Hanna-instruments HI 903 Manuale Utente Scaricare il pdf (Pagina 33)

2-9

SETUP

Figure 4

Figure 3

Figure 5

2.3.4.2 Attaching the Burette

The 5 mL glass syringe features a highly precise inner diameter, which has been individually

verified to produce consistent titrant dosage according to standard ISO 8655. All of the

non-glass, wetted syringe and valve components, including the shoulders and plunger cap,

are constructed from PTFE to ensure resistance to both degradation due to Karl Fisher titrant

and water vapor permeability.

Make sure that the mark from the valve actuating cap and the burette body are aligned as

shown in Figure 3. Make sure that the valve positioning wheel on the burette pump is

oriented in the proper position as shown in Figure 5.

While ensuring the correct coupling between the syringe plunger (A) and the pump piston

(B) (see Figure 4), slide the burette into the support on the burette pump (see Figure 5).

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Hanna-instruments HI 903 Manuale Utente Pagina 33