Cleaning or Exchanging the Holmium Oxide Filter

Quando

If holmium oxide filter is contaminated

Ferramentas necessárias

Quant.		p/n	Descrição
1			Chave de fendas, Pozidriv Nº 1 PT3
1			Screwdriver, flat blade
2			Chave de 1/4 pol. for capillary connections
2			Par de pinças

Peças necessárias

Quant.		p/n	Descrição
1		79880-22711	Holmium oxide filter

Pré-requisitos

Turn the lamp(s) off.
Open the doors of the module.
Remove the flow cell, see Remover e instalar uma Célula de fluxo.

NOTA

The glass tends to build a film on its surface even under normal environmental conditions. This is a phenomenon, which can be found also on the surface of several other glasses and has something to do with the composition of the glass. There is no indication, that the film has an influence on the measurement. Even in the case of a thick film, which scatters the light remarkably, no shift of the peak positions is to be expected. A slight change in the absorbance might be possible. Other components within the light path (lenses, windows, ...) are also changing their behavior over the time.

NOTA
Do not scratch the holmium oxide filter.
The holmium oxide filter can be cleaned with alcohol and a lint-free cloth.
NOTA
The holmium oxide filter can be cleaned with alcohol and a lint-free cloth.
Perform a holmium oxide test (see Holmium Oxide Test) to check the proper function of the holmium oxide filter.
Install the flow cell, see Remover e instalar uma Célula de fluxo.
Turn on the flow.

21-jun-2025