Page 1
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
TEL508-946-6200
or 800-628-8139 (USA excluding MA)
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346 USA
with offices in
:
Boston • Chicago • London • Stuttgart • Guangzhou
BROOKFIELD KF30 and KF40
Falling Ball Viscometer
Operating Instructions
Manual No. M11-353-A0512
Brookeld Engineering Labs., Inc. Page 1 Manual No. M11-353-A0512
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Table of Contents
I. INTRODUCTION ..............................................................................................................3
I.1 Components .......................................................................................................................................3
I.2 Specications .....................................................................................................................................4
I.3 Details on Viscosity Measurement Range .........................................................................................5
I.4 Description of the Equipment ............................................................................................................5
I.5 Safety Symbols and Precautions .......................................................................................................8
I.6 Cleaning .............................................................................................................................................8
II. GETTING STARTED .....................................................................................................9
II.1 Choice of Balls .................................................................................................................................9
II.2 Filling the Sample Tube ...................................................................................................................9
II.3 Temperature Control of the Sample ...............................................................................................10
II.4 Measuring the Falling Time ...........................................................................................................10
III.CALCULATIONS ..........................................................................................................12
III.1 Dynamic Viscosity .......................................................................................................................... 12
III.2 Kinetmatic Viscosity ....................................................................................................................... 13
IV. DETERMINATION OF THE NON-NEWTONIAN BEHAVIOR ...........................14
IV.1 Thixotrophy/Rheopexy ...................................................................................................................14
IV.2 Structural Viscosity (Pseudoplasticity and Dilatancy) ...................................................................14
Appendix A - Maintenance .....................................................................................................15
A.1 Exchanging the Sample Tube ............................................................................................................15
A.2 Exchanging the Water Bath Jacket .....................................................................................................15
A.3 Exchanging the Ball or the Viscometer .............................................................................................15
Appendix B - Calibration of the Ball Constants ........................................................................16
Appendix C - Warranty Repair and Service ..............................................................................17
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I. INTRODUCTION
Falling Ball Viscometer, Models KF30 and KF40, comply with the German industry standard
DIN 53015. The measuring principle, according to Höppler, is to determine the falling time of
a ball in a cylindrical glass tube lled with liquid. The working angle of the falling tube in the
KF30 is xed in the DIN 53015 position of 80° relative to horizontal. The water jacket, surrounding the falling tube, when connected to a Brookeld circulating temperature bath provides
for precise temperature control of the sample.
The user calculates the dynamic viscosity of the sample by determining the falling time of the
ball between the upper and lower ring marks displayed on the falling tube. Using data on the
ball constants, the density difference between the liquid sample and the ball, and the working
angle constant, a mathematical equation is used to convert the time measurement to a viscosity
value in centipoise.
Note: The ball constants (forwards and backwards) and ball densities are listed on the test
certicate accompanying the instrument. You must provide the density value for the
liquid that you are testing.
The six (6) balls with different diameters and densities enable the KF30 to measure a wide range
of viscosities. The ability to adjust the angle of inclination of the KF40 extends the measuring
range for low viscosity liquids.
For non-Newtonian liquids, by subjecting the same sample to repetitive measurements with the
KF40 at different angles, pseudoplastic or dilatant behavior may be determined as explained in
Section 7. Time dependent behavior (thixotropy and rheopexy) may also be noted.
The ease of operation and precise temperature control, using a Brookeld circulating temperature
bath, allows for very reproducible measuring results.
I.1 Components
Component Part No. Quantity
Falling Ball Viscometer: 1
KF30 at xed DIN position of 80° KF30 -
OR KF40 variable angle with position 80°, 70°, 60° 50° KF40 -
Set of (6) balls with gauge (FB68) in a carrying case (FB22) FB21C 1
Supplied w/certicate stating diameter and mass of each ball
-Ball 1 (glass) FB1 -
-Ball 2 (glass) FB2 -
-Ball 3 (nickel and iron) FB3 -
-Ball 4 (nickel and iron) FB4 -
-Ball 5 (steel) FB5 -
-Ball 6 (steel) FB6 -
Ball Tweezers FB51 1
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Wire Cleaning Brush for Sample Tube FB53 1
Brush to clean loose debris from Falling Balls FB52 1
Leather cloth for polishing Falling Balls FB70 1
Sealant ring (perbunane) A 16x20 FB31 4
Sealant ring (silicone) 10x14x2 FB32 1
Thermometer, 0°C to +100°C* TM1 1
Operator Manual M11-353 1
Instrument Case FB200 1
Latex rubber tubing, 5/16 I.D. x 1/16 wall FB69 1
Certicate of Calibration ____ 1
*Other temperature measurement options are available. Contact your Brookeld dealer for
information.
