EN

MEASURING VISCOSITY | IKA ROTAVISC

2 | ROTAVISC

Stepless measurement of viscosities/// The IKA workflow - now including viscosity measurement
You have been manufacturing, stirring and shaking with IKA laboratory devices for a long time.
Thanks to the ROTAVISC series, you can now process your samples with the proven IKA laboratorydevice structure right up to the viscosity measurement stage. And we're taking a significant step
forward here: With the four ROTAVISC models, you measure steplessly from 0,01 to 200 rotations
per minute. There's no need to get used to something new. We'll install your new viscometer
exactly where you want it. In addition, the measuring process is intuitive, standardized andcomplies with the familiar IKA menu structure for laboratory devices.
Simply switch it on and start measuring!

Innovative Viscometer Portfolio
10 YEARSWARRANTY*

Four devices for four viscosity ranges - but a single, hugefunctional scope for all: IKA ROTAVISC lo-vi, me-vi, hi-vi I, andhi-vi II precisely and reliably determine the flow curves of yourfluids.

Personalized Application Advice
You can test all of the viscometers yourself at the IKA Application
Center. Our experts will analyze your measuring processes andwork with you to find out how best to determine the viscosity ofyour samples.

Worldwide Service
To opt for an IKA viscometer is also to opt for the excellent IKA
technical service in your region. Our team is available worldwide
for your service and application needs. Spare parts for yourviscometer are guaranteed for 10 years.

10 years
warranty**2+8 years after registering at
www.ika.com/register,
wearing parts excluded

ROTAVISC | 3

IKA ROTAVISC/// with the largest range of functions in its class
The ROTAVISC series determines the liquid viscosity in all areas ofapplication ranging from the laboratory to quality control. The four devices
measure in different viscosity ranges. Regardless of a simple or demanding
viscosity measurement – the ROTAVISC delivers rapid and accurate results.
The scope of delivery includes an ISO standard spindle set, a protective
bracket, temperature sensor and stand system.
The ROTAVISC HELI devices include both a viscometer and the motorized
stand IKA HELISTAND.
The new ROTAVISC SBS devices are equipped with a steel ball bearing
technology instead of the classic jewel bearing. This makes them very
robust.

4

11/// FEATURES/// PERIPHERALS

6

14/// VISCOSITY MEASUREMENTAS USUAL. BUT BETTER.

/// ACCESSORIES

920/// GOOD TO KNOW/// PACKAGES

1022/// INDUSTRIES/// TECHNICAL DATA

23/// FAQ

mPas

M%

rpm

PR

Pa

1/s

°C / °F

g/cm³

4 | Features

1

2

3

4

5

6

7

8
4

5

6

7

FeaturesParameters / Display
The display shows the following parameters:

82viscosity 2 torque 3 rotational speed
program status 5 shear stress 6 shear rate 7 temperature
8 density
1

1

4
3

Temperature sensor
The temperature sensor is always included in the scope ofdelivery, because it is recommended to measure the viscosity inrelation to a temperature value.

Temperature control
1

By using suitable accessories it is possible to measure samples
from -100 °C to 300 °C.

Stepless positioning
The ROTASTAND ensures perpendicular stability. The height ofthe viscometer can be adjusted steplessly.
The motorized HELISTAND allows you to measure the viscosity ofhighly viscous samples with a high level of reliability. It moves themounted viscometer and its rotating body slowly and uniformly
up and down in the sample.

Multiple mountings
Thread adaption, quick connector or hook connector: You
attach the spindle to the device in the way that you find mostconvenient.

Features | 5

3 measuring modes
Three measuring modes are available for different applications:accurate, balance and fast. Ten different programs and ramps canbe stored.

Functions
The starting and stopping of a measurement can be
defined individually: With a timer, once a certain torque has
been achieved, or once the viscosity has been measured.
Labworldsoft® enables any number of program and data
recordings.

Interfaces
There are connection possibilities available for USB and RS 232.
This means that control via a PC and data capture are possible.

Printing
Via the RS 232 port printing of results is possible with serialinterface printers. You can print either single reports orcontinuously.

