Metrohm 797 VA Computrace - Manual (Page 112)

4 Appendix
797 VA Computrace / Hardware-Manual 8.797.8001EN
104
Quant. Order No. Description
1 6.1415.150 Measuring vessel
borosilicate glass, incl. 6.2036.000 holding ring
Volume: 5 ... 70 mL
1 6.2709.040 Stopper
made of PVC, incl. 2 E.301.0004 O-rings of NBR
(nitril rubber)
For closing the MME opening when the RDE is
used; with two dummy holes (thread M6) for
holding the two MME gas lines not used in
operation with the RDE.
1 6.2802.000 Polishing kit
for mechanical regeneration of the active
surface of 6.1204.XXX electrode tips
comprising: 1
× 2 g α-Al
2
O
3
(0.3 μm)
1 × polishing cloth
4.3.3 6.5327.010 MVA-As: Equipment for As-determination
Quant. Order No. Description
1 6.0728.020 Ag/AgCl reference system
with ceramic diaphragm
Ag/AgCl/c(KCl) = 3 mol/L
Together with the 6.1245.010 Electrolyte
vessel forms a complete reference electrode
(double-junction construction, assembly, see
section 2.5.2).
The Ag/AgCl reference system is supplied
with a screwed-on holder filled with c(KCl) =
3 mol/L.
1 6.1204.150 Au - Electrode tip
Forms the rotating disc electrode (RDE).
together with the 6.1204.210 Drive shaft.
Shaft material: PEEK
Disk diameter: 3.0 ± 0.1 mm
Concentricity error: ≤ 0.2 mm
Surface sidewise.
11
116
52.5
M3
∅7
∅78
∅23
80
68