Plate (RCT digital)

The IKA Plate (RCT digital) has a round top made of aluminum alloy. It stirs volumes of up to 20l (H2o) and runs at speeds ranging from 50-1500rpm.

 

Strongly standing by its product and technology, IKA is offering a lifetime warranty on the magnetic stirrer – unparalleled in the industry; scientists can focus on their experiments with a reliable stir plate.

 

Some of the features are: IKA emphasizes ease-of-use by design simplicity: reduced forms and operating elements meet the modernity of smartphones: IKA not only focuses on hardened glass because of visibility, chemical resistance and safety, it also optically changes the game of a magnetic stirrer with a glass surface. The IKA Plate (RCT digital) improves over time with regular firmware updates. Using Alnico magnetic technology, the IKA Plate (RCT digital) achieves excellent temperature stability and high residual induction. It also provides for maximum vortex.  The integrated timer and counter function supports the control of kinetics and sensitive reactions; the IKA SmartTemp® function protects users intelligently and predictably.

 

€ 875,00
Referentie: 0025004601
Delivery time: 1-2 days
2 Jaar Garantie
+100 000 Producten
Premium Merken
Vijfsterrenservice
+25 Jaar Ervaring
Persoonlijk Advies
Number of stirring positions 1
Stirring quantity max. per stirring position (H2O) [l] 20
Motor rating output [W] 9
Direction of rotation right / left
Speed display set-value LCD
Speed display actual-value LCD
Speed control Turning knob
Speed range [rpm] 50 - 1500
Setting accuracy speed [rpm] 10
Stirring bar length [mm] 30 - 80
Self-heating of the set-up plate by max. stirring (RT 22°C/duration:1h) [+K]: 8
Heat output [W] 600
Temperature display set-value LCD
Temperature display actual-value LCD
Temperature unit °C / °F
Heating temperature range [°C] Room temp. + device self heating - 310
Heat control Turning knob
Temperature setting range [°C] 0 - 310
Temperature setting resolution of heating plate [K] 1
Connection for ext. temperature sensor PT1000, ETS-D5, ETS-D6
Heating rate medium [K/min] 7
Temperature setting resolution of medium [K] 1
Adjustable safety circuit [°C] 50 - 370
Set-up plate material Aluminium alloy
Set-up plate dimensions [mm] Ø 135
Automatic reverse rotation yes
Intermittend mode yes
Viscosity trend measurement yes
Break detection stirring bar no
Timer yes
pH measurement no
Graph function no
Programs no
Sensor in medium detection (Error 5) yes
Weighing function no
Set-up plate illuminated no
Speed deviation (no load,nominal voltage, at 1500rpm + 25 °C) [±%] 2
Heating rate (1l H2O in H1500) [K/min] 7
Heat control accuracy of heating plate (at 100°C) [±K] 5
Heat control accuracy with ext. PT1000 (500ml H2O in 600ml beaker,40mm stirring bar,600rpm,50°C) [±K] 0.5
Heat control accuracy with ETS-D5 (500ml H2O in 600ml beaker,40mm stirring bar,600rpm,50°C) [±K] 0.5
Heat control accuracy with ETS-D6 (500ml H2O in 600ml beaker,40mm stirring bar,600rpm,50°C) [±K] 0.2
Dimensions (W x H x D) [mm] 160 x 85 x 270
Weight [kg] 2.4
Permissible ambient temperature [°C] 5 - 40
Permissible relative humidity [%] 80
Protection class according to DIN EN 60529 IP 42
RS 232 interface yes
USB interface yes
Analog output no
Voltage [V] 220 - 230
Frequency [Hz] 50/60
Power input [W] 650
Power input standby [W] 1.6
Picture Model Name Price excl BTW Buy now Get quote
BC 1000 Couvercle pour bécher Ika BC 1000 Beaker cap ACC BC 1000 Beaker cap € 12,00
H 1000 Ika H 1000 Synthesis blocks H 1000 € 334,00
H 11 Cordon d’alimentation Ika H 11 Mains cable Euro plug ACC H 11 Mains cable Euro plug € 28,00
H 135.10 Square carrier without handle Ika H 135.10 Square carrier without handle Synthesis blocks H 135.10 Square carrier without handle € 129,00
H 135.101 Block 16 x 4 ml Ika H 135.101 Block 16 x 4 ml Synthesis blocks H 135.101 Block 16 x 4 ml € 61,00
H 135.102 Block 16 x 8 ml Ika H 135.102 Block 16 x 8 ml Synthesis blocks H 135.102 Block 16 x 8 ml € 61,00
H 135.103 Block 9 x 16 ml Ika H 135.103 Block 9 x 16 ml Synthesis blocks H 135.103 Block 9 x 16 ml € 61,00
H 135.104 Block 4 x 20 ml Ika H 135.104 Block 4 x 20 ml Synthesis blocks H 135.104 Block 4 x 20 ml € 61,00
H 135.105 Block 4 x 30 ml Ika H 135.105 Block 4 x 30 ml Synthesis blocks H 135.105 Block 4 x 30 ml € 61,00
H 135.106 Block 4 x 40 ml Ika H 135.106 Block 4 x 40 ml Synthesis blocks H 135.106 Block 4 x 40 ml € 61,00
H 135.107 Block 100 ml Ika H 135.107 Block 100 ml Synthesis blocks H 135.107 Block 100 ml € 61,00