I.2 Specifications
Viscosity Range: 0.5 - 7x104 mPa•s (cP)
Falling Time-Lower Limit: 60 s for Ball No.1
30 s for Ball Nos. 2,3,4,5 and 6
Falling Time-Upper limit: 300 s
Materials with viscosity >7x104 mPa•s require running
times of over 300 s.
Measuring Distance: 100 mm (50 mm between adjacent ring marks) in both
directions
Fall Tube Inner Diameter: 15.94mm +/- 0.01mm
Set of Balls: 6 balls
Working Angle: KF30: 80° (DIN position)
KF40: 80°, 70°, 60°, 50°
Temperature Range: -60°C - +150°C
Sample Volume: 40 mL
Dimensions: 180mm x 220mm x 330mm
Weight: 6.4 lbs, 2.9 kg
(empty glass tube and empty waterbath jacket)
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I.3 Details on Viscosity Measurement Range
Per DIN 53015, the Falling Ball method is suitable for measuring dynamic viscosities ranging
from 0.6 mPa•s to 250,000 mPa•s at temperatures from -60ºC to 150ºC. Use is made of six
balls having different diameters, each ball covering part of the range. All guideline values and
referenced parameters in the following table are per DIN 53015.
Viscosity
Ball
No.
measurement
range (guideline value)
(mPa•s)
Material
(Recommendation)
1 0.5 to 10 Borosilicate
Density
(guideline
value)
3)
(g/cm
Ball diameter
(mm)
Deviation
from
circularity
(mm)
2.4 15.81 ± .01 ± 0.0005 0.007
Calibration
constant
(guideline value)
(mPa•s•cm
glass
2 9 to 140 Borosilicate
2.4 15.6 ± 0.05 ± 0.0005 0.09
glass
3 40 to 700 Ni/iron 8.1 15.6 ± 0.05 ± 0.001 0.09
4 150 to 5,000 Ni/iron 8.1 15.2 ± 0.1 ± 0.001 0.7
5 1,500 to 50,000 Ni/iron 8.1 14.0 ± 0.5 ± 0.001 7
6 Above 7,500 Ni/iron 8.1 11.0 ± 1 ± 0.002 35
I.4 Description of the Equipment
Refer to Figures 1 and 2. Specic items identied on the Falling Ball Viscometer are identied by
parentheses ( ) in the following steps:
3
/g•s)
1. The Falling Ball Viscometer must be level. The level is adjusted using the three Leveling
Feet (4) on the base. Adjust so that the bubble level on top of the Falling Ball Viscometer
is centered within the circle. Check level periodically during use.
2. a. The working angles of the KF40 are 80°, 70°, 60° and 50° relative to horizontal. The
DIN 53015 working position of 80° is the preferred position. The different working
angles are secured by the adjustment screw (5). To select a working angle, the adjust-
ment screw (5) should be loosened by turning it counter-clockwise approximately one
rotation. After the working angle is selected, the adjustment screw should then be
tightened again.
b. The working angle of the KF30 Viscometer is xed at the DIN 53015 position of 80°
relative to horizontal.
3. The two running directions of the balls can be chosen by swiveling the viscometer, which
is kept in place by the Stop to hold the viscometer in position (22).
4. The glass tube (6) is surrounded by a waterbath jacket (9) which is xed between the upper
plate (7) and lower plate (8). The upper locking plug (16) with lid (20), the lower locking
plug (17) and accompanying seals (19), and the caps (18) are designed to perform the following functions within the sample tube:
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a. keep the liquid sample tightly sealed.
b. eliminate the formation of air bubbles.
c. avoid a build up of pressure
5. Mounted on the lower and upper plates are inlet/outlet ports (10a and 10b) for connection
to the water bath.
NOTE: Any alteration, modication or replacement of the sample tube, water jacket,
falling tube screw ttings, tension rods or balls renders the ball constants invalid
and requires the re-calibration of the viscometer. See Appendix B.
6. The thermometer screw (11) and thermometer seal (13) with inserted thermometer is screwed
into M10x1 Thermometer attachment thread (12) in the upper plate. The thermometer screw
should be tightened securely to prevent uid leakage.
