Instruction Manual HI 98186 Dissolved Oxygen BOD/OUR/SOUR Meter HI 98186 Dissolved Oxygen Meter w w w. h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or turn to the back cover for our worldwide contact list. directives.
TABLE OF CONTENTS WARRANTY ......................................................................................... 2 PRELIMINARY EXAMINATION ................................................................ 4 GENERAL DESCRIPTION ........................................................................ 4 FUNCTIONAL DESCRIPTION .................................................................. 6 SPECIFICATIONS ..................................................................................
PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any damage, notify your Dealer or the nearest Hanna Customer Service Center. Each instrument is supplied with: • HI 76407/4F Polarographic probe with built-in temperature sensors and 4 m (13.4”) cable • HI 76407A Membrane cap (2 pcs) • HI 7041S Electrolyte solution (30 mL) • 4 x 1.
Moreover, the meter offers an extended temperature range from –20 ºC to 120 ºC (–4 ºF to 248 ºF). Other features include: • Log on demand up to 400 samples. • Auto Hold feature, to freeze first stable reading on the LCD. • GLP feature, to view last calibration data. • PC interface. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
FUNCTIONAL DESCRIPTION Front view 1) Liquid Crystal Display (LCD). 2) F1, F2, F3 functional keys. / keys to manually increase/decrease the parameters or to scroll the pa3) rameter list. 4) ESC key to leave current mode, exit calibration, setup, help, etc. 5) CAL key, to enter/exit calibration mode. 6) RCL key, to enter/exit view logged data mode. 7) SETUP key, to enter/exit SETUP mode. 8) ON/OFF key, to turn the instrument ON and OFF. 9) GLP key, to display Good Laboratory Practice information.
Top view 15 14 USB DO 14) Electrode DIN connector. 15) USB connector.
SPECIFICATIONS 0.00 to 50.00 mg/L 0.0 to 600.0 % saturation RANGE 450 to 850 mmHg –20.0 to 120.0 ºC (–4.0 to 248.0 ºF) 0.01 mg/L 0.1 % saturation RE SOL UTION 1 mmHg 0.1 ºC (0.1 ºF) 1.5 % reading ±1 digit ACCURACY @ 20 ºC / 68 ºF ±3 mmHg within ±15 % from the calibration point ±0.2 ºC (±0.4 ºF) (excluding probe error) D O Calibration Temperature calibration • one or 2 points automatic calibration at 100 % (8.26 mg/L ) and 0 % (0 mg/L ).
PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION 1. D.O. Probe 2. Protective Cap 3. Watertight Shielded Cable 4. Polypropylene Probe Body 5. Temperature Sensor 6. O-Ring Seal 7. Silver Chloride Anode 8. Platinum Cathode (sensor) 9. Oxygen Permeable Teflon® Membrane 10.
PROBE CONNECTION AND PREPARATION To take measurements, connect the D.O. probe to the meter securely by aligning the pins with the socket located on the top of the meter, pushing the plug in and tightening the threaded ring. Probes shipped from Hanna Instruments are dry. To hydrate the probe and prepare it for use, connect it to the meter and proceed as follows: 1. Remove the red and black plastic cap. This cap is for shipping purposes and can be thrown away. 2.
OPERATIONAL GUIDE INITIAL PREPARATION The instrument is supplied complete with rechargeable batteries. Proceed with a complete charging process before starting (see page 60). To prepare the instrument for field measurements close the serial communication socket and all unused connector sockets with proper stopper (to ensure waterproof protection). Connect the DO probe to the 7-pin connector. Make sure that the probe sleeve is properly inserted and tighten the threaded ring.
SALINITY COMPENSATION If the sample contains significant concentration of salinity, the read out values must be corrected, taking into account the lower degree of oxygen solubility in this situation. Before taking any DO measurements remember to set the salinity value from the SETUP menu (page 33). The salinity affects the D.O. concentration, decreasing its value. The table below shows the maximum oxygen solubility at various temperatures and salinity levels.
