Super Asuwon ti Owo China Centriguge yàrá Micro Benchtop High-Speed Centrifuge (TG18-WS)
A mọ pe a ṣe rere nikan ti a ba le ni irọrun ṣe iṣeduro ifigagbaga idiyele apapọ ati anfani ti o dara julọ ni akoko kanna fun Super Asuwon ti Price China Centriguge Laboratory Micro Benchtop High-Speed Centrifuge (TG18-WS), Asiwaju aṣa ti aaye yii jẹ itẹramọṣẹ wa. afojusun.Pese awọn ojutu kilasi akọkọ jẹ aniyan wa.Lati ṣẹda kan lẹwa ìṣe, a fẹ lati ni ifọwọsowọpọ pẹlu gbogbo sunmọ awọn ọrẹ ni ile ati okeokun.Ti o ba ni anfani eyikeyi ninu awọn ọja ati awọn solusan wa, ranti lati ma duro lati pe wa.
A mọ pe a ṣe rere nikan ti a ba le ni irọrun ṣe iṣeduro ifigagbaga idiyele apapọ wa ati anfani to dara julọ ni akoko kanna funChina Centrifuge, Ga iyara Centrifuge, Ero wa ni “lati pese awọn ọja igbesẹ akọkọ ati awọn solusan ati iṣẹ ti o dara julọ fun awọn alabara wa, nitorinaa a ni idaniloju pe o ni lati ni anfani ala nipasẹ ifowosowopo pẹlu wa”.Ti o ba nifẹ si eyikeyi awọn nkan wa tabi yoo fẹ lati jiroro lori aṣẹ aṣa, ranti lati ni ominira lati kan si wa.A ti nreti lati ṣẹda awọn ibatan iṣowo aṣeyọri pẹlu awọn alabara tuntun ni ayika agbaye ni ọjọ iwaju nitosi.
LG-10M Floor duro ga iyara ti o tobi agbara refrigerated centrifuge
Ilana paramita
Iyara ti o pọju | 10000 r / min |
Iye ti o ga julọ ti RCF | 18590 xg |
Agbara to pọju | 6x1000ml(7000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃ ~ 40℃ |
Aago Range | 1 min ~ 99H59 min/inching |
Ariwo | ≤65dB (A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 32A |
Iwọn | 850x730x930(LxWxH) mm |
Iwọn | 260kg |
Agbara | 5.5KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
NO.1 Ti o wa titi-igun Rotor | 6x500ml | 10000rpm | 18590xg |
NO.2 Ti o wa titi-igun Rotor | 6x1000ml | 7000rpm | 11630xg |
NO.3 Ti o wa titi-igun Rotor | 6x300ml | 10000rpm | 16750xg |
LG-16M Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Ayipada igbohunsafẹfẹ drive motor, microcomputer Iṣakoso
• LCD & Digital àpapọ
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara pupọ.
Titiipa rotor laifọwọyi, laisi awọn eso titiipa, awọn boluti, awọn wrenches, bbl O jẹ ailewu, rọrun ati yara lati mu ati gbe taara.
