Eppendorf UVette User Manual download pdf (Page 8)

8

Eppendorf® UVette® — Instructions for use

5 Troubleshooting

5 Troubleshooting

5.1 Error search

Symptom/

message

Cause Remedy

Measured values

are imprecise.

• The blank value and sample

value have been measured

in different cuvettes.

 Measure the blank value and

sample value in the same

UVette.

• The position of the UVette in

the device is not correct.

• UVette was inserted

incorrectly.

 Press the UVette firmly onto

the base of the cuvette shaft

or adapter.

 The UVette must be inserted

in the device in the same

direction for the blank

measurement and sample

measurement. The UVette

may not be rotated 180°.

• The UVette was used for

more than one

measurement.

 Each UVette may only be

used for one measurement

(blank measurement or

sample measurement).

Measured values

are not plausible.

• The light path height of the

UVette does not match the

light path height of the

device.

 Use the adapter (not with the

Eppendorf BioPhotometer

or Eppendorf

BioSpectrometer).

 The adapter may only be

used with the light path

height that matches the

photometer.

• Optical path length of the

UVette does not match the

value set in the device.

 Insert the UVette in the

device so the required

optical path length (2mm/10

mm) is penetrated.

 If the optical path length has

been changed, the blank

value also needs to be

updated.

 Set the optical path length

parameter in the device

(2mm/10 mm).

• The wavelength is below

220nm or above 1600nm.

 The UVette may only be

used for wavelengths of

220nm to 1600nm.

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