H 135.108 Block 250 ml Ika H 135.108 Block 250 ml Synthesis blocks H 135.108 Block 250 ml € 61,00
H 135.11 Square carrier with handle Ika H 135.11 Square carrier with handle Synthesis blocks H 135.11 Square carrier with handle € 229,00
H 135.20 Flask carrier 100 ml without handle Ika H 135.20 Flask carrier 100 ml without handle Synthesis blocks H 135.20 Flask carrier 100 ml without handle € 109,00
H 135.201 Flask inlay 10 ml Ika H 135.201 Flask inlay 10 ml Synthesis blocks H 135.201 Flask inlay 10 ml € 61,00
H 135.202 Flask inlay 25 ml Ika H 135.202 Flask inlay 25 ml ACC H 135.202 Flask inlay 25 ml € 61,00
H 135.203 Flask inlay 50 ml Ika H 135.203 Flask inlay 50 ml Synthesis blocks H 135.203 Flask inlay 50 ml € 61,00
H 135.21 Flask carrier 100 ml with handle Ika H 135.21 Flask carrier 100 ml with handle Synthesis blocks H 135.21 Flask carrier 100 ml with handle € 209,00
H 135.25 Flask carrier 250 ml without handle Ika H 135.25 Flask carrier 250 ml without handle Synthesis blocks H 135.25 Flask carrier 250 ml without handle € 139,00
H 135.26 Flask carrier 250 ml with handle Ika H 135.26 Flask carrier 250 ml with handle Synthesis blocks H 135.26 Flask carrier 250 ml with handle € 239,00
H 135.30 Flask carrier 500 ml without handle Ika H 135.30 Flask carrier 500 ml without handle Synthesis blocks H 135.30 Flask carrier 500 ml without handle € 149,00
H 135.301 Flask inlay 100 ml Ika H 135.301 Flask inlay 100 ml Synthesis blocks H 135.301 Flask inlay 100 ml € 61,00
H 135.302 Flask inlay 250 ml Ika H 135.302 Flask inlay 250 ml Synthesis blocks H 135.302 Flask inlay 250 ml € 61,00
H 135.31 Flask carrier 500 ml with handle Ika H 135.31 Flask carrier 500 ml with handle Synthesis blocks H 135.31 Flask carrier 500 ml with handle € 249,00
H 135.40 Flask carrier 1000 ml without handle Ika H 135.40 Flask carrier 1000 ml without handle Synthesis blocks H 135.40 Flask carrier 1000 ml without handle € 189,00
H 135.401 Flask inlay 500 ml Ika H 135.401 Flask inlay 500 ml Synthesis blocks H 135.401 Flask inlay 500 ml € 109,00
H 135.41 Flask carrier 1000 ml with handle Ika H 135.41 Flask carrier 1000 ml with handle Synthesis blocks H 135.41 Flask carrier 1000 ml with handle € 289,00
H 135.50 Flask carrier 2000 ml without handle Ika H 135.50 Flask carrier 2000 ml without handle Synthesis blocks H 135.50 Flask carrier 2000 ml without handle € 259,00
H 135.501 Flask inlay 1000 ml Ika H 135.501 Flask inlay 1000 ml Synthesis blocks H 135.501 Flask inlay 1000 ml € 159,00
H 135.51 Flask carrier 2000 ml with handle Ika H 135.51 Flask carrier 2000 ml with handle Synthesis blocks H 135.51 Flask carrier 2000 ml with handle € 359,00
H 1500 Ika H 1500 Synthesis blocks H 1500 € 345,00
H 16 V Tige de statif Ika H 16 V Support rod ACC H 16 V Support rod € 60,00
H 16.3 Console Ika H 16.3 Extension ACC H 16.3 Extension € 16,00
H 29 Cuve à huile Ika H 29 Oil bath attachment Synthesis blocks H 29 Oil bath attachment € 198,00
H 30 Cuve à huile Ika H 30 Oil bath attachment Synthesis blocks H 30 Oil bath attachment € 219,00
H 3000 Ika H 3000 Synthesis blocks H 3000 € 355,00
H 38 Bras de fixation Ika H 38 Holding rod ACC H 38 Holding rod € 26,00
H 44 Noix de serrage Ika H 44 Boss head clamp ACC H 44 Boss head clamp € 26,00
H 5000 Ika H 5000 Synthesis blocks H 5000 € 418,00
HG 1000 Enveloppe chauffante Ika HG 1000 Heating jacket Synthesis blocks HG 1000 Heating jacket € 157,00
HG 600 Enveloppe chauffante Ika HG 600 Heating jacket Synthesis blocks HG 600 Heating jacket € 120,00
IKAFLON® 10 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Ika IKAFLON® 10 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 10 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars € 13,00
IKAFLON® 10 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 10 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 10 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 7,00
IKAFLON® 15 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 15 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 15 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 8,00
Barreaux aimantés IKAFLON® 155 Ika IKAFLON® 155 Magnetic stirring bar Magnetic stirring bar IKAFLON® 155 Magnetic stirring bar € 398,00
IKAFLON® 20 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Ika IKAFLON® 20 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 20 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars € 17,00
IKAFLON® 20 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 20 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 20 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 16,00
