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4. Appendix

700 Dosino, Instructions for Use

37

4 Appendix

4.1  Validation / GLP

Among other things, 

GLP

 (

G

ood 

L

aboratory 

P

ractice) requires the

regular checking of the precision and correctness of analytical in-
struments by means of 

SOP

s (

S

tandard 

O

perating 

P

rocedure).

Recommended literature

• 

Metrohm brochure "Quality management with Metrohm", de-
tailed information about the principles and procedures of Good
Laboratory Practice

• 

Metrohm Application Bulletin 238/1 "Dosimat test according to
GLP/ISO"

• 

Metrohm Application Bulletin 252/1 "Validation of Metrohm ti-
trators according to GLP/ISO9001"

Dosino burets can be validated in several different ways.

• 

Metrodata «Dosing Test» software (6.6025.000) for Win-
dows

®

 3.11/95/NT

PC program for computer-controlled validation of Metrohm
dosing units and exchange units. Apart from a normal personal
computer this requires the use of a Metrohm Titrino and either
a Sartorius or Mettler analytical balance.

 

• 

Metrohm 711 Liquino

The 711 Liquino has a GLP mode which can be used for the
automatic validation of dosing units. The balances of the fol-
lowing distributos are supported: Mettler-Toledo, Sartorius,
AND, Precisa.

• 

Manual validation

Manual validation can be carried out with any Metrohm instru-
ment which supports the 700 Dosino. Metrohm Application
Bulletin 238/1 describes the procedure in detail.

Содержание 700 Dosino

Страница 1: ...700 Dosino Manual 8 700 1023...

Страница 2: ......

Страница 3: ...Metrohm AG CH 9101 Herisau Switzerland Phone 41 71 353 85 85 Fax 41 71 353 89 01 info metrohm com www metrohm com 700 Dosino Manual 8 700 1023 03 2000 dm...

Страница 4: ...gh all the information given in this documentation has been checked with great care errors cannot be entirely excluded Should you notice any mistakes please send us your comments using the address giv...

Страница 5: ...g the dosing drive from the 710 Dosing unit 11 2 3 Dismantling the dosing units ____________________ 12 2 3 1 Opening the housing 13 2 3 2 Centering tube and glass cylinder 14 2 3 3 Centering tube and...

Страница 6: ...ng accuracy according to ISO 8655 3 __________38 4 3 Technical data_________________________________40 4 4 Warranty and Conformity________________________42 4 4 1 Warranty 42 4 4 2 EU Declaration of C...

Страница 7: ...wide range of different appli cations Instead of the standard glass cylinder dosing cylinders made of plastic ETFE are also available for use with aggressive alkalis Reagent exchange with the least po...

Страница 8: ...osinos Dosing For complex dosing tasks such as dosing controlled by time dosing rate or temperature the preparation of standard solutions and dilutions as well as pipetting or sample preparation the D...

Страница 9: ...uction of the Dosino burets 700 Dosino Instructions for use 3 1 2 1 The Dosino as a system component 1 3 Construction of the Dosino burets 1 3 1 The 700 Dosino dosing drive guide cam push rod carrier...

Страница 10: ...pring clip PBTP Centering tube PVDF Dosing piston with piston peg PTFE and graphite 6 1572 XXX for glass cylinder Glass cylinder borosilicate glass 6 1571 XX ETFE dosing cylin der complete with piston...

Страница 11: ...t which has been stored under cold conditions is brought into a warm room then it is possible that the atmospheric humidity could cause water to condense inside the instrument In order to avoid damage...

Страница 12: ...n cable by using force 2 1 2 Safety information General This instrument left our factory in perfect condition from a safety point of view see technical data safety specification The follow ing informa...

Страница 13: ...ely Standard situation Dosing units can be mounted directly on reagent bottles with a GL45 thread Suitable threaded adapters are available for bottles from different chemical manufacturers see accesso...

Страница 14: ...e with a suitable adsorption material for the reagent e g Molecular sieve for moisture sensitive solutions such as KF solutions or others Soda lime for sodium hydroxide CO2 adsorption Screw the adsorb...