SpindlesFour spindles are included in the delivery of ROTAVISC lo-vi;
six spindles are included in the me-vi and hi-vi packages.
The HELISTAND packages additionally include a set of six
T-spindles for non-flowing samples.

6 | Viscosity measurement

Viscosity measurement as usual. But better.

OPERATE THE DEVICE INTUITIVELY ON
THE 4,3" TFT DISPLAY.
The large color display offers multilingual
menu guidance that is as intuitive as for allother IKA devices.
YOUR ADVANTAGE: The tried-and-tested IKA
laboratory device structure is now available
for your viscometer too.

PRECISE RESULTS FROM 0,01 – 200 RPM
The accuracy lies at +/- 1% of the maximum
value of the measurement range. The
reproducibility is +/- 0,2%.

YOUR ADVANTAGE: You get
results of highest accuracy.

TAKE STEPLESS MEASUREMENTS
The rotation rate can be set steplessly
over the entire measurement range.
This allows the stepless programmingof a flow curve.
YOUR ADVANTAGE: The only seamlessviscosity measurement offered byentry-level viscometers.

EASY SET UP
Delivered in a practical transport
case: The viscometer is secured to
the ROTASTAND or HELISTAND in no time at all.
YOUR ADVANTAGE: Immediately ready to use- even in different locations.

Viscosity measurement | 7

ALIGN THE DEVICE WITH THE DIGITAL LEVEL
After switching on the device, you areprompted to align it using the digital level.
YOUR ADVANTAGE: Process safety - you cannot
forget to adjust the level.
FOUR DEVICES. FOUR
MEASURING RANGES.
lo-vi viscosity measuring range:
1 – 6 000 000 mPas
me-vi viscosity measuring range:
100 – 40 000 000 mPas
hi-vi I viscosity measuring range:
200 – 80 000 000 mPas
INSERT THE SPINDLE
Insert the ISO spindle in the way that's
most convenient to you: With thread
adaption, quick connector or hookconnector (available as accessories).
YOUR ADVANTAGE: The device adapts
itself to suit your working habits.

CHOOSE ONE OF FOUR OUTPUT FORMATS
From a simple scale to a complex depiction of the viscosity profile
over the entire stepless rotation range: All ROTAVISC models
combine different output formats.
YOUR ADVANTAGE: Only a single device per viscosity range thatcan deliver all output formats.

hi-vi II viscosity measuring range:
800 – 320 000 000 mPas

8 | Viscosity measurement

ROTAVISC SBS. The viscometer with ball bearing.

AVAILABLE AS COMPLETE
AND HELI PACKAGESMEASURING RANGESSBS me-vi viscosity measuring range:
100 – 40 000 000 mPas
NEW BALL-BEARING TECHNOLOGYThe ROTAVISC SBS viscometer complements
our ROTAVISC series: In these instruments,a robust ball bearing (Steel Ball Bearing
Suspending) replaces the classic jewel
bearing. The operation corresponds to thewell-known user-friendly principle of theentire ROTAVISC series.

SBS hi-vi I viscosity measuring range:
200 – 80 000 000 mPas
SBS hi-vi II viscosity measuring range:
800 – 320 000 000 mPas

COMBINE AND UPGRADE
In the SBS variant, the ROTAVISC me-vi,
hi-vi I and hi-vi II viscometer models are
now available as Complete and HELI
Packages. Do you have a viscometerwith jewel bearings? Then we canupgrade it to a ball bearing model if
requested. Only ROTAVISC lo-vi for the
low viscosity range will continue to be
manufactured only with jewel bearings.
FOR HEAVY USEThis ball bearing cannot be overused at all. When changing
the spindle, you also no longer have to lift the coupling shaft.
WE RECOMMEND A VISCOMETER IN THE SBS VARIANTESPECIALLY FOR:> very high sample throughput> rather rough environment / handling> frequent spindle change> frequent change of location of the device

Packages | 9Your laboratory, our package
What kind of laboratory do you have? With us, you are sure tofind the right package for viscosity measurement.
What do you need? Come and talk to us!