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• Konpireso ti a ko wọle, awọn firiji ti ko ni CFC, iṣakoso agbegbe ilọpo meji fun firiji ati alapapo, kongẹ ni iṣakoso iwọn otutu
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-ara irin, irin-ila mẹta fun ailewu
Ilana paramita
Iyara ti o pọju | 16000 r / min |
Iye ti o ga julọ ti RCF | 27520 xg |
Agbara to pọju | 6x500ml(8000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃~40℃ |
Aago Range | 1 min ~ 99H59 min/inch |
Ariwo | ≤65dB (A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 32A |
Iwọn | 850x730x930 (LxWxH) mm |
Iwọn | 260 kg |
Agbara | 4,5 KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
RARA.1 Ti o wa titi-igun Rotor | 6x50ml | 16000rpm | 27520xg |
RARA.2 Ti o wa titi-igun Rotor | 24× 1.5 / 2.2ml | 16000rpm | 25520xg |
RARA.3 Rotor-igun ti o wa titi | 16x10ml | 16000rpm | 27500xg |
RARA.4 Ti o wa titi-igun Rotor | 6x100ml | 14000rpm | 23600xg |
RARA.5 Rotor-igun ti o wa titi | 8x50ml | 14000rpm | 23270xg |
RARA.6 Ti o wa titi-igun Rotor | 6x300ml | 10000rpm | 16750xg |
RARA.7 Ti o wa titi-igun Rotor | 6x500ml | 8000rpm | 11860xg |
RARA.8 Yiyi-jade | 4x750ml | 4000rpm | 3500xg |
LG-18 Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Ayipada igbohunsafẹfẹ drive motor, microcomputer Iṣakoso
• LCD & Digital àpapọ
• Titiipa ideri itanna, aabo aiṣedeede
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara ju
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Rọrun lati rọpo rotor pẹlu ọna ti o wa titi rirọ pataki.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• konpireso wole, CFC-free refrigerants, ė Circuit iṣakoso fun refrigeration ati alapapo.
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-ara irin, irin-ila mẹta fun ailewu
Ilana paramita
Iyara ti o pọju | 18000 r / min |
Iye ti o ga julọ ti RCF | 22500 xg |
Agbara to pọju | 4x250ml(4500rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃ ~ 40℃ |
Aago Range | 1 min ~ 99H59 min/inching |
Ariwo | ≤60dB(A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 15A |
Iwọn | 650x550x840 (LxWxH) mm |
Iwọn | 160 kg |
Agbara | 1,8 KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
NO.1 Ti o wa titi-igun Rotor | 12×1.5ml/2.2ml | 18000rpm | 22500xg |
RARA.2 Ti o wa titi-igun Rotor | 12x5ml | 16000rpm | 20790xg |
RARA.3 Rotor-igun ti o wa titi | 24× 1.5 / 2.2ml | 15000rpm | 21630xg |
RARA.4 Ti o wa titi-igun Rotor | 12x10ml | 14000rpm | 18110xg |
RARA.5-1 Ti o wa titi-igun Rotor | 6x50ml (yika isalẹ) | 12000rpm | 15970xg |
RARA.5-2 Ti o wa titi-igun Rotor | 6x50ml (conical isalẹ) | ||
RARA.6 -1 Ti o wa titi-igun Rotor | 4x100ml | 10000rpm | 10640xg |
RARA.6 -2 Ti o wa titi-igun Rotor | 8x50ml | ||
No.6-3 Ti o wa titi-igun Rotor | 12x15ml | ||
RARA.7 Ti o wa titi-igun Rotor | 6x10ml | 16000rpm | 19070xg |
RARA.8 Ti o wa titi-igun Rotor | 8x15ml | 12500rpm | 15580xg |
NO.9 Golifu-jade Microplate Rotor | 2x3x96 iho | 4000rpm | 1970xg |
RARA.10 Golifu-jade Ayipo | 4x250ml Pls tọka si ohun ti nmu badọgba ti 4x250ml ti LD-5M | 4500rpm | 3720xg |
LG-21M Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Ayipada igbohunsafẹfẹ wakọ motor, microcomputer Iṣakoso
• LCD & Digital àpapọ
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara pupọ.
Titiipa rotor laifọwọyi, laisi awọn eso titiipa, awọn boluti, awọn wrenches, bbl O jẹ ailewu, rọrun ati yara lati mu ati gbe taara.