Страница 15: ...on peg It has to be flush with the upper edge of the dosing unit If this is not the case see chapter 2 2 3 next page Check the position of the carrier disk of the drive The plastic rib of the carrier...

Страница 16: ...e Dosino or the centering tube of the dosing unit may not be in the exchange position The stopcock washer carrier must fit in the dosing unit recess provided for it Please consult the previous diagram...

Страница 17: ...on the control instru ment The valve will automatically turn to the Exchange posi tion Detailed information about the manual operation of Dosinos can be found in the Instructions for Use of your inst...

Страница 18: ...r Use 12 2 3 Dismantling the dosing units Dosing unit with plastic cylinder Dosing unit with glass cylinder Housing Centering tube Dosing cylin der with pis ton and stop cock washer Distributor Distri...

Страница 19: ...E cylinders are used for alkaline reagents You should empty the cylinder before opening a dosing unit by using the EMPTY function of the control instrument 2 3 1 Opening the housing The internal const...

Страница 20: ...the housing does not slip out of place 2 3 2 Centering tube and glass cylinder The centering tube is plugged onto the black cylinder base Loosen it carefully from the cylinder base You can now see th...

Страница 21: ...ers will snap shut and you can pull out the piston with the white knob some force is required The glass cylinder can now be removed from the cylinder base by twisting it firmly Leave the black stopcoc...

Страница 22: ...c part Open the housing as described in section 2 3 1 Lift off the centering tube in one piece i e both plastic parts from the distributor The upper plastic part can simply be pulled off upwards You c...

Страница 23: ...press it gently and as uniformly as possible onto the cylinder base while moving it backwards and forwards slightly Do not tilt Check whether the glass cylinder is seated properly on the cylinder bas...

Страница 24: ...he centering tube must be correctly positioned in order to assemble the housing Rotate the centering tube on the distributor so that the marking rib on the centering tube coin cides with the marking r...

Страница 25: ...oned correctly The head of the piston must be flush with the upper edge of the housing Use the piston pliers to pull out the piston until the stop is reached and press the complete in verted dosing un...

Страница 26: ...closes the double rib on the outside of the lower part Just as for the dosing unit with glass cylinder care must be taken that the marking ribs on the distributor coincide with those on the outside of...

Страница 27: ...010 Attach the support mounting to a support rod 10 mm dia Place the dosing unit without bottle in the mounting from above Screw the reagent bottle onto the dosing unit from below Version free stand a...

Страница 28: ...XXX For titrations in particular we recommend the use of our 727 Ti Stand with or without built in magnetic stirrer 2 5 4 Direct mounting on canisters A Dosino with dosing unit can be directly mounted...

Страница 29: ...attached to the next one The Dosino remains plugged into the control instrument Before a Dosino buret is used we recommend that the dosing cyl inder and the tubing are rinsed through once with reagent...

Страница 30: ...s in movement to a par ticular valve setting The dosing motor of the drive moves the dosing piston by means of a push rod and in this way ejects or aspires liquid from or into the cylinder via the sel...

Страница 31: ...e dosing unit This can be used with the PREP function for ejecting the liquid When emptying the dosing unit port 4 is used as the air inlet Port 0 Venting the storage bottle M6 threaded connection at...

Страница 32: ...it is necessary to enter the lengths and diameters of all the connected filling and dosing tub ing This is carried out in the dosing unit configuration of the par ticular instrument Always use the PR...

Страница 33: ...nstructed so that only a small exchange volume is present Empty the dosing unit with the EMPTY function of the control instrument When the dosing unit has been emptied with the EMPTY func tion of the...

Страница 34: ...tness of the dosing piston and cylinder If there is liquid above the piston this means that the dosing cylinder is either not lubricated at all or is not adequately lubricated Check whether the sealin...

Страница 35: ...topcock washer in cylinder base Distributor disk with 4 ports in distributor Leave the white distributor disk in the distributor If the cock and distributor disks are stuck together they can be separa...

Страница 36: ...cylinder outlet on the bottom of the cylinder base If the distributor disk was removed it can be reassembled as fol lows Use a plastic pipetting tip to extend the opening of the distribu tor Lightly g...

Страница 37: ...and press the inverted dosing unit against a flat surface See page 10 The push rod of the drive is wrongly positioned Place the drive on the empty housing of a dosing unit and press FILL or EXCH Dosin...