BAROMETRIC PRESSURE COMPENSATION The dissolved oxygen saturation value varies with pressure, so it is important to compensate the effect that pressure has on DO measurements. Altitude, Meters above Sea L evel ºC 0 m 300 m 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900 4000 m m m m m m m m m m m m m ºF 0 14.6 14.1 13.6 13.1 12.6 12.1 11.7 11.2 10.8 10.4 10.0 9.7 9.3 9.0 8.9 32.0 2 13.8 13.3 12.8 12.4 11.9 11.5 11.0 10.6 10.2 9.9 9.5 9.2 8.8 8.5 8.4 35.6 4 13.1 12.6 12.2 11.7 11.
The HI 98186 meter contains a built-in barometer, and it is able to automatically compensate for changes in barometric pressure. If another pressure value than the barometer’s reading is to be used, then the manual pressure feature must be enabled from the SETUP menu (see page 33), and afterwards the pressure value can be set using the ARROW keys. The table below contains a conversion altitude (m) to pressure (mmHg) for the altitude values from the previous table.
BOD MEASUREMENTS Biochemical oxygen demand (BOD) is an indicator for the concentration of biodegradable organic matter present in a sample of water. It can be used to infer the general quality of the water and its degree of pollution. BOD measures the rate of oxygen uptake by microorganisms in a sample of water at a fixed temperature and over a given period of time. To ensure that all other conditions are equal, a very small amount of microorganism seed is added to each sample being tested.
when at least one initial BOD data record has been memorized). By pressing Add New the BOD Parameters screen will be displayed: BOD Parameters: • Bottle ID: a number used to identify a specific bottle. Range: 0000 to 9999. • The type of the Sample: Sample or Seed. • Bottle Volume: the total volume of the BOD bottle. Range: 0.1 to 300.0 mL. • Sample Volume: the volume of sample in the BOD bottle. Range: 0.1 to 300.0 mL (for a seed sample this value is 0.0 mL and cannot be set).
By pressing View ID a list of all the saved BOD initial data records will be displayed. The seed records will have the symbol “*” displayed after the bottle ID. Use the ARROW keys to scroll the list of BOD initial data records. Press More to view detailed information for the selected record. Press PgUp/Pg/Down to view the next/previous screen of information. Use the ARROW keys to view the detailed information about the next/previous record. If Delete is pressed.
BOD evaluation From the BOD measure screen press Compute to evaluate the BOD for a specified sample. The following screen will be displayed. If the date of the current measurement is previous to the date of the selected measurement then the Eval. BOD key will not be displayed. Press MORE to view detailed information for the selected record. Use ARROW keys to select the bottle for BOD evaluation. Press Eval. BOD to compute the BOD for the selected bottle.
Press any key to clear the warning message from the display or press HELP to view detailed information about the warning. Note: If the Autodelete BOD start data option is enabled in SETUP (see page 33), when the BOD result is saved (LOG key pressed) the corresponding BOD initial data record will be automatically deleted from the instrument’s memory.
Note: If the final DO value is greater than the initial DO value an error message will be displayed.
OUR MEASUREMENT The OUR is used to determine the oxygen consumption or respiration rate. It is defined as the mg/L of oxygen consumed per hour. The following equation is used for OUR determination: where: DOSTART = Dissolved oxygen level at start of test DOEND = Dissolved oxygen level at end of test tELAPSED = Elapsed time of test in seconds total volume/sample volume = Dilution factor of sample Before starting an OUR test remember to set the OUR configuration from the SETUP menu (page 33).
If the DO reading is less than the minimum end DO value set during OUR configuration a warning icon will be displayed and a beep will be heard every two seconds. Press Stop to stop the test and the beeper. To end the OUR test before the maximum time interval set during OUR configuration press Stop. If Stop is pressed before the minimum time for the OUR test has elapsed, the instrument will display a warning message. Press Resume to continue the test or Stop to end the test.
• If the DO value at the end of the test is greater than the DO value from the beginning of the test an error message will be displayed. Press Start to begin a new OUR test or ESC to return to the OUR measure screen.