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• Konpireso ti a ko wọle, awọn firiji ti ko ni CFC, iṣakoso agbegbe ilọpo meji fun firiji ati alapapo, kongẹ ni iṣakoso iwọn otutu
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-ara irin, irin-ila mẹta fun ailewu
Ilana paramita
Iyara ti o pọju | 21000 r / min |
Iye ti o ga julọ ti RCF | 47400 xg |
Agbara to pọju | 6x500ml(10000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃~40℃ |
Aago Range | 1 min~99H 59 min/inching |
Ariwo | ≤65dB (A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 32A |
Iwọn | 850x730x930 (LxWxH) mm |
Iwọn | 260 kg |
Agbara | 5 KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
RARA.1 Ti o wa titi-igun Rotor | 16x10ml | 21000rpm | 47400xg |
RARA.2 Ti o wa titi-igun Rotor | 24× 1.5 / 2.2ml | 21000rpm | 43960xg |
RARA.3 Rotor-igun ti o wa titi | 6x50ml | 20000rpm | 44800xg |
RARA.4 Ti o wa titi-igun Rotor | 8x50ml | 18000rpm | 38460xg |
RARA.5 Rotor-igun ti o wa titi | 6x100ml | 16000rpm | 30910xg |
RARA.6 Ti o wa titi-igun Rotor | 8x100ml | 12000rpm | 19830xg |
RARA.7 Ti o wa titi-igun Rotor | 4x300ml | 14000rpm | 28150xg |
RARA.8 Ti o wa titi-igun Rotor | 6x300ml | 12000rpm | 24110xg |
RARA.9 Ti o wa titi-igun Rotor | 6x500ml | 10000rpm | 18590xg |
NO.10 Golifu-jade ELISA Awo Rotor | 2x3x96ml iho | 4000rpm | 1970xg |
RARA.11 Yiyi-jade golifu | 4x50ml | 10000rpm | 16200xg |
RARA.12 Yiyi-jade | 4x30ml | 13000rpm | 23800xg |
RARA.13 Yiyi-jade | 4x4x5ml | 12000rpm | 11900xg |
LG-22 Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Ayipada igbohunsafẹfẹ drive motor, microcomputer Iṣakoso
• LCD & Digital àpapọ
• Titiipa ideri itanna, aabo aiṣedeede
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara pupọ.
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Rọrun lati rọpo rotor pẹlu ọna ti o wa titi rirọ pataki.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• konpireso wole, CFC-free refrigerants, ė Circuit iṣakoso fun refrigeration ati alapapo.
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-ara irin, irin-ila mẹta fun ailewu
Ilana paramita
Iyara ti o pọju | 22000 r / min |
Iye ti o ga julọ ti RCF | 34700 xg |
Agbara to pọju | 4x750ml(4000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃ ~ 40℃ |
Aago Range | 1 min ~ 99H59 min/inching |
Ariwo | ≤60dB(A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 15A |
Iwọn | 650x550x840(LxWxH) mm |
Iwọn | 160 kg |
Agbara | 1,8 KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF | ||
RARA.2 Ti o wa titi-igun Rotor | 12x5ml | 17000rpm | 22330xg | ||
RARA.3 Rotor-igun ti o wa titi | 24× 1.5 / 2.2ml | 16500rpm | 27140xg | ||
RARA.4 Ti o wa titi-igun Rotor | 12x10ml | 15000rpm | 20160xg | ||
RARA.5-1 Ti o wa titi-igun Rotor | 6x50ml yika isalẹ | 13000rpm | 18740xg | ||
RARA.5-2 Ti o wa titi-igun Rotor | 6x50ml conical isalẹ | 13000rpm | 18740xg | ||
RARA.6 -1 Ti o wa titi-igun Rotor | 4x100ml | 11000rpm | 12870xg | ||
RARA.6 -2 Ti o wa titi-igun Rotor | 8x50ml | ||||
No.6-3 Ti o wa titi-igun Rotor | 12x15ml conical isalẹ | ||||
NO.7 Golifu-jade Microplate Rotor | 2x3x96 iho | 4000rpm | 1970xg | ||
RARA.8 Yiyi-jade |
| 4x250ml pls tọkasi ohun ti nmu badọgba 4X250ML ti LD-5M | 4500rpm | 3720xg | |
Adapter
| 8x50ml | ||||
4x100ml | |||||
36x10ml | |||||
40x7ml igbale Vacuum ẹjẹ gbigba tube
| |||||
20x15ml | |||||
RARA.9 Golifu-jade Ayipo | 4x500ml pls tọka si 4X500ml ohun ti nmu badọgba ti LD-5M | 4200rpm | 3550xg | ||
Adapter
| 12x50ml | ||||
36x15ml | |||||
76× 2-7ml igbale Vacuum ẹjẹ gbigba tube
|
| ||||
RARA.10 Golifu-jade Ayipo | 4x750ml pls tọkasi ohun ti nmu badọgba 4X750ml ti LD-5M | 4000rpm | 3500xg | ||
Adapter | 12x100ml | ||||
20x50ml | |||||
48x15ml |
LG-22M Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Ayipada igbohunsafẹfẹ drive motor, microcomputer Iṣakoso
• LCD & Digital àpapọ
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara pupọ.