1

ROTAVISC Complete
The scope of delivery includes:
1 ROTASTAND stand 2 standard spindle set
3 temperature sensor 4 guard rail
ROTAVISC lo-vi Complete | Ident No.: 0025000310

2

ROTAVISC me-vi Complete | Ident No.: 0025000311

3
4

ROTAVISC hi-vi I Complete | Ident No.: 0025000312
ROTAVISC hi-vi II Complete | Ident No.: 0025000313

ROTAVISC HELI Complete
The scope of delivery includes:
5 HELISTAND stand 2 standard spindle set
3 temperature sensor 4 guard rail
6 T-spindle set
ROTAVISC lo-vi HELI Complete | Ident No.: 0025008225
ROTAVISC me-vi HELI Complete | Ident No.: 0025008226
ROTAVISC hi-vi I HELI Complete | Ident No.: 0025008227
ROTAVISC hi-vi II HELI Complete | Ident No.: 0025008228

5

6

ROTAVISC SBS Complete
The scope of delivery includes:
1 ROTASTAND stand 2 standard spindle set
3 temperature sensor 4 guard rail
ROTAVISC SBS me-vi Complete | Ident No.: 0010007714
ROTAVISC SBS hi-vi I Complete | Ident No.: 0010007686
ROTAVISC SBS hi-vi II Complete | Ident No.: 0010007701
ROTAVISC SBS me-vi HELI Complete | Ident No.: 0010007716
ROTAVISC SBS hi-vi I HELI Complete | Ident No.: 0010007688
ROTAVISC SBS hi-vi II HELI Complete | Ident No.: 0010007703

10 | Technical data

Technical data
FOUR DEVICES. FOUR MEASURING RANGES.

TECHNICAL DATA
Viscosity accuracy

1%

Viscosity repeatibility

0,2 %Display

TFT

Motor rating output

4,8 W

ROTAVISC me-vi

Working temperaturemin.: -100 °C
max.: +300 °C

Viscosity measuring range

Speed

0,01 – 200 rpm

ROTAVISC hi-vi I

Setting accuracy speed

0,01 rpm

Viscosity measuring range

Temperature measurement resolution

0,1 K

Connection for ext. temperature sensor

PT 100Graph function
Calibration option (temperature)
Overload protection

Yes
Yes
Yes

Operating mode

Timer and continuous
operation

Attachment on stand

Extension arm

Interfaces

USB, RS 232,
Analog output

GENERAL DATA
Weight7,1 kgDimensions (W × H × D)

351 x 629 x 372 mm

Permissible ambient temperature5 – 40 °C

Permissible relative humidity

50 %Voltage

100 – 240 V

Frequency

50 / 60 Hz

Power input

24 W,Standby: 0,06 W

Protection class according to
DIN EN 60529

IP 40

ROTAVISC lo-vi
Viscosity measuring range

1 – 6 000 000 mPas

100 – 40 000 000 mPas

200 – 80 000 000 mPas

ROTAVISC hi-vi II
Viscosity measuring range

800 – 320 000 000 mPas

STAND FOR ROTAVISCROTASTAND
Stroke max.

200 mmDiameter

16 mm

Dynamic load

5 kg

Dimensions (W x H x D)

351 x 318 x 246 mm

Weight4,8 kgHELISTAND
Stroke max.

142 mmDiameter

16 mm

Dynamic load

3,2 kgOverload protection

yes

Height adjustable safety switch

yes

Dimensions (W x H x D)

351 x 343 x 252 mm

Weight5,5 kgPermissible ambient temperature

0 - 40 °C

Permissible relative humidity

80 %Protection class according to
DIN EN 60529

IP 40

Voltage

220 - 230 / 100 - 115 V

Frequency

50/60 HzPower input max.

7W

Peripherals | 11

HRC 2 refrigerated and heating circulator
Precise tempering to prepare your samples: The compact refrigerated and heating
circulator HRC 2 control is renowned for its high energy efficiency, a working
temperature range from -30 °C to 100 °C and a powerful and infinitely variable
pressure and suction pump. The on-demand and speed-controlled compressor
reduces noise and operating costs.
The HRC 2 control in combination with an external temperature sensor is perfectly
suitable to precisely temper external closed or open applications.
The high-quality isolation of the 4 l bath allows fast heating and reduces heat
input when cooling.