7. The primary function of the ball gauge is to distinguish the two glass balls (Ball No. 1 and
Ball No. 2) from each other. Ball No. 1 will not pass through the ball gauge, whereas Ball
No. 2 will pass through. The ball gauge may also be used to help identify Ball No. 2 through
4.
Balls (set of 6)
(p/n FB1-FB6)
Case (p/n FB22)
Ball Gauge (p/n FB68)
Figure 1
NOTES:
Ball diameters, weights, densities and ball constants (forwards and backwards) are
listed in the test certicate accompanying the viscometer.
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13
11
21
18
20
16
19
23
10a
15
10b
24
8
12
9
7
2
14
6
KF40
O
O
O
70
DIN
60
50
22
5
3
1
4
23
19
21
17
18
Figure 2: Falling Ball Viscometer KF40
1. Stand - KF30 (Part No. FB203) 13. Thermometer seal , 10mm x 14mm x 2mm
KF40 (Part No. FB204) (silicone) (Part No. FB32)
2. Viscometer 14. Bearing for viscometer rotation
3. Bubble Level 15. Nuts
4. Leveling Feet (Part No. FB75) 16. Upper Locking Plug (Part No. FB64)
5. Adjustment screw for angle (KF40 Only) 17. Lower Locking Plug (Part No. FB66)
6. Glass Tube (15.94mm dia.) (Part No. FB76) 18. Cap (Part No. FB63)
7. Upper Plate 19. Viscometer seal A 16mm x 20mm (perbunane)
8. Lower Plate (Part No. FB31)
9. Waterbath Jacket (glass) (Part No. FB41) 20. Lid (for upper locking plug) (Part No. FB65)
10a. Inlet port for connection to water bath 21. Falling tube screw fitting (Part No. FB67)
10b. Outlet port for connection to water bath 22. Stop to hold viscometer in position
11. Thermometer screw (Part No. FB42) 23. Seal for falling tube (Part No. FB62)
12. M10x1 Thermometer Attachment Thread 24. Water Jacket Gasket (Part No. FB33)
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I.5 Safety Symbols and Precautions
Safety Symbols
The following explains safety symbols which may be found in this operating manual.
Refer to the manual for specic warning or caution information to avoid personal injury
or damage to the instrument.
Precautions
If this instrument is used in a manner not specied by the manufacturer, the protection
provided by the instrument may be impaired.
This instrument is not intended for use in a potentially hazardous environment.
The user should ensure that the substances placed under test do not release poisonous,
toxic or ammable gases at the temperatures to which they are subjected to during the
testing.
I.6 Cleaning
Great care should be given to cleaning of the sample tube, the locking plugs and the balls. These
components (material: glass, Ni-iron, steel, perbunane, silicone, stainless steel surfaces) must
not be damaged or subject to chemical action by the cleaning uid.
The cleaning procedure is to be carried out in the following sequence:
• The viscometer is pulled out of the bearing guide (14) in the stand by turning it 90° and
placed in a suitable collecting basin.
• Unscrew the caps and remove the locking plugs in such a way that the ball does not fall into
the collecting basin (possibly damaging the ball). The ball collector (Part No. FB23) is an
optional item that can be purchased on request.
• Clean the sample tube using a suitable cleaning agent for the material being measured with
the cleaning brush (Part No. FB53).
• There must not be any residue remaining in the sample tube or on the balls after they have
been cleaned and are dry. Wipe with a Kim wipe or cloth that will not leave bers, if neces-
sary.
• When cleaning, be careful that the cleaning agent does not come into contact with the equipment outside of the measuring tube.
II
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II. GETTING STARTED
.
II.1 Choice of Balls
The balls are chosen in such a way that the minimum falling time is not less than what is shown
in the table and the maximum falling time is not greater than 300 s. The DIN 53015 indicates
that a falling time greater than 300 s is allowed, but for practical reasons, a shorter test time
makes more sense.
Ball
No.
Diameter
[mm]
1 15.81 60 0.5 10
2 15.60 30 2.5 130
3 15.60 30 20 700
4 15.20 30 200 7800
5 14.00 30 1000 45000
6 11.00 30 5500 70000
The specications for the ball constant and the ball density are taken from the test certicate
which came with the equipment.
The exchange of balls or equipment components between different viscometers is not permitted. Otherwise, the ball constants lose their validity.