SOUR MEASUREMENT The Specific Oxygen Uptake Rate (SOUR), also known as the oxygen consumption or respiration rate, is defined as the milligram of oxygen consumed per gram of volatile suspended solids (VSS) per hour. This quick test has many advantages: rapid measure of influent organic load and biodegradability, indication of the presence of toxic or inhibitory wastes, degree of stability and condition of a sample, and calculation of oxygen demand rates at various points in the aeration basin.
If the DO value is less than the minimum start DO value, the meter will display an error message, and the test cannot be started. If the minimum start DO condition is met the instrument will display the instantaneous specific oxygen consumption rate and the amount of time that has passed from the beginning of the test.
At the end of the test the meter will display the computed SOUR value and the duration of the test. Press LOG to save a complete set of data regarding the SOUR test. Press Start to begin a new SOUR test. Notes: • If the DO reading is less than the minimun end DO value set during SOUR configuration, a warning message will be displayed. Press any key to clear the message from the screen, or press HELP to view detailed information about the warning.
TEMPERATURE MEASUREMENTS The DO probe has a built-in temperature sensor. The measured temperature is indicated on the display. Allow the probe to reach thermal equilibrium before taking any measurements. This can take several minutes. The greater the difference between the temperature at which the probe was stored and the temperature of the sample, the longer the time will be. Note: If “----” is displayed instead of the measured temperature, the D.O.
Press CAL. The calibration menu will be displayed. Press DO to select the DO calibration. The DO calibration screen will be displayed and the standard 0% saturation (or 0 mg/L, depending on the currently selected measuring unit), will be automatically selected. The hourglass icon will be shown on the display until the reading becomes stable. When the reading is stable and close to the selected standard, the CFM functional key is displayed. Press CFM to confirm the calibration point.
The hourglass icon will be shown on the display until the reading becomes stable. When the reading is stable and close to the selected buffer, the CFM functional key is displayed. Press CFM to confirm the calibration point. The instrument will return to the main screen and will memorize the slope calibration data. Two points automatic calibration Submerge the probe into HI 7040 zero oxygen solution and stir gently for 2-3 minutes. Press CAL. The calibration menu will be displayed.
Press the Manual functional key. The standard value can be changed using the ARROW keys in the range 0 to 100% saturation or 0 to 8.26 mg/L, depending on the currently selected measuring unit. Set the standard value to the determined DO value. The hourglass icon will be shown on the display until the reading becomes stable. When the reading is stable and close to the selected buffer, the CFM functional key is displayed. Press CFM to confirm the calibration point.
The “Calibration cleared” message will be displayed for a few seconds and the meter will return to the main screen. If the manual pressure feature is enabled, the Clear key will be active only for 5 seconds after accessing the DO calibration screen, and afterwards it will be replaced by the Pressure/Standard functional key.
GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding DO calibration is stored for the user to review when necessary. EXPIRED CALIBRATION The instrument is provided with a real time clock (RTC), in order to monitor the time elapsed since the last DO calibration.
SETUP Setup mode allows viewing and modifying the measurement parameters. The following table lists the SETUP parameters, their valid range and the factory default settings. Item Description Valid Value Calibr. Time-out Number of days after Disabled, 1 to 7 days calibr. warning is displayed Salinity The solution’s salt content 0 to 70 g/L BOD Configuration -Sample min The minimum diff. between 0.00 to 50.00 mg/L delta DO the start and the end DO val. -Sample min The minimum end DO value 0.00 to 50.
-Total volume The total volume of the solution to be tested -Sample volume The volume of sample in the solution to be tested -Solids weight Total solids or Volatile Suspended solids weight -SOUR@20 ºC Correct the SOUR value to 20 ºC Autodelete Automatically delete BOD BOD start data start data, after BOD compute Manual pressure Set the pressure value using the ARROW keys Pressure unit 0.1 to 300.0 mL 0.1 mL 0.1 to 300.0 mL 0.1 to 300.0 g/L 0.1 mL 0.