HRC 2 basic
Ident No.: 0025003742
HRC 2 control
Ident No.: 0025004524
H.SI.8 Tube
Ident No.: 004569000

Using the external temperature control circuit is possible for up to 2,5 l
thermofluid without a refill. The integrated hopper and drain valve ensure a safe
and clean handling of the thermofluid. The easy-to-open front flap allows an easycleaning of the cooling unit’s air filter. There is a drain valve on the front side of
the bath. A hose can be connected to empty the bath, so the user does not get indirect contact with the thermofluid.

STARVISC 200-2.5 control measuring stirrer

TORQUESENSOR

STARVISC 200-2.5 control
Ident No.: 0025003604

The only device that can do everything at the same time. During the mixing
process a highly sensitive torque measuring sensor allows further conclusions
on viscosity changes, directly in the product. This eliminates the regularsampling, rather time consuming offline measurement process. The viscosity
can be correlated from the torque readings based on a well defined set-up
under reproducible conditions. The modern TFT display is removable. Thismeans that STARVISC can also be controlled from a safe distance. Even highly
viscous substances can be intensively stirred using the powerful STARVISC stirrer.
Quantities of up to 100 liters can be processed.

12 | Peripherals

Laboratory Reactors
IKA lab reactors are the most unique systems when it comes to optimizing andreproducing chemical reaction, mixing, dispersing, and homogenization processes
on a lab scale. The lab reactors can be individually customized
to perform numerous tasks, including: production of creams and lotions,the grinding and disintegrating of solids and fibers in liquids or polymers, etc.

IKA Overhead Stirrers
Stirrers with perfect basic functions; compact and easy to use: The space-saving
high performers of the IKA MICROSTAR and IKA MINISTAR series.
More robust variants can be found in the EUROSTAR series. For example, the new
EUROSTAR 100 control P4 offers particularly strong and flexible stirring thanks to its
reduction gear. Additionally, it is a great choice for use in laboratory reactors.

labworldsoft® 6 / labworldsoft® 6 Visc | 13

labworldsoft® 6

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The universal laboratory software labworldsoft® 6 controls your lab devices, automates processes and documents measurements and results. labworldsoft® 6 cansimultaneously network any number of laboratory devices using a PC. This makes
the automation of your laboratory experiments and procedures easier and more
efficient. Communication between the PC and the laboratory equipment is possible
via various interfaces, such as RS 232, USB, Bluetooth or via network interfaces.
labworldsoft® 6 allows rapid recording of numerous physical parameters, such as
torque, temperature, speed and pH-value. This can be displayed in various ways forease of analysis and documenting e.g. on a y/t-diagram.

y

nolog

Tech

labworldsoft® 6 Visc
The downsized version labworldsoft 6 Visc software enables the automation oflaboratory processes by connecting the ROTAVISC viscometers and STARVISC 2002.5 control measuring stirrer to other devices, such as a thermostats, through a PC.
The software is available as accessory and is compliant with FDA 21 CFR Part 11.
Ident No.: 0020101872

14 | Accessories

Accessories

SP RACK spindle rack
The stainless steel rack (AISI 304 / 1.4301) for
ROTAVISC spindles offers sufficient space for avariety of different spindles for hanging storage
close to the device or for drying.
Ident No.: 0020104809

VOL-C-RTD-2.1 chamber
The optional chamber VOL-C-RTD-2.1 for
VOLS-1 is especially suitable for expensive
and valuable samples. A temperature sensor
is already integrated in the chamber and thus
allows for temperature measurement duringviscosity determination.
Ident No.: 0025007064

DWB 600 double-walled beaker
The double-walled beaker DWB 600 has a fillingvolume of 600 ml. It can be connected to an
external cooling or heating source and is therefore suitable for tempering the sample inside thebeaker.
Ident No.: 0020024575

BH 600 clamp
The BH 600 clamp is suitable for 600 ml beakers. It fixes them, for example, to an IB R 9 or IB
R 20 plastic bath.
Ident No.: 0025000400

Hook Connector for spindles
The Hook Connector enables the spindles tobe easily hooked to the ROTAVISC measuringsystem.
Ident No.: 0025000338

Quick Connector for spindles
The Quick Connector enables the spindles to beconnected directly to the ROTAVISC measuring
System.
Ident No.: 0025000339

