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Densitometer

DEN-1B

-bio

Operating instructions

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Содержание DEN-1B

Страница 1: ...Densitometer DEN 1B bio Operating instructions ...

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Страница 3: ...nts Page 3 DEN 1B Operating instructions Version 1 01 May 2012 1 Safety 4 2 General Information 6 3 Getting started 8 4 Operation of DEN 1B 10 5 Maintenance 12 6 Specifications 13 7 Guarantee and service 14 ...

Страница 4: ... supply and have it checked by a competent person Batteries Use alkaline preferred or rechargeable AAtype batteries ATTENTION DANGER risk of explosion and burns The batteries must be inserted correctly with respect to polarity by following the diagram in the battery case If one battery is reversed two poles or two poles in contact with each other a chemical reaction is produced in minutes that rel...

Страница 5: ... put used batteries in a fire Keep batteries out of reach of children Keep water out of the battery case Follow the disposal instructions and properly dispose of the used battery DURING OPERATION Do not operate the unit in environments with aggressive or explosive chemical mixtures Do not operate the unit if it is faulty or been incorrectly installed For indoor use only Do not use outside laborato...

Страница 6: ...s against antibiotics Identification of microorganisms with various test systems Measuring optical density at fixed wavelength Quantitative evaluation of concentration of dyed solutions that absorb green light The operation principle is based on measurement of optical density with digital presentation of the results in McFarland units The unit is calibrated at the factory and keeps calibration wit...

Страница 7: ...nsions The BaSO solutions do 4 not have the same optical density because size and particle forms differ from those of bacteria and light is diffracted differently Page 7 DEN 1B Operating instructions McFarland Standard 0 5 1 2 3 4 5 Composition Concentration BaSO4 5 2 40 10 mol l 5 4 80 10 mol l 5 9 60 10 mol l 4 1 44 10 mol l 4 1 92 10 mol l 4 2 40 10 mol l Bacterial concentration 6 150 x 10 cell...

Страница 8: ... and open the battery compartment Insert the batteries inside matching correctly poles Alternatively connect the external power supply unit to the socket fig 2 on the rear side of the unit 3 4 Calibration Declaration of Conformity 3 3 Set up Place the unit on the horizontal even working surface The instrument is pre calibrated at the factory for operation with the glass tubes external diam 18 or 1...

Страница 9: ...Densitometer 3 4 6 With a pin press Install button This point of calibration sequence is saved in the memory and the next calibration value is displayed Note It is recommended to calibrate 0 value and as many points as possible to obtain precise results The minimum requirement is to calibrate 2 points closest to working range e g 0 and 6 0 for operation in 0 6 0 McF unit range 3 4 7 Repeat steps 3...

Страница 10: ...evel from the tube bottom using a round bottom tubes 12 mm level from the tube bottom The display goes off if no tube is inserted in the socket during one minute Press On key fig 3 to activate the unit 4 1 If external power supply is used connect it to the mains socket 4 2 Switch ON the unit with the Power switch Fig 2 on the rear panel 4 3 The following indication will be shown on the display fig...

Страница 11: ...tion will be shown on the display fig 3 4 5 Glass and transparent plastic tubes external diameter 16 mm and 18 mm can be used for work with Densitometer An adapter D16 must be used for work with tubes which have external diameter 16 mm Note The unit must be calibrated each time a tube type is changed e g with different outer diameter bottom shape or different material transparent plastic tubes 4 6...

Страница 12: ...e using any decontamination or cleaning method except that recommended check with our Service Department or in other countries with our distributor that the proposed method will not damage the equipment The cases can be cleaned with a damp cloth after disconnection Version 1 01 June 2012 ...

Страница 13: ...scale 3 Display resolution 0 01 McF Measurement time 1 sec Recommended external diameter of tube 18 mm 16 mm when using D16 adapter Sample volume not less than 2 ml Display LCD Input current power consumption 12V 7 mA 0 1 W External power supply input AC 100 240 V 50 60Hz output DC 12V Battery 3 x accumulatorAAtype Dimensions 165x115x75 mm Weight with power supply not more 0 9 kg Grant is committe...

Страница 14: ...nd according to these working instructions this product is guaranteed for TWO YEARS against faulty materials or workmanship 7 2 Service For service return for repair to our Service Department in the UK or in other countries to our distributor 7 Guarantee and Service Version 1 01 June 2012 ...

Страница 15: ...DEN 1B Operating instructions Page 15 Version 1 01 June 2012 ...

Страница 16: ...io Densitometer DEN 1B 30082 1 01 Grant Instruments Cambridge Ltd Shepreth Cambridgeshire SG8 6GB UK Tel 44 0 1763 260811 Fax 44 0 1763 262410 Email labsales grantinstruments com www grantinstruments com ...

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