Metrohm 711 Liquino - Manual (Page 132)

4.9 GLP mode - validation
711 Liquino, Instructions for use 126
Detail Report
711 Liquino 0220 711.0011
date 1998-10-03 time 11:32 - 11:35
*** Dev. Dept.
*** dm
*** Metrohm Ltd
mode: GLP user method: GLP test
operator D. Miller
drive id Dosino1
dos.unit id Dos20_1
dosing unit size 20 mL
temperature 22.50 °C
liquid water
liquid density 0.9977 g/mL
air density 0.0012 g/mL
dens. std. weights 8.0000 g/mL
calc. factor 1.0034033
nom.v. mass act.vol abs.err rel.err
(mL) (g) (mL) (uL) (%)
----------------------------------------
2.000 1.9900 1.9968 -3.2 -0.161
3.532 3.5100 3.5219 -10.1 -0.285
5.018 4.9900 5.0070 -11.0 -0.220
8.764 8.7300 8.7597 -4.3 -0.049
9.714 9.6700 9.7029 -11.1 -0.114
11.258 11.2200 11.2582 0.2 0.002
13.758 13.7100 13.7567 -1.3 -0.010
16.290 16.2300 16.2852 -4.8 -0.029
17.642 17.6000 17.6599 17.9 0.101
20.000 19.9300 19.9978 -2.2 -0.011
----------------------------------------
>evaluation
intercept (<30) -11.2 uL ok
slope (+/-0.003) 1.00076 ok
error max.vol. (<60) -2 uL ok
-> GLP test PASSED!
============
← instrument number and program version
← date and time
← 3-line report header
← mode and method name
← request texts
← temperature of liquid
← density of liquid at given temperature
← density of air at given temperature *
← density of calibration weight *
← correction factor for taking buoyancy of air into account
when weighing in sample *
← table of values
← results (with limits)
← result
* The correction factor for buoyancy of the air is automatically multiplied with the sample weight.
The factor is calculated as follows:
Correction factor = 1 / ρ
F
∗ ( 1 + ρ
L
/ρ
F
– ρ
F
/ρ
S
)
where
ρ
F
density of liquid in g/mL
ρ
L
density of air in g/mL
ρ
S
density of balance calibration weight in g/mL