When the falling time for the ball is less than the minimum time, turbulence may occur.
II.2 Filling the Sample Tube
Minimum falling
time [s]
Lower measuring range limit
[
mPa•s]
Upper
measuring range
limit [mPa•s]
To ll the sample tube:
• The sample tube is locked on the lower plate with the lower locking plug, seal, and cap.
• The liquid is lled up to approximately 25mm beneath the top of the sample tube without
air bubbles. Use a glass lter to remove any impurities when introducing a liquid into the
tube.
• The ball is polished with the leather cloth and bers are removed with the small cleaning
brush, before being inserted into the tube with the ball tweezers. The ball must not be touched
after polishing. The ball will travel to the bottom of the tube. Possible air bubbles in the
sample, or trapped below the ball, are removed with a suitable rod, by rotating the ball.
• Insert the upper locking plug with seal into the sample tube. In so doing, the sample must
enter the inside of the upper locking plug through the opening. The upper locking plug must
not be lled more than half way with the sample in order to minimize pressure build-up due
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to the air bubbles. Due to the design of the upper locking plug, air bubbles cannot get into
the sample tube.
• The sample must be free of air bubbles between the two locking plugs. The lid of the upper locking plug is attached and the temperature control (desired test temperature) must be
achieved. After proper temperature control is achieved, the upper cap is screwed on.
Do not heat the sample with the upper lid attached as pressure may build in the tube.
NOTE: Gas bubbles can be removed by warming up the sample for a short time (approximately
20 degrees above the measuring temperature with the upper locking plug removed)
or by lightly tapping on the lid of the upper locking plug.
II.3 Temperature Control of the Sample
The following are suggested working uids for the circulating temperature bath:
Temperature
Range
-60 to +20°C Water (deionized) - glycol-mixture; mixed
in accordance with the manufacturer’s
instructions for the temperature range
+1°C to +80°C Distilled water Latex tube
+80°C to +150°C Transparent thermostatic oil Insulated Fluran tube,
Bath Working Fluids Tubing
Insulated Latex tubing,
secured with tube band clips
secured with tube band clips
The inlet and outlet ports should be oriented in the following manner. During initial ll of
water jacket, the inlet will be at the bottom of the viscometer and the outlet will be at the top.
The tubing from the circulating bath should be pushed tightly onto the viscometer tubes. By
pulling gently, check whether the tubing is rmly attached. Tubing and circulating bath are
available on request from your Brookeld dealer. If the water bath jacket has condensation on
the glass, rub with alcohol.
The sample tube is sealed with the upper cap after temperature set point has been achieved.
Allow 30 minutes for thermal equilibrium.
Falling ball viscometers provide precise temperature control for the sample. By measuring
your sample at multiple temperatures, you can determine the temperature viscosity curve.
II.4 Measuring the Falling Time
Before beginning the measurement, the upper cap is loosened (unscrewed) again to let off
possible pressure.
The time which the balls take to run between the top and bottom ring marks in the sample tube
is determined with a stop watch (resolution 0.01 s).
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It is recommended that you record the passage of the lower ball point using the ring marks as
follows. Position your eyes at the same height as the ring marks so that these appear as a line.
A dark paper, placed behind the viscometer with its edge at the same height as the ring mark,
shows the ball periphery more distinctly.
With dark liquids, you can better observe the ball in the sample tube by looking from behind
the instrument.
Possible variations in the measuring times may be due to impurities in the sample, air bubbles or
the fact that it has not been brought to the right temperature (insufcient temperature control).
Even 0.1°C change in temperature is clearly measurable. The rst forward and return passage
of the ball can be used to achieve a thorough mixing (temperature equalization) of the sample
before running the viscosity test.
BALL
BALL IN
TRANSIT
BALL BEGINS
DESCENT
START STOPWATCH WHEN
BOTTOM OF
BALL CROSSES
OVER THE
RING MARK
AT
MIDPOINT
BALL
FINISHES
DESCENT
RING MARK
STOP STOPWATCH WHEN
BOTTOM OF
BALL CROSSES
OVER RING
MARK
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III. CALCULATIONS
III.1 Dynamic Viscosity
With Newtonian liquids absolute values of the dynamic viscosity are calculated, where as,
for non-Newtonian liquids, relative values of the dynamic viscosity (apparent viscosity) are
calculated.