PT 100.8 temperature sensor
Temp. sensor, stn. steel, Ø3 mm, 75 mm for
ROTAVISC viscometers
Ident No.: 0025000413

Accessories | 15

Accessories
3

DINS-1 DIN adapter
Adapter to measure the viscosity according to
DIN 53019. The set includes a double jacket toquickly heat up or cool down the sample as well
as a coaxial cylinder system for the analysis of
the sample at a specific shear rate.
Ident No.: 0025000387

O DIN S-1 open DIN spindle set
The set includes a single-wall-open-jacket toquickly dive into the sample liquid as well as a
coaxial cylinder system for the analysis of thesample at a specific shear rate and shear stress is
included. The maximum measurable viscosity is
50 000 mPas.
Ident No.: 0025000326

VOLS-1 adapter
Adapter to measure the viscosity of especiallyvaluable and expensive samples. A double
jacket with temperature sensor to quickly
heat up or cool down the sample as well asa coaxial cylinder system for the analysis of
the sample at a specific shear rate is included.
Further spindles and chambers for different
volumes can be purchased separately.
Ident No.: 0025000352

ELVAS-1 adapter
Adapter to measure very low viscosities, which
are not measured by the standard spindle. A
double jacket to quickly heat up or cool down
the sample as well as a coaxial cylinder system
for the analysis of the sample at a specific shear
rate is included.
Ident No.: 0025000390

VAN-1 vane spindle set
The vane spindle set allows the viscosity measurement of suspensions. Four vane spindles areincluded in the delivery.
Ident No.: 0025000407

SAS-1 spiral adapter
Spiral adapter to measure the viscosity of very
sticky and other viscous samples. Additionally,
it is possible to analyse the fluid behavior ofdifferent shear rates.
Ident No.: 0025000377

ELVAS-C-C stainless steel chamber
Closed stainless steel chamber for the adapter
spindle set ELVAS-1.
Ident No.: 0025008373

16 | Accessories

Accessories
SPINDLES SINGLE

SP-5

SP-6

T-SP-6 – T-SP-1

Product

Description

Ident. No.

SP-1

Standard spindle

0025006828

SP-2

Standard spindle

0025006829

SP-3

Standard spindle

0025006830

SP-4

Standard spindle

0025006831

SP-5

Standard spindle

0025006832

SP-6

Standard spindle

0025006833

SP-7

Standard spindle

0025006834

SP-8

Standard spindle

0025006835

SP-9

Standard spindle

0025006836

SP-10

Standard spindle

0025006837

SP-11

Standard spindle

0025006838

SP-12

Standard spindle

0025006839

T-SP-1

T-spindle

0025008238

T-SP-2

T-spindle

0025008239

T-SP-3T-spindle

0025008240

T-SP-4T-spindle

0025008241

T-SP-5T-spindle

0025008242

T-SP-6

T-spindle

0025008243

T-SP-nut

T-spindle nut

0020108874

T-SP-couplingT-spindle coupling

0020108842

VAN-SP-1

Vane spindle

0025006853

VAN-SP-2

Vane spindle

0025006854

VAN-SP-3

Vane spindle

0025006855

VAN-SP-4

Vane spindle

0025006856

VAN-SP-5

Vane spindle

0025008376

S-SP

Spiral spindle

0025006843

S-C-1

Chamber for S-SP spiral spindle

0020108896

SCB

Spindle brush for S-SP

0020108882

Accessories | 17

Accessories

VOL-SP-7.1

VOL-SP-9

VOL-C-RTD-3.8

VOL-SP-2.1

VOL-SP-11

VOL-C-RTD-4.2

Product

Description

Ident. No.