IKAFLON® 20 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Ika IKAFLON® 20 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 20 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars € 23,00
IKAFLON® 20 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 20 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 20 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 10,00
IKAFLON® 25 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Ika IKAFLON® 25 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 25 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars € 20,00
IKAFLON® 25 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 25 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 25 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 17,00
IKAFLON® 25 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 25 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 25 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 12,00
IKAFLON® 25 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Ika IKAFLON® 25 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 25 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars € 10,00
IKAFLON® 30 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Ika IKAFLON® 30 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 30 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars € 26,00
IKAFLON® 30 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 30 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 30 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 23,00
IKAFLON® 30 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Ika IKAFLON® 30 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 30 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars € 35,00
IKAFLON® 30 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 30 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 30 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 12,00
IKAFLON® 30 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Ika IKAFLON® 30 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 30 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars € 10,00
IKAFLON® 35 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 35 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 35 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 29,00
IKAFLON® 37 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars Ika IKAFLON® 37 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 37 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars € 47,00
IKAFLON® 38 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Ika IKAFLON® 38 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 38 Set (5 Pcs) cross PTFE-coated Magnetic stirring bars € 32,00
IKAFLON® 40 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 40 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 40 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 37,00
IKAFLON® 40 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 40 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 40 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 13,00
IKAFLON® 40 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Ika IKAFLON® 40 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 40 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars € 18,00
IKAFLON® 50 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 50 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 50 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 53,00
IKAFLON® 50 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Ika IKAFLON® 50 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 50 Set (5 Pcs) power SmSo PTFE-coated Magnetic stirring bars € 43,00
IKAFLON® 50 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 50 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 50 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 14,00
IKAFLON® 50 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Ika IKAFLON® 50 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 50 Set (5 Pcs) slide round PTFE-coated Magnetic stirring bars € 21,00
IKAFLON® 54 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars Ika IKAFLON® 54 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 54 Set (5 Pcs) bone PTFE-coated Magnetic stirring bars € 57,00
IKAFLON® 70 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Ika IKAFLON® 70 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 70 Set (5 Pcs) ellipse PTFE-coated Magnetic stirring bars € 93,00
