Inhoudsopgave
Advertenties
Beschikbare talen
Beschikbare talen
9 Error limits
20 °C
!
Ex
Error limits
Volume
Partial volume
ml
ml
10'
10
5
1
25'
25
12.5
2.5
50'
50
25
5
* A = Accuracy, CV = Coefficient of variation ** LoE = Limit of error
The titration volume is displayed in 1 µl steps for instrument sizes 10 ml and 25 ml and in 2 µl steps for
instrument size 50 ml. From 20 ml titration volume, an automatic switchover to 10 µl steps takes
place.
The drop size for the 10 ml device is approx. 20 µl and for the 25 ml and 50 ml device approx. 30 µl.
The maximum total error for a single measurement can be calculated approximately from the sum of
the limits of error LoE = A + 2 CV. This is a maximum of ± 30 µl for the 25 ml size and ± 50 µl for the 50
ml size.
The limits of error of Class A glass burettes according to DIN EN ISO 385 are thus met.
997469
Error limits in relation to the nominal capacity (= maximum
volume) indicated on the instrument at equal temperature
(20 ºC/68 °F) of instrument, ambient environment and dis-
tilled water. Testing takes place according DIN EN ISO 8655-
6 with a completely filled instrument and with uniform and
smooth dispensing.
Bottle-top
burette Titrette®
A*
CV*
± %
± µl
%
µl
0.10
10
0.05
5
0.20
10
0.10
5
1.00
10
0.50
5
0.072 18
0.024
6
0.144 18
0.048
6
0.72
18
0.24
6
0.06
30
0.02
10 0.2
0.12
30
0.04
10 0.4
0.60
30
0.20
10 2
NOTICE
Bottle-top
burettes according to
DIN EN ISO 8655-3
A*
CV* %
± % ±µl
µl
0.3
30
0.1
10 20
0.6
30
0.2
10 20
3
30
1
10 20
0.2
50
0.1
25 30
0.4
50
0.2
25 30
2
50
1
25 30
100
0.1
50 50
100
0.2
50 50
100
1
50 50
9 Error limits
Glass burette
Class A according
to
DIN EN ISO 385
LoE**
± µl
Operating manual
65
Advertenties
Inhoudsopgave