The dynamic viscosity is calculated according to the following equation:
Equation 1:
where: η dynamic viscosity [mPa•s]
t travelling time of the ball [s]
ρ
ρ
K ball constant according to test certicate [mPa·cm
F working angle constant
η = t(ρ
density of the ball according to the test certicate [g/cm3]
1
density of the sample [g/cm3]
2
- ρ
1
)K•F
2
3
/g]
Angle of inclination a
(applied to the level)
80° (DIN) 1.0
70° 0.952
60° 0.879
50° 0.778
Working angle constant F
The density and ball constant are each stated in the test certicate.
Consideration for buoyancy of the ball in the sample is accounted for by means of (ρ1-ρ2) in
equation (1).
The density of the sample can be determined by:
• referring to the material specications from the manufacturer of the uid
• measuring with a densitometer
Note: Be sure to measure the sample density at the same temperature at which the viscosity
will be measured.
The density of the sample must be determined exactly when the amount (ρ
The use of the glass ball requires the determination of the density of the sample ρ
3
decimal position in g/cm
. For metal balls, the 2nd decimal position is sufcient. For glass
balls, the density of the measuring substance is determined to 0.001 g/cm
3
0.01 g/cm
.
) becomes small.
1-ρ2
3
, for metal balls to
to the 3rd
2
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III.2 Kinetmatic Viscosity
The conversion of the dynamic viscosity into the kinematic viscosity is accomplished using the
following equation:
Equation 2:
η
ν =
ρ
2
ν Kinematic viscosity [mm
η Dynamic viscosity [mPa•s]
ρ2 Density of the sample [g/cm3]
2
/s]
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IV. DETERMINATION OF THE NON-NEWTONIAN BEHAVIOR
Non-Newtonian behavior can be determined when different measurement times are recorded
with repeated tests.
IV.1 Thixotrophy/Rheopexy
Thixotropy (rheopexy) is indicated if the traveling times for a ball decreases (increases) when
repeated measurements are made on the same volume of sample.
NOTE: If temperature control is not done correctly, thixotropy or rheopexy can be inferred
by mistake.
Rotational or Capillary Viscometers should be used for better determination of ow behavior.
IV.2 Structural Viscosity (Pseudoplasticity and Dilatancy)
Using the KF40 Falling Ball Viscometer at different angles may serve to determine pseudoplastic or dilatant behavior for non-Newtonian liquids. If the sample is non-Newtonian, the
travel time of the ball multiplied by the sine of the working angle for the KF40 will not remain
constant. This infers non-Newtonian ow behavior. For pseudoplasticity, the calculated value
decreases; for dilatancy, it increases.
NOTE: If temperature control is not done correctly, pseudoplasticity or dilatancy can be
inferred by mistake.
Details about the relative values for pseudoplasticity and dilatancy are related to the diameter
of the ball and the working angle.
More sophisticated equipment, like rotational viscometers/rheometers, should be used for detailed examination of non-Newtonian materials.
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Appendix A - Maintenance
A.1 Exchanging the Sample Tube
1. Loosen the two set screws of the sample tube screw ttings (above and below).
a. Empty the water jacket and sample tube. Make sure the water jacket is clean on
2. Unscrew both of the sample tube screw ttings using a ring nut key.
3. Pull off the rubber seal (washer) on one end of the sample tube.
4. Pull the sample tube out at the other end.
5. Insert the new sample tube and also wet the sample tube gaskets and washers.
6. Assemble the sample tube in the reverse order. Observe that the ends of the sample tube
7. Re-calibrate all the ball constants according to Appendix B.
Caution Glass Components. Excessive force may result in broken glass.
the inside surface before reassembling.
project evenly from the upper and lower plates.
A.2 Exchanging the Water Bath Jacket
1. Remove the sample tube.
a. Empty the water jacket and sample tube. Make sure the water jacket is clean on
2. Unscrew the upper and lower plates on the connecting bar.
3. Unscrew the three lower nuts on the viscometer.
4. Replace rubber washers and insert the new water bath jacket.
5. Put on the upper plate and screw down the nuts evenly.
6. Fix the lower plate an the lower connecting bar.
7. Assemble the sample tube.
8. Calibrate all the ball constants according to Appendix B.
Caution Glass Components. Excessive force may result in broken glass.
the inside surface before reassembling.