PARAMETER SCREENS Calibration timeout Focus on the Calibration Timeout item. Press Modify. Use the ARROW keys to set the desired value. Press Accept to confirm or ESC to return without saving. Note: If enabled “CAL DUE” warning will be displayed, the set number of days after calibration is over passed. Salinity Focus on Salinity item. Press Modify. Use ARROW keys to change the salinity value. Press Accept to confirm or ESC to exit without saving.
BOD configuration Focus on BOD configuration item. Press Select. Parameters: • Sample min D DO -the minimum acceptable difference between the initial and final DO values for a sample. If the difference is less than this value the meter will show a warning message when evaluating the BOD. Range: 0.00 to 50.00 mg/L. • Sample min end DO - the minimum acceptable final DO value for a sample. If the final DO value is less than this value the meter will show a warning message when evaluating the BOD. Range: 0.
OUR configuration Focus on OUR configuration item. Press Select. Parameters: • Min time - the minimum time for the OUR test. Range: 1 to 3600 seconds. • Max time - the maximum time for the OUR test. The test will stop automatically when the maximum time has elapsed. • Min start DO - the minimum accepted DO value for starting the OUR test. If the DO reading is less than this value the test cannot be started. Range: 0.00 to 50.00 mg/L. • Min end DO - the minimum accepted DO value at the end of the test.
Press Select. • Min time - the minimum time for the SOUR test. Range: 1 to 3600 seconds. • Max time - the maximum time for the SOUR test. The test will stop automatically when the maximum time has elapsed. Range: 0.00 to 50.00 mg/L. • Min start DO - the minimum accepted DO value for starting the SOUR test. If the DO reading is less than this value the test cannot be started. Range: 0.01 to 50.00 mg/L. • Min end DO - the minimum accepted DO value at the end of the test.
If disabled, the user has to delete BOD initial data records that were used in BOD result evaluation, entering View initial BOD data mode. Manual pressure Focus on Manual pressure item. Press the displayed functional key to enable/disable the feature. If enabled, the pressure can be entered by the user, while in measurement screen, using ARROW keys. Pressure unit Focus on Pressure unit item. Press Modify. Use ARROW keys to focus on the desired pressure unit.
Temperature unit Focus on the Temperature unit option. Press the displayed functional key in order to change the temperature unit. Backlight Focus on Backlight item. Press Modify. Use / keys to change intensity then press Accept to confirm. Press ESC to leave without changing. Contrast Focus on the Contrast item. Press Modify.
Use / keys to change intensity then press Accept to confirm. Press ESC to leave without changing. AutoLightOff Focus on the AutoLightOff item. Press one of the functional key to change the option. AutoPowerOff Focus on the AutoPowerOff item. Press Modify. Use ARROW keys to select interval then press Accept. Press ESC to leave without changing. Date/Time Focus on the Date/Time item.
Press Modify. Use / keys to select item. Use ARROW keys to change the focused values. Press Accept to confirm the new setting, or ESC to leave without changing. Time Format Focus on the Time Format item. Press functional key to change the option. Date Format Focus on the Date Format item. Press Modify. Use ARROW keys to select date format then press Accept. Press ESC to leave without changing.
Language Focus on the Language item. Use the desired functional key to change the option. Wait until the new language is loaded. If any language can be loaded, the instrument will work in safe mode. In this mode all messages are displayed in English and Help is not available. BeepOn Focus on the BeepOn item. Press the displayed functional key to enable/disable key. When enabled, beep sounds as a short beep every time a key is pressed or when the calibration can be confirmed.
BaudRate Focus on the BaudRate item. Press Modify. Use ARROW keys to select the desired communication baud. Press Accept to confirm or ESC to exit. Meter Information Focus on the Meter information item. Press Select.
LOGGING This feature allows the user to log DO, BOD, OUR and SOUR measurements. All logged data can be transferred to a PC through the USB or RS232 port. The maximum logging space is 400 records. LOGGING THE CURRENT DATA To store the current reading into memory, press LOG. The instrument will displays for a few seconds the record number and the amount of the free log space (in %). If the LOG space is full, the “Log space is full” message will be displayed for a few seconds when Log key is invoked.