Страница 38: ...echnician from your local Metrohm service center If a dosing cylinder filled with a chemical is opened improperly this can damage the dosing unit and or the dosing drive The dosing drive housing must...

Страница 39: ...ylinder or dosing tubing Possible causes Leaking connections Check the tubing ends in particular that of the aspiration tub ing Tighten all tubing connections manually Check whether the housing is pro...

Страница 40: ...essary remove the housing and then put it back on again The reagent releases a lot of gas i e dissolved air forms bubbles Carry out PREP Lower the filling speed If necessary degas the reagent i e with...

Страница 41: ...the screw nipple becomes loose 3 4 3 Dosing drive Drive carrier rotates continuously Possible cause Dosino electronics damaged Send the dosing drive to your local Metrohm service center for repair Dos...

Страница 42: ...me is dosed Possible cause Dosing unit mounted incorrectly or wrongly assembled Remove dosing unit and put it back on again Check whether the nominal volume on the housing coincides with the effective...

Страница 43: ...ording to GLP ISO9001 Dosino burets can be validated in several different ways Metrodata Dosing Test software 6 6025 000 for Win dows 3 11 95 NT PC program for computer controlled validation of Metroh...

Страница 44: ...of a tenfold measurement from any given volume in the range of 10 to 100 of the nominal volume s s V V e or in 0 100 V Vs V s e V mean s V selected volume 0 V nominal volume Maximum permissible rando...

Страница 45: ...the ISO 8655 3 Draft International Standard Piston operated volumetric apparatus part 3 Piston burettes which is to come to effect in the year 2000 Metrohm burets with glass cylinders in general have...

Страница 46: ...inders of 2 5 10 20 50 mL volume Resolution 10 000 increments per cylinder volume Dosing accuracy Metrohm Dosino burets with glass cylinders fulfill the performance requirements of the ISO 8655 3 draf...

Страница 47: ...h must be observed by the operator in order to ensure safe opera tion of the instrument Electromagnetic compatibility EMC Emission This instrument meets the requirements of the standards EN 50081 1 01...

Страница 48: ...the absence of guaranteed features the orderer has no rights or claims except those mentioned above If damage of the packaging is evident on receipt of a consignment or if the goods show signs of tran...

Страница 49: ...ctromagnetic compatibility basic specification Emitted Interference EN 50082 1 Electromagnetic compatibility basic specification Interference Immunity EN 61010 Safety requirements for electrical labor...

Страница 50: ...the following standards Electromagnetic compatibility Emission EN55011 class B EN55022 class B EN50081 92 Immunity EN50082 2 IEC801 2 IEC1000 4 2 class 3 IEC801 3 IEC1000 4 3 ENV50140 ENV50204 class...

Страница 51: ...134 010 Mini Din socket DB9 plug 729 Dosimat Interface 2 729 0010 for the connection of 4 Dosinos to the 730 Sample Changer etc 710 Dosing units with glass cylinder for 700 Dosino incl accessories 2 m...

Страница 52: ...panner for screwing down plastic nipples 6 2739 000 Grease without silicon for dosing cylinder 2 g 6 2803 010 Bottles and accessories Thread adapter 32 mm GL45 Riedel de Ha n Fluka 6 1618 000 Thread a...

Страница 53: ...1570 210 6 1571 210 20 mL volume for dosing unit 6 1570 220 6 1571 220 50 mL volume for dosing unit 6 1570 250 6 1571 250 Piston for glass cylinders 2 mL volume for dosing unit 6 1570 120 6 1572 120 5...

Страница 54: ...magnetic compatibility 41 EMPTY 23 EMC 41 Emission 41 EMPTY 13 27 ETFE cylinder 7 16 20 45 Exchange position 31 Exchange position 10 11 Exchange volume 13 Faults 6 Filling inlet 25 Filling the dosing...

Страница 55: ...parts 47 Spring clip 14 18 35 Stand assembly 21 Standard port occupancy 25 Standard solutions 2 Stopcock washer 17 29 Support mounting 21 47 Technical data 40 Thread adapter 8 22 Thread stopper 25 Thr...

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