VOL-SP-6.7

Spindle for VOLS-1, 6,7 ml

0025006845

VOL-SP-7.1

Spindle for VOLS-1, 7,1 ml

0025006849

VOL-SP-16.1

Spindle for VOLS-1, 16,1 ml

0025006848

VOL-SP-10.4

Spindle for VOLS-1, 10,4 ml

0025006850

VOL-SP-11

Spindle for VOLS-1, 11 ml

0025006851

VOL-SP-13.5

Spindle for VOLS-1, 13,5 ml

0025006852

VOL-SP-9

Spindle for VOLS-1, 9 ml

0025006846

VOL-SP-9.4

Spindle for VOLS-1, 9,4 ml

0025006847

VOL-SP-2.1

Spindle for 2,1 ml chamber

0025007061

VOL-C-RTD-1

VOL-C-RTD-1 chamber

0025007603

VOL-C-RTD-2.1

2,1 ml chamber for VOLS-1

0025007064

VOL-SP-3.8

Spindle for 3,8 ml chamber

0025007062

VOL-C-RTD-3.8

3,8 ml chamber for VOLS-1

0025007065

VOL-SP-4.2

Spindle for 4,2 ml chamber

0025007063

VOL-C-RTD-4.2

4,2 ml chamber for VOLS-1

0025007066

VOLS 1.11

Extension connector

0020107301

VOLS 1.21

Cover for VOLS chamber

0020108881

ELVAS-SP

ELVAS Spindle

0025006844

ELVAS-C

ELVAS sample chamber (open)

0020107138

ELVAS-C-C

Closed chamber for ELVAS-1

0025008373

DIN-SP-5

DIN spindle 50025006840

DIN-SP-6

DIN spindle 60025006841

DIN-SP-7

DIN spindle 70025006842

DIN-C-1

Chamber for DIN-SP-50020108883

DIN-C-2

Chamber for DIN-SP-6, DIN-SP-70020108885

O-DIN-C-1

Open chamber for DIN-SP-50020108887

O-DIN-C-2

Open chamber for DIN-SP-60020108888

O-DIN-C-3

Open chamber for DIN-SP-70020108889

CC-1

Chamber cap (6 pcs.) for ELVAS / DINS

0020107043

18 | Accessories

Accessories

Standard silicone oilWith the certified standard silicone oil you are able to check the measurement accuracy of your ROTAVISC. The certificate is part of the delivery. Standard silicone oil withdifferent viscosities or temperature conditions can be ordered customer-specifially.

CAL-O-5 standard silicone oil
5 mPasIdent No.: 0025000397

CAL-O-10 standard silicone oil
10 mPasIdent No.: 0025000398

CAL-O-50 standard silicone oil
50 mPasIdent No.: 0025000399

CAL-O-100 standard silicone oil
100 mPas
Ident No.: 0025000434

CAL-O-500 standard silicone oil
500 mPas
Ident No.: 0025000435

CAL-O-1000 standard silicone oil1000 mPas
Ident No.: 0025000436

CAL-O-5000 standard silicone oil
5000 mPas
Ident No.: 0025000437

CAL-O-12500 standard silicone oil
12 500 mPas
Ident No.: 0025000466

CAL-O-30000 standard silicone oil
30 000 mPas
Ident No.: 0025000467

CAL-O-60000 standard silicone oil
60 000 mPas
Ident No.: 0025000468

CAL-O-100000 standard silicone oil
100 000 mPas
Ident No.: 0025000469

Accessories | 19

Accessories

T-SP-Set T-spindle set
The T-spindle set is particularly suitable for themeasurement of non-flowing samples, such as
creams, pastes or gelatin.
Ident No.: 0025007765

SP set-1 standard spindle set
The standard spindle set SP set-1 includes four
spindles (SP1, SP2, SP3, SP4). It is particularly
suitable for viscosity determination in combination with the rotary viscometers ROTAVISC
lo-vi Complete.
Ident No.: 0025000319

ROTASTAND stand for ROTAVISC
Ident No.: 0020006787

HELISTAND electrical stand for ROTAVISC
Ident No.: 0025007567

SP set-2 standard spindle set
The standard spindle set SP set-2 includes six
spindles (SP7, SP8, SP9, SP10, SP 11, SP12). It isparticularly suitable for viscosity determinationin combination with the rotary viscometers
ROTAVISC me-vi, hi-vi I or hi-vi II Complete.
Ident No.: 0025000329

YOU ARE ALREADY WORKING WITH ROTAVISC?
Extend its application range with the HELISTAND
Set including an electric stand and six T-spindles.
HELISTAND SET
Ident. No. 0025008224