Titiipa rotor laifọwọyi, laisi awọn eso titiipa, awọn boluti, awọn wrenches, bbl O jẹ ailewu, rọrun ati yara lati mu ati gbe taara.
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• konpireso wole, CFC-free refrigerants, ė Circuit iṣakoso fun refrigeration ati alapapo.
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-irin ara, mẹta-Layer, irin fun ailewu
Ilana paramita
Iyara ti o pọju | 22000 r / min |
Iye ti o ga julọ ti RCF | 50685 xg |
Agbara to pọju | 6x500ml(10000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃~40℃ |
Aago Range | 1 min ~ 99H59 min/inch |
Ariwo | ≤65dB (A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 32A |
Iwọn | 850x730x930 (LxWxH) mm |
Iwọn | 260 kg |
Agbara | 5KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
RARA.1 Ti o wa titi-igun Rotor | 16x10ml | 22000rpm | 50685xg |
RARA.2 Ti o wa titi-igun Rotor | 24× 1.5 / 2.2ml | 21000rpm | 43960xg |
RARA.3 Rotor-igun ti o wa titi | 6x50ml | 20000rpm | 44800xg |
RARA.4 Ti o wa titi-igun Rotor | 8x50ml | 18000rpm | 38460xg |
RARA.5 Rotor-igun ti o wa titi | 6x100ml | 16000rpm | 30910xg |
RARA.6 Ti o wa titi-igun Rotor | 8x100ml | 12000rpm | 19830xg |
RARA.7 Ti o wa titi-igun Rotor | 4x300ml | 14000rpm | 28150xg |
RARA.8 Ti o wa titi-igun Rotor | 6x300ml | 12000rpm | 24110xg |
RARA.9 Ti o wa titi-igun Rotor | 6x500ml | 10000rpm | 18590xg |
NO.10 Golifu-jade Microplate Rotor | 2x3x96 iho | 4000rpm | 1970xg |
RARA.11 Yiyi-jade golifu | 4x50ml | 10000rpm | 16200xg |
RARA.12 Yiyi-jade | 4x30ml | 13000rpm | 23800xg |
RARA.13 Yiyi-jade | 4x4x5ml | 12000rpm | 11900xg |
LG-25M Pakà duro ga iyara ti o tobi agbara refrigerated centrifuge
Awọn ẹya ara ẹrọ & Awọn anfani
• Awọn ọkọ ayọkẹlẹ awakọ igbohunsafẹfẹ iyipada, iṣakoso kọnputa
• LCD & Digital àpapọ
• Idanimọ rotor laifọwọyi lati ṣe idiwọ lati iyara pupọ.
Rotor titiipa aifọwọyi, gbe ati mu ni irọrun
• Awọn ipele 40 ti isare ati idinku, ati pe o le fipamọ awọn eto olumulo 12.
• Ṣiṣayẹwo aṣiṣe aifọwọyi
• konpireso wole, CFC-free refrigerants, ė Circuit iṣakoso fun refrigeration ati alapapo.
• Awọn eto ti RCF le ṣeto taara.
