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Koki Holdings Co.,Ltd.

Rotors for CP-NX Series



New Rotor

  • Swinging Bucket Rotor model P32ST2
  • The new swinging bucket rotor model P32ST2 can offer greater performance and specifications than our former model P28S2 (max. speed : 28,000rpm, max. RCF : 193,000xg). The P32ST2 rotor separates samples contained in six 16mL (nominal volume) tubes at a time. In addition, the P32ST2 has adapted unique "Top Loading System" to load and unload the buckets to/from the rotor body. It is easier way than a way of the conventional swinging bucket rotors and will prevent from unexpected accident caused by the wrong setting of the buckets to the rotor body. The design of the bucket and its cap has been also improved. The titanium bar on the cap is for easy tightening/opening the cap to/from the bucket. Design of the rotor body was improved to be held by hands easily. Furthermore, the additional handle is not required to set/unload the rotor onto/from the drive shaft of the ultracentrifuge.

    Swinging Bucket Rotor model P32ST2
Model P32ST2
Max. Speed (rpm) 32,000
Max.RCF (xg) 193,000
K-factor (at max. speed) 216
Max. Nominal Capacity 16mL x 6 tubes
Max. Actual Capacity 17.0mL x 6 tubes (with 16PET Tube)
Part No. 9023190M(*1)
Applicable Ultracentrifuges CP-NX(*2), CP-WX(*3), CP-MX(*3)
*1
with RLM adaptor model only
*2
To be used with existing CP-NX series ultracentrifuge, it requires an upgrade of the software. (chargeable)
*3
To be used with CP-WX/MX series ultracentrifuge, ROM of the ultracentrifuge should be exchanged. (chargeable)

  • Swinging Bucket Rotor model P32ST
  • Our new swinging bucket rotor model P32ST can offer greater performance and specifications than our existing model P28S (max. speed : 28,000rpm, max. RCF : 141,000xg). Even though nominal capacity is remained as 40mL x 6 tubes, the P32ST has increased its Max. speed to 32,000rpm and its Max. RCF to 180,000xg. In addition, P32ST has adopted unique "Top Loading System" to load and unload the buckets to/from the rotor body. It is easier way than a way of the conventional swinging bucket rotors and will prevent from unexpected accident caused by the wrong setting of the buckets to the rotor body. The design of the bucket and its cap has been also improved. The grooved surface of the bucket is for easy holding by a hand and titanium bar on the cap is for easy tightening/opening the cap to/from the bucket. The rotor body has reduced its weight to 7.1kg and improved its shape to be held by hands. So the additional handle is not required to set/unload the rotor onto/from the drive shaft of the ultracentrifuge.

    Swinging Bucket Rotor model P32ST
Model P32ST
Max. Speed (rpm) 32,000
Max.RCF (xg) 180,000
K-factor (at max. speed) 198
Max. Nominal Capacity 40mL x 6 tubes
Max. Actual Capacity 38.7mL x 6 tubes (with 40PC Tube)
Part No. 9023180M
Applicable Ultracentrifuges CP-NX (*1), CP-WX (*2), CP-MX (*2)
*1
To be used with CP-NX whose MFG No. is earlier than 1,000, it requires an upgrade of the software. (chargeable)
*2
To be used with CP-WX/MX series ultracentrifuge, ROM of the ultracentrifuge should be exchanged. (chargeable)

  • Fixed Angle Rotor model P21A2
  • The new fixed angle rotor model P21A2 is a successor model of P19A. The P21A2 offers faster max. speed. (max. speed : 21,000rpm / max. RCF : 71,000 xg) and lighter weight (11.4kg) than P19A (18.7kg) with offering the same nominal capacity of P19A.
    The nominal capacity of P21A2 rotor is 230ml x 6 bottles* for larger volume centrifugation. Due to greater RCF of P21A2, P21A2 can reduce centrifugation time over 25% comparing the one of P19A. (* actual volume is 210ml x 6 bottles)

    Fixed Angle Rotor model P21A2
Model P21A2 P19A2 *1
Max. Speed (rpm) 21,000 19,000
Max.RCF (xg) 71,000 55,100
K-factor (at max. speed) 486 754
Max. Nominal Capacity 230ml x 6 bottles 230ml x 6 bottles
Max. Actual Capacity 210ml x 6 bottles 225ml x 6 bottles
Tube Cavity Angle 26ºC 26ºC
Rotor Weight (kg) 11.4 18.7
Part No. 9023171M 9022221M
Applicable Ultracentrifuges CP-NX / CP-WX / CP-MX series *2 CP-NX / CP-WX / CP-MX / CP-α series
*1
Sales discontinued
*2
To use P21A2 with CP-WX or CP-MX series, ROM in CP-WX or CP-MX series may be exchanged based on its MFG number. Please inform model name and MFG No. of the ultracentrifuge to HKK to check if the ROM should be exchanged or not before placing the rotor. If necessary, please order the ROM (P/N : 98002999) with P21A2
Note : Visual balancing with 5mm sample surface difference between the tubes is not applicable to the P21A2 rotor. Max. allowable imbalance tolerance is 7g between the tubes, so it is equivalent to 2mm sample surface difference between the tubes. Due to characteristics of the sample, the number of sample surface difference between the tubes may be lower than 2mm. Intentional high-imbalance operation may cause damages to the ultracentrifuge and/or the rotor.