Further accessories can be found on
www.ika.com

20 | Good to know

Good to know
motor
coupling

impulse discspiral spring

bearing bushbearingcore spindle

measuring
spindle adapter

Infinitely variable measurement according
to the SEARLE principle
The ROTAVISC measurement of viscosity is based on the SEARLE principle.
A measuring spindle rotates in the substance being examined. The viscosity of thesample is determined from the torque required to achieve a given speed, taking
into account the spindle used. All this happens automatically without users having
to make manual adjustments to the settings.
The viscosity of a substance is often not a constant factor; it depends on thetemperature, pressure and other influences. Therefore, different viscosity values
will be recorded for the same substance at different shear rates and temperatures,for instance.

Usability
Using the appropriate accessories, any fluid sample, even down to the low-viscosity range, can be measured properly and reproducibly. This also applies tomaking relative comparisons. It is also possible to adapt the device to user-specificmeasuring containers, so that decanting the sample - and thus possibly changing
the sample structure - is not required.
Due to the extensive range of measuring geometries, ROTAVISC is suitable forall common measuring requirements and all conceivable free-flowing media.
Measurement results can be provided in both relative and absolute terms. The extensive range of accessories and an intuitive user interface ensure that ROTAVISC
is fully usable. The necessary parameters can be set in no time, meaning that thestaff responsible for the rheological measurements hardly require any training.

Good to know | 21

Good to know
Technical features
Measurements according to DIN 53019, ISO 2555 and relative measurements are
possible with the ROTAVISC and the corresponding measuring spindles. ROTAVISC
detects the sample temperature, which is important for the viscosity measurement, from a PT 100 sensor that can be immersed in the substance. You can store
measurement methods and automate processes without even connecting to acomputer. This makes it possible to define both step and ramp programs, which
can then be standardized over and over again. The results displayed on the device
as a graph.

Temperature control
The viscosity of a sample is always dependent on its temperature. Therefore, thesample should always be measured isothermally. The IKA tempering equipment
meets this requirement by using immersion circulators as well as cryostats for temperatures ranging from -30 °C to 250 °C.
This widens ROTAVISC's field of application, since the IKA laboratory software (seeabove) for controlling the thermostats can be used to specify rheological temperature ramps and record the change in viscosity.

Verification / Calibration
The ISO 17025 standard requires that measuring instruments be verified.
ROTAVISC offers users the option of carrying out this verification themselves.
Thanks to the extensive range of appropriate standard fluids, users are fullyautonomous, i.e. able to check their device without external maintenance costs.
This allows them to check whether all specified readings are within the specified
measurement accuracy range.

Viscometer standards
ROTAVISC measures according to international standards,
e.g. according to ISO 1652, ISO 2555 and GB 10247.

22 | Industries

Industries
Personal care
Environment
SewageViscosities play a role in the most diverse of industries. Our
product portfolio is ideally oriented for viscosity measurement in
the following fields of application:

Food industry
Research
Teaching
Materials sciences

Electronics industry
Beverages
Cosmetics

Nanotechnology
Commodities
TextilesPharmaceutical industry
Medicines
Biotechnology

Paper
Oil industry
Chemical industry

FAQ | 23

FAQ
1. Which IKA rotational viscometer is the most suitable for mysample?
lo-vi: for juices, solvents, edible oils, inks, liquid soap.
me-vi: for paints / varnishes, mayonnaise, dairy products,
ketchup.
hi-vi I & hi-vi II: for pastes, ointments, molasses, gels.
2. How can the accuracy of the ROTAVISC be checked?
IKA sells standard liquids with a viscosity determined at 25 °C.
The user can check the device using these fluids.
3. How is the spindle mounted on the device?
The delivery includes three different adaptations.
1. The spindle is screwed onto the device.
2. The spindle is attached to the device by means of a quickfitting adapter.
3. The spindle is attached to the device by means of a hook
adapter.
4. How long does a measurement take?
To obtain a stable viscosity value, the spindle should havecompleted 3 to 4 full revolutions in the medium. The lower the
speed, the longer a measurement takes.
5. How deep does the spindle have to be immersed into the test
medium?
Each spindle has a mark on the shaft. The spindle must be
immersed into the medium up to this point.
6. What is the smallest viscosity that can be measured using
ROTAVISC?
1 mPas with lo-vi and ELVAS-1 at 60 rpm.
7. How exactly does the IKA ROTAVISC work?
The rotational viscometer measures the torque required to turnthe spindle immersed in a medium. The spindle is driven by a
motor that uses a calibrated spring. The deflection serves as ameasurement of the torque and is shown in the display as M%.
8. How much sample volume is needed?
The standard spindles in the scope of delivery are suitable fora volume of approx. 500 ml in the 600 ml beaker (low form).
Smaller sample volumes can be measured with the absolutemeasuring systems (coaxial measuring system), such as with the
VOLS-1 adapter.