BOD recall: OUR recall: SOUR recall: If no data were logged, the instrument will display “No Records”. Use ARROW keys to scroll the list of records. Press Delete All to enter Delete All screen. Press Delete to enter Delete records screen. Press More to view more information of the focused record. If More is pressed, a complete set of information are displayed. Press PgUp or PgDown to toggle between information screens.
Note: • “S.C. “ message in the title bar means seed corrected. • “not S.C.” message in the title bar means seed not corrected. The Correct functional key will be displayed if the BOD result was not seed corrected. Note: For a seed corrected sample, on last page will be shown the Seed bottle ID used for correction.
Note: In case that the SOUR value was corrected to 20 °C the message “(@20°C)” will be displayed before the SOUR value. Use ARROW keys to view the complete log information about the next/ previous record while are displayed. If Delete is pressed. Use ARROW key to focus the record to be deleted and then press CFM. Press ESC to exit. If Delete All is pressed the instrument asks for confirmation. Press CFM to confirm or ESC to exit without deleting.
PRESSURE CALIBRATION The HI 98186 meter has an internal barometer for automatic pressure compensation for DO readings. The instrument is factory calibrated for pressure measurements and no user calibration is needed. If the pressure reading is inaccurate, pressure calibration should be performed. For an accurate calibration, contact your dealer or the nearest Hanna Customer Service Center or follow the instruction below.
Note: • If a pressure calibration has been previously performed it is possible to erase the calibration by pressing the Clear functional key. • The “Calibration cleared” message will be displayed for a few seconds and the meter will return to the main screen. • If the measured pressure is too far from the calibration point the “Wrong pressure” error message will be shown on the display and the calibration can’t be confirmed. Verify if the value read from the reference barometer was entered correctly.
TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna’s DO probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center, or follow instructions below. The temperature calibration can be performed in 1 or 2 points.
• Use the ARROW keys to set the calibration point values to that of the ice and water mixture, measured by the reference thermometer. • When the reading is stable and close to the selected calibration point, the CFM functional key is displayed. • Press CFM to confirm. • The second expected calibration point is displayed. • Immerse the DO probe into the second vessel as close as possible to the reference thermometer. • Allow a few seconds for the probe to stabilize.
• When the reading is stable and close to the selected calibration point, the CFM functional key is displayed. • Press CFM to confirm. The instrument returns to the main screen. Note: •If the reading is not close to the selected calibration point or the difference between first selected point and second selected point is less than 25 ºC, “Wrong” message will blink.
PC INTERFACE Data transmission from the instrument to the PC can be done with the HI 92000 Windows® compatible software (optional). HI 92000 also offers graphing and on-line help feature. Data can be exported to the most popular spreadsheet programs for further analysis. To connect your instrument to a PC, use an USB cable connector. Make sure that your instrument is switched off and plug one connector to the instrument USB socket and the other to the serial or USB port of your PC.
Change the instrument range according with the parameter value (xx): • xx=20 DO range • xx=21 BOD range • xx=22 OUR range • xx=23 SOUR range The instrument will answer for these commands with: where: is 02 ASCII code character (start of text) is 03 ASCII code character (end of text) : is 06 ASCII code character (recognized command) is 21 ASCII code character (unrecognized command) is 24 ASCII code character (corrupted command) CHR xx COMMANDS REQUI
• 0x10: temperature probe connection • 0x20: DO measure unit (0 = %, 1= mg/L) • 0x01: new GLP data available • 0x02: new setup parameter • 0x04: out of calibration range • 0x08: the meter is in autoend mode; • Reading status: R - in range, O - over range, U - under range • The following status flags are sent for all modes except mode 25 • DO reading range flag • temperature reading range flag • pressure reading range flag • OUR/SOUR reading range flag (sent only if in OUR/SOUR measure mode) • The following
• buffer value including sign and decimal point (this value is sent only if there is a 2 point calibration) (6 chars) • salinity value (3 chars) • pressure value in mmHg, including sign and decimal point (11 chars) • temperature value including sign and decimal point (8 chars) • calibration time: yymmddhhmmss (12 chars). PAR Requests the setup parameters setting.