A.3 Exchanging the Ball or the Viscometer
1. Exchange the balls or viscometer.
2. Re-calibrate the ball constants according to Appendix B.
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Appendix B - Calibration of the Ball Constants
Brookeld’s certication of the instrument is performed with Ball #2 and Ball #3 as well as
using the Cannon N44 viscosity standard with a nominal value of 92mPa
Re-calibration of the ball constants is required by the operator if:
1. changes in the sample tube or water jacket were made
2. one or more balls were replaced
The calibration requires the use of a Newtonian mineral oil viscosity standard. Choice of the
viscosity standard is according to the ball. Use the appropriate Cannon or Brookeld viscosity
standard that falls within the viscosity measurement range.
BALL NO. 1 2 3 4 5 6
Recommended Viscosity
Standards
(cP, mPa•s)
The calibration is made according to the method in DIN 53015 at 20°C ± .05 C. A suitably
calibrated thermometer can be obtained from your Brookeld dealer, on request.
Cannon Cannon Cannon Cannon Cannon N/A
S3 N10 N100 N350 N1000 N/A
3.9 cP @
20°C
21 cP @
20°C
283 cP @
20°C
830 cP @
20°C
•s at 20°C.
2900 cP @
20°C
N/A
Ball #6 is not recommended for use in performing a calibration check.
The ball constants are determined from (5) running times, in both forward and reverse direction.
The ball constant is calculated according to the following equation:
Equation 3:
K =
η
(ρ
1-ρ2)
• t
t Mean value from 5 running times [s]
η Dynamic viscosity of the calibrating uid [mPa•s] at 20°C ± .05 C
Density of ball [g/cm3]
ρ
1
Density of calibrating uid [g/cm3]
ρ
2
Note: Be sure to measure the sample density at the same temperature at which the viscosity
will be measured.
The expected value of the constant should be similar to the constant stated in the test certicate.
For Ball No. 6, the ball constant changes insignicantly as a function of the falling tube diameter
and diameter of the ball, so that the ball constant is calculated according to the following equation:
Equation 4:
K6 = 1.4057(D-d6)
(0.75042+1.82637 )
d
D
6
D Falling tube diameter (see calibration certicate)
Diameter of Ball No. 6 (see calibration certicate)
d
6
Ball constant of Ball No. 6
K
6
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Appendix C - Warranty Repair and Service
Brookeld Viscometers are guaranteed for one year from date of purchase against defects in materials
and workmanship. They are certied using primary viscosity standards traceable to the National Institute
of Standards and Technology (NIST). The Viscometer must be returned to Brookeld Engineering
Laboratories, Inc. or the Brookeld dealer from whom it was purchased for no charge warranty service. Transportation is at the purchaser’s expense. The Viscometer should be shipped in its carrying
case together with all spindles and the guardleg if originally provided with the instrument.
For repair or service in the United States call Brookeld to obtain a Return Authorization Number.
Record this number on the Repair Return Form which you can download from the Brookeld website.
A tear cut copy is at the end of the manual. Return your instrument to:
Brookeld Engineering Laboratories, Inc.
11 Commerce Boulevard
Middleboro, MA 02346 U.S.A.
Telephone: (508) 946-6200 FAX: (508) 923-5009
www.brookeldengineering.com
For repair or service outside the United States consult Brookeld Engineering Laboratories, Inc. or
the dealer from whom you purchased the instrument.
For repair or service in the United Kingdom return to:
Brookeld Viscometers Limited
1 Whitehall Estate
Flex Meadow, Pinnacles West
Harlow, Essex CM19 5TJ, United Kingdom
Telephone: (44) 27/945 1774 FAX: (44) 27/945 1775
www.brookeld.co.uk
For repair or service in Germany return to:
RheoTec Messtechnik GmbH
(A Division of Brookeld)
Schutterwaelder Strasse 23
D-01458 Ottendorf-Okrilla, Germany
Telephone: (49) (035205) 5967-0 FAX: (49) FAX: 49 (035205) 5967-30
www.rheotec.de
For repair or service in China return to:
Guangzhou Brookeld Viscometers and Texture Instruments Service Company Ltd.
Room C1, 5/F, Tianxing Building East Tower, No. 21, Zhongshan Yi Road, Yuexiu District
Guangzhou, 510600, P. R. China
Telephone: (86) 20/3760-0548 FAX: (86) 20/3760-0548
www.brookeld.com.cn
On-site service at your facility is also available from Brookeld. Please contact our Service
Department in the United States, United Kingdom, Germany or China for details.
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