9. Why does ROTAVISC measure different viscosities for thesame sample?
Generally, viscosity is not a substance-specific constant. The
viscosity describes a substance in a well-defined state, forinstance at temperature X and speed Y. There are samples which
reduce their viscosity with increasing speed, for example ketchup(shear thinning / pseudoplastic). For other samples, the viscosity
increases with increasing speed, for example starch solutions(shear thickening / dilatant). Also there are samples that do notchange their viscosity either as the speed increases or decreases,
such as silicone oil (Newtonian fluid).
10. Which measured values does ROTAVISC output?
Temperature:°C or °F
Speed:
rpm
Measuring time: hh:mm:ss
Torque:M%
Viscosity:
mPas, cP, m²/s, cSt
Stop conditions: Time, torque, temperature, viscosity
Density:g/cm³
Shear rate:
1/s (when using a coaxial measuring system)
Shear stress:
Pa (when using a coaxial measuringsystem)11. How high should the maximum speed be?
Here it is important that the speed and the spindle are chosen sothat the laminar flow range is not deviated from. Otherwise, theviscosity values will be too high. For the geometries SP-1, SP-2,
SP-6 and ELVAS-SP, the following transition points to a turbulent
flow were determined.
1. SP-1 lo-vi,15 mPas
at 60 rpm > rpm / mPas = 4
2. SP-2 lo-vi 100 mPas at 200 rpm > rpm / mPas = 2
3. SP-6 me-vi 100 mPas at 50 rpm > rpm / mPas = 0,5
4. ELVAS-SP 0,85 mPas at 60 rpm > rpm / mPas = 70,6
If the ratio of rpm / mPas exceeds these values, turbulent
conditions can occur with the spindles listed. Artificially higher
viscosity values can occur with the geometries VAN-SP-1 to VANSP-4, due to turbulence at speeds of more than 10 rpm.

EN

GERMANY
IKA-Werke GmbH & Co. KG
Janke & Kunkel-Straße 10, 79219 Staufen
Phone: +49 7633 831-0, eMail: sales@ika.de

USA
IKA Works, Inc.
Phone: +1 910 452-7059
eMail: sales@ika.net

KOREA
IKA Korea Ltd.
Phone: +82 2 2136 6800
eMail: info@ika.kr

BRAZILIKA Brazil
Phone: +55 19 3772-9600
eMail: sales@ika.net.br

MALAYSIA
IKA Works (Asia) Sdn Bhd
Phone: +60 3 6099-5666
eMail: sales.lab@ika.my

CHINA
IKA Works Guangzhou
Phone: +86 20 8222 6771
eMail: info@ika.cn

POLANDIKA Poland Sp. z o.o.
Phone: +48 22 201 99 79
eMail: sales.poland@ika.com

JAPAN
IKA Japan K.K.
Phone: +81 6 6730 6781
eMail: info_japan@ika.ne.jp

INDIA
IKA India Private Limited
Phone: +91 80 26253 900
eMail: info@ika.in

UNITED KINGDOMIKA England LTD.
Phone: +44 1865 986 162
eMail: sales.england@ika.com

VIETNAMIKA Vietnam Company Limited
Phone: +84 28 38202142
eMail: sales.lab-vietnam@ika.com

THAILANDIKA Works (Thailand) Co. Ltd.
Phone: +662 1178150
eMail: sales.lab-thailand@ika.com

TURKEYIKA Turkey A. Ş.
Phone: +90 216 584 54 65
eMail: info@ika.com

Subject to technical changes.
Information regarding delivery is not binding.

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