• maximum time in seconds (4 chars) • minimum start DO including sign and decimal point (6 chars) • minimum end DO including sign and decimal point (6 chars) • total volume including sign and decimal point (6 chars) • sample volume including sign and decimal point (6 chars) • solids weight including sign and decimal point (6 chars) • SOUR temperature correction (1=enabled, 0=disabled) (1char) • The short name of the selected language (3 chars) NSLx Requests the number of logged samples (4 chars) The command
• BOD log data:: • Sample type (1 = sample, 0 = seed) (1 char) • Seed corrected (1 = corrected, 0 = not corrected) (1 char) • Bottle ID (4 chars) • BOD value including sign and decimal point [mg/L] (8 chars) • Bottle volume including sign and decimal point [ml] (6 chars) • Sample volume including sign and decimal point [ml] (6 chars) • Seed volume including sign and decimal point [ml] (6 chars) • Start salinity value [g/L] (3 chars) • End salinity value[g/L] (3 chars) • Start pressure value in mmHg, includi
• OUR value, including sign and decimal point [mg/L/h] (8 chars) • SOUR log data:: • Start DO value including sign and decimal point [mg/L] (8 chars) • End DO value including sign and decimal point [mg/L] (8 chars) • Salinity value [g/L] (3 chars) • Start pressure value in mmHg, including sign and decimal point (11 chars) • End pressure value in mmHg, including sign and decimal point (11 chars) • Start temperature value, including sign and decimal point (8 chars) • End temperature value, including sign and
Notes: •“Err8” is sent if the instrument is not in measurement mode. •“Err6” is sent if the requested range is not available. •“Err4” is sent if the requested set parameter is not available. •“Err3” is sent if the Log on demand is empty. •“Err9” is sent if the battery power is less than 30%. •Invalid commands will be ignored.
BATTERIES RECHARGING/REPLACEMENT The instrument is ready made with rechargeable batteries inside. First time you start working with the instrument performs a complete recharging cycle (about 16 hours). It is recommended to recharge the rechargeable batteries as soon as the battery indicator does not show full scale before starting in field measurements or every time you finish your work with the instrument.
recharger. The front LED will turn on (green). • Place the instrument on the battery recharger case. A charging animation will be displayed if the battery capacity is less than 100%. • The complete charging process takes about 16 hours. Notes: • As the charging process is performed at low current, the instrument can be left on the recharger more than 16 hours, without damaging the rechargeable batteries. • It is recommended to turn off the instrument while recharging the batteries.
PROBE MAINTENANCE The oxygen probe is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurements of the sample. Use the protective cap when not in use. To replace the membrane or refill with electrolyte, proceed as follows: Remove the protective cap by gently twisting, and pulling and pulling it off the body of the probe (see fig. 1). Unscrew the membrane cap by turning it counterclockwise (see fig. 2).
TROUBLESHOOTING SYMPTOMS PROBLEM SOLUTION Reading fluctuates up and down (noise). DO probe not properly connected. Insert the probe. Display shows DO reading blinking. Reading out of range. Recalibrate the meter; Check the sample is within measurable range; Meter fails to calibrate or gives faulty readings. Broken DO probe. Replace the probe. At startup the meter One of the keys is displays Hanna logo blocked. permanently. Check the keyboard or contact your dealer.
Important In order to have accurate and stable measurements, it is important that the membrane surface is in perfect condition. This semipermeable membrane isolates the sensor elements from the environment but allows oxygen to enter. If any dirt is observed on the membrane, rinse carefully with distilled or deionized water. If any imperfections still exist, or any damage is evident (such as wrinkles or tears-holes), the membrane should be replaced.
RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences. During operation, ESD wrist straps should be worn to avoid possible damage to the electrode by electrostatic discharges.
SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (210) 4584.2941 • Fax (210) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