IKAFLON® 74 (1 Pc) beaker PTFE-coated Magnetic stirring bars Ika IKAFLON® 74 (1 Pc) beaker PTFE-coated Magnetic stirring bars ACC IKAFLON® 74 (1 Pc) beaker PTFE-coated Magnetic stirring bars € 275,00
IKAFLON® 80 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Ika IKAFLON® 80 Set (5 Pcs) round PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 80 Set (5 Pcs) round PTFE-coated Magnetic stirring bars € 35,00
IKAFLON® 9 Set (5 Pcs) crown PTFE-coated Magnetic stirring bars Ika IKAFLON® 9 Set (5 Pcs) crown PTFE-coated Magnetic stirring bars Magnetic stirring bar IKAFLON® 9 Set (5 Pcs) crown PTFE-coated Magnetic stirring bars € 11,00
IKAFLON® glass 25 Set (5 Pcs) round Magnetic stirring bars Ika IKAFLON® glass 25 Set (5 Pcs) round Magnetic stirring bars Magnetic stirring bar IKAFLON® glass 25 Set (5 Pcs) round Magnetic stirring bars € 19,00
IKAFLON® glass 40 Set (5 Pcs) round Magnetic stirring bars Ika IKAFLON® glass 40 Set (5 Pcs) round Magnetic stirring bars Magnetic stirring bar IKAFLON® glass 40 Set (5 Pcs) round Magnetic stirring bars € 23,00
IKAFLON® glass 50 Set (5 Pcs) round Magnetic stirring bars Ika IKAFLON® glass 50 Set (5 Pcs) round Magnetic stirring bars Magnetic stirring bar IKAFLON® glass 50 Set (5 Pcs) round Magnetic stirring bars € 25,00
LABLIFT m Ika LABLIFT m Lift LABLIFT m € 253,00
labworldsoft® 6 Pro Ika labworldsoft® 6 Pro Laboratory Software labworldsoft® 6 Pro € 8.900,00
labworldsoft® 6 Starter Ika labworldsoft® 6 Starter Laboratory Software labworldsoft® 6 Starter € 3.900,00
PC 1.1 Câble Ika PC 1.1 Cable ACC PC 1.1 Cable € 33,00
PT 1000.70 Sonde de température, avec gaine de verre Ika PT 1000.70 Temperature sensor, glass coated Temperature sensor PT 1000.70 Temperature sensor, glass coated € 129,00
PT 1000.80 Sonde de température Ika PT 1000.80 Temperature sensor, stainless steel Temperature sensor PT 1000.80 Temperature sensor, stainless steel € 124,00
PT 1000.90 Sonde de température, recouverte Ika PT 1000.90 Temperature sensor, coated Temperature sensor PT 1000.90 Temperature sensor, coated € 165,00
RS 1 Jeu de barreaux aimantés Ika RS 1 Set of magnetic stirring bars ACC RS 1 Set of magnetic stirring bars € 104,00
RS 2 Set of magnetic stirring bars Ika RS 2 Set of magnetic stirring bars ACC RS 2 Set of magnetic stirring bars € 119,00
RSE Extracteur de barreaux Ika RSE Stirring bar remover ACC RSE Stirring bar remover € 66,00
TRIKA® 25 Set (5 Pcs) PTFE-coated Magnetic stirring bars Ika TRIKA® 25 Set (5 Pcs) PTFE-coated Magnetic stirring bars Magnetic stirring bar TRIKA® 25 Set (5 Pcs) PTFE-coated Magnetic stirring bars € 11,00
TRIKA® 35 Set (5 Pcs) PTFE-coated Magnetic stirring bars Ika TRIKA® 35 Set (5 Pcs) PTFE-coated Magnetic stirring bars Magnetic stirring bar TRIKA® 35 Set (5 Pcs) PTFE-coated Magnetic stirring bars € 17,00
TRIKA® 55 Set (5 Pcs) PTFE-coated Magnetic stirring bars Ika TRIKA® 55 Set (5 Pcs) PTFE-coated Magnetic stirring bars Magnetic stirring bar TRIKA® 55 Set (5 Pcs) PTFE-coated Magnetic stirring bars € 27,00
TRIKA® 80 Set (5 Pcs) PTFE-coated Magnetic stirring bars Ika TRIKA® 80 Set (5 Pcs) PTFE-coated Magnetic stirring bars Magnetic stirring bar TRIKA® 80 Set (5 Pcs) PTFE-coated Magnetic stirring bars € 38,00

Plate (RCT digital)

The IKA Plate (RCT digital) has a round top made of aluminum alloy. It stirs volumes of up to 20l (H2o) and runs at speeds ranging from 50-1500rpm.

 

Strongly standing by its product and technology, IKA is offering a lifetime warranty on the magnetic stirrer – unparalleled in the industry; scientists can focus on their experiments with a reliable stir plate.

 

Some of the features are: IKA emphasizes ease-of-use by design simplicity: reduced forms and operating elements meet the modernity of smartphones: IKA not only focuses on hardened glass because of visibility, chemical resistance and safety, it also optically changes the game of a magnetic stirrer with a glass surface. The IKA Plate (RCT digital) improves over time with regular firmware updates. Using Alnico magnetic technology, the IKA Plate (RCT digital) achieves excellent temperature stability and high residual induction. It also provides for maximum vortex.  The integrated timer and counter function supports the control of kinetics and sensitive reactions; the IKA SmartTemp® function protects users intelligently and predictably.

 

Stel ons uw vragen over dit product

Aarzel niet om ons op te bellen op +32 (0)16 73 55 72 of vul het contactformulier hieronder in en wij contacteren u zo snel mogelijk