• Ṣe agbewọle agbewọle olokiki olokiki oniyipada igbohunsafẹfẹ oludari, eyiti o le ṣakoso iyara ni deede ati ni igbesi aye iṣẹ pipẹ.
• Awọn paramita iṣẹ le ṣe atunṣe lakoko iṣiṣẹ.
• Gbogbo-ara irin, irin-ila mẹta fun ailewu
Ilana paramita
Iyara ti o pọju | 25000 r / min |
Iye ti o ga julọ ti RCF | 64800 Xg |
Agbara to pọju | 4x1000ml(8000rpm) |
Iyara Yiye | ± 10r / iseju |
Yiye iwọn otutu | ±1℃ |
Iwọn otutu | -20℃~40℃ |
Aago Range | 1 min ~ 99H59 min/inch |
Ariwo | ≤65dB (A) |
Ibi ti ina elekitiriki ti nwa | AC 220V 50HZ 32A |
Iwọn | 850x730x930 (LxWxH) mm |
Iwọn | 280 kg |
Agbara | 5KW |
Rotor Technical Data
Rotor | Agbara | Iyara ti o pọju | Iye ti o ga julọ ti RCF |
RARA.1 Ti o wa titi-igun Rotor | 24× 1.5 / 2.2ml | 25000rpm | 64800Xg |
RARA.2 Ti o wa titi-igun Rotor | 16x10ml | 23000rpm | 56880Xg |
RARA.3 Rotor-igun ti o wa titi | 8x50ml | 21000rpm | 52360Xg |
RARA.4 Ti o wa titi-igun Rotor | 6x300ml | 12000rpm | 24110Xg |
RARA.5 Rotor-igun ti o wa titi | 6x500ml | 10000rpm | 18590Xg |
RARA.6 Ti o wa titi-igun Rotor | 4x1000ml | 8000rpm | 12040Xg |
RARA.7 Ti o wa titi-igun Rotor | 12x50ml | 14000rpm | 30070Xg |
RARA.8 Yiyi-jade | 4x750ml | 5000rpm | 5600Xg |
RARA.9 Golifu-jade Ayipo | 6x50ml | 10000rpm | 15680Xg |
Gẹgẹbi awọn iwulo rẹ, ọpọlọpọ awọn pato ti Awọn ẹrọ iyipo-igun ti o wa titi, awọn rotors swing-out, awọn rotors ṣiṣan lilọsiwaju ati awọn rotors pataki le jẹ adani. |
A mọ pe a ṣe rere nikan ti a ba le ni irọrun ṣe iṣeduro ifigagbaga idiyele apapọ ati anfani ti o dara julọ ni akoko kanna fun Super Asuwon ti Price China Centriguge Laboratory Micro Benchtop High-Speed Centrifuge (TG18-WS), Asiwaju aṣa ti aaye yii jẹ itẹramọṣẹ wa. afojusun.Pese awọn ojutu kilasi akọkọ jẹ aniyan wa.Lati ṣẹda kan lẹwa ìṣe, a fẹ lati ni ifọwọsowọpọ pẹlu gbogbo sunmọ awọn ọrẹ ni ile ati okeokun.Ti o ba ni anfani eyikeyi ninu awọn ọja ati awọn solusan wa, ranti lati ma duro lati pe wa.
Super asuwon ti PriceChina Centrifuge, Ga iyara Centrifuge, Ero wa ni “lati pese awọn ọja igbesẹ akọkọ ati awọn solusan ati iṣẹ ti o dara julọ fun awọn alabara wa, nitorinaa a ni idaniloju pe o ni lati ni anfani ala nipasẹ ifowosowopo pẹlu wa”.Ti o ba nifẹ si eyikeyi awọn nkan wa tabi yoo fẹ lati jiroro lori aṣẹ aṣa, ranti lati ni ominira lati kan si wa.A ti nreti lati ṣẹda awọn ibatan iṣowo aṣeyọri pẹlu awọn alabara tuntun ni ayika agbaye ni ọjọ iwaju nitosi.