  • Applicable Bottle & Cap
Part No. Description Remarks
336621A 230PA Bottle Assy (10pcs/set)  
S413248B AL Cap (2) Assy (2pcs/set) Exclusive for P21A2
S401809A O-ring (10pcs/set) As a spare of AL Cap (2) Assy
Remarks : 6 sets of 230PA Bottle, AL Cap (2) and O-ring are included in standard accessories of P21A2 rotor.

Fixed Angle Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P100AT2 * 9023113M 100,000 803,000 6.5 x 8 18 Separation of microscopic particles and lipoprotein
P90AT *+ 9023053M 90,000 700,000 12 x 8 25 Separation of cell organelles, Plasmid DNA and RNA
Rapid separation of intermediate volume sample
P80AT * 9023093M 80,000 615,000 12 x 8 27
P70AT2 * 9022753M 70,000 452,000 12 x 12 36
P70AT * 9022623M 70,000 505,000 40 x 8 44 Rapid separation of intermediate-to-large volume sample
P65A *+ 9022313M 65,000 370,000 12 x 10 48 Separation of cell organelles, Plasmid DNA and RNA
P50AT4 + 9022633M 50,000 316,000 *1 6.5 x 44 32 *1 Separation of lipoprotein
P50AT2 * 9022633M 50,000 303,000 40 x 12 70 Rapid separation of intermediate-to-large volume sample
P50A3 9023140M 50,000 252,000 1.5 x 24 33 Rapid pelleting micro volume samples
P45AT * 9022643M 45,000 235,000 94 x 6 130 Rapid separation of large volume samples
P42AT + 9022651M 42,000 223,000 0.23 x 72 12 Rapid separation of lipoprotein for examination
P32AT + 9023150M 32,000 111,000 12 x 32 186 Simultaneous processing of many specimens
P27A + 9023121M 27,000 106,000 160 x 6 352 Separation of large volume samples
P21A2 + 9023171M 21,000 71,000 236 x 6 486

Neo Angle Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P90NT *+ 9023073M 90,000 646,000 5 x 8 10 Rapid separation of Plasmid DNA and RNA
P65NT *+ 9024153M 65,000 402,000 12 x 10 23
P65NT2 *+ 9023103M 65,000 431,000 5 x 18 15 Processing of many tubes of Plasmid DNA

Vertical Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P100VT *+ 9023063M 100,000 700,000 5 x 8 6 Rapid separation of Plasmid DNA
P65VT2 *+ 9023023M 65,000 416,000 5 x 16 10 Separation of plasmid DNA etc.
by the sedimentation equilibrium centrifugation
P65VT3 *+ 9023033M 65,000 402,000 12 x 10 13
P50VT2 *+ 9023083M 50,000 243,000 40 x 8 36 Density gradient centrifugation of large volume samples

Swinging Bucket Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P65ST + 9022391M 65,000 419,000 5 x 3 48 Density gradient centrifugation of Protein, DNA and RNA etc.
P56ST + 9022551M 56,000 409,000 4 x 6 54 Density gradient centrifugation of micro volume samples
P55ST2 + 9022771M 55,000 366,000 5 x 6 50
P40ST 9022371M 40,000 284,000 13 x 6 139 Density gradient centrifugation of intermediate volume samples
P32ST 9023180M 32,000 180,000 40 x 6 198
P28S *2 9022881M 28,000 141,000 40 x 6 252

Zonal Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P32ZT + 9023160M 32,000 102,000 1,690 ml 363 Large-scale purification of protein and virus particles
by density gradient centrifugation

Continuous Flow Rotor

Model Part No.
(w/RLM Adapter)
Max. Speed
(rpm)
Max. RCF
(xg)
Nominal
Capacity
(ml x tubes)
K-factor Main Purpose
P32CT + 9022660M *3 32,000 102,000 430 ml 42 Continuous concentration of large virus particles
Notes:
1
*: Tubes, caps and adapters are not included in the standard accessories. Please order them separately.
2
+: The rotor is made-to-order item.
3
*1 :Indicated value is for outside tube cavity. Inside tube cavity has different values.
4
*2 Optional bucket (P/N 34607A : 16Ti Bucket Assy) is available for 16ml x 6 tubes nominal capacity.
5
Carbon fiber rotors cannot be used with CP-NX series.
6
*3: Part No. 9022660M is an excludive model for CP-NX / CP-WX / CP-MX series. To use the P32CT with CP-NX / CP-WX / CP-MX series, optional accessory assy is mandatory required. (sold separately) Part number of the optional accessory assy for CP-NX series is S205643A, part number of the optional accessory assy for CP-WX and CP-MX series is S205643C.
7
Rotors with model name including the letter T are made of titanium alloy. Rotors with model name not including the letter T are made of aluminum alloy. All buckets for swinging bucket rotors are made of titanium alloy.
8
To use zonal rotor model P32ZT, seal attachment assy model RPZ-S (P/N 90130600) is required. (order separately)
9
When using a seal tube in the above rotors, tube sealer and respective tube rack are required. (order separately)
10
Capacity in the above table shows nominal capacity of tubes. Actual capacity in actual usage may be smaller than the nominal capacity depending on rotor structure, tube shape etc.