.5.2 4 Place Swing out rotor
34121-607
Bucket Trunnion Adaptor/
Cushion Rotor Capacity Max.* Speed Max. RCF Max. Tube Size
Dia
(mm) Ht (mm)
34411-912 34134-604 34142-105** 4 x 100ml 3500 2246 42 125
Sealing cap 34144-308 4 x 50ml 3500 2246 29 120
43561-156 can be 34151-302 8 x 15ml 3500 2246 17 118
used if required 34153-302 20 x 7ml 3500 2246 13 118
34134-605 34142-104** 4 x 50ml 4200 3130 30 118
34411-909 34148-705 4 x 50ml 4200 3130 conical 29 112
Sealing cap assy 34141-114 4 x 1oz 4200 3130 Glass
43561-606 can be 34141-115 4 x 1oz 4200 3130 Sterilin
used if required 34144-307 4 x 15ml 4200 3130 17.5 110
34153-304 24 x Haem 4200 3130 7.7 120
34151-301 8 x Wass 4200 3130 12.7 120
34411-904 34136-102 34142-101** 8 x 15ml 4000 2612 17 120
34136-103 34142-101** 16 x 15ml 3400 2000 17 120
43161-103 16 x 15ml 3400 2000 conical 17 115
34148-101 16 x Haem. 3400 2000 7.7 120
34146-104 16 x 5 or 3ml 3400 2000 13 120
34146-103 16 x 2ml 3400 2000 12 100
34146-102 16 x 0.5 or 1ml 3400 2000 9 100

ROTORS AND ACCESSORIES 18
4.5.3 8 Place Swing out rotor
43121-111
(includes buckets and spindle nut)
Bucket Trunnion Adaptor/
Cushion Rotor Capacity Max.* Speed Max. RCF Max. Tube Size
Dia
(mm) Ht (mm)
34411-905# 34142-101** 8 x 15ml 3500 2200 17 115

ROTORS AND ACCESSORIES 19
4.5.4 8 Place Angle rotor
34117-603
Bucket Trunnion Adaptor/
Cushion Rotor Capacity Max.* Speed Max. RCF Max. Tube Size
Dia
(mm) Ht (mm)
34411-909 34142-104** 8 x 50ml 4600 3120 29 110
34411-909 34148-705 8 x 50ml 4600 3120 conical 29 110
34411-909 34141-114 8 x 1oz 4600 3120 Glass
34411-909 34141-115 8 x 1oz 4600 3120 Sterilin
34411-909 34144-307 8 x 15ml 4600 3120 17.5 110
34411-909 34153-304 48 x Haem. 4600 3120 7.7 120
34411-909 34151-301 16 x Wass. 4600 3120 12.7 120

ROTORS AND ACCESSORIES 20
4.5.5 12 Place Angle rotor
34117-604
Bucket Trunnion Adaptor/
Cushion Rotor Capacity Max.* Speed Max. RCF Max. Tube Size
Dia
(mm) Ht (mm)
34411-904 34142-101** 12 x 15ml 4600 3000 17 110
34411-904 43161-103 12 x 15ml 4600 3000 conical 17 110
34411-904 34148-101 12 x Haem. 4600 3000 7.7 110
34411-904 34146-104 12 x 5 or 3ml 4600 3000 13 120
34411-904 34146-103 12 x 2ml 4600 3000 12 100
34411-904 34146-102 12 x 0.5 or 1ml 4600 3000 9 100