CCQM-K96.2023
MEASURAND Amount content of oxidants expressed as potassium dichromate
NOMINAL VALUE 3.4 mol/kg
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mol/kg.
CCQM-K96.2023
MEASURAND Amount content of oxidants expressed as potassium dichromate
NOMINAL VALUE 3.4 mol/kg
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mol/kg.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
(mol/kg) |
(mol/kg) |
(mol/kg) |
||
| CENAM | -0.00155 | 0.00044 | ||
| INMETRO | -0.00125 | 0.00048 | ||
| KRISS | 0.00034 | 0.00040 | ||
| NIM | -0.00010 | 0.00042 | ||
| NMIJ | 0.00015 | 0.00045 | ||
| SMU | 0.00010 | 0.00039 |
| Metrology area, Sub-field | Chemistry and Biology, Electrochemistry |
| Description | Assay of potassium dichromate |
| Time of measurements | 2023 - |
| Status | Report in progress, draft A |
| Measurand | Amount content of oxidants expressed as potassium dichromate |
| Transfer device | High purity potassium dichromate |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Pilot institute |
KRISS
Korea Research Institute of Standards and Science Korea, Republic of |
| Contact person | Kyungmin Jo 82-42-868-5621 |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
CCQM-K96.2023
MEASURAND Amount content of oxidants expressed as potassium dichromate
NOMINAL VALUE 3.4 mol/kg
The key comparison reference value xR and its associated standard uncertainty uR are calculated according to Section 8 of the CCQM-K96.2023 Final report, with respect to the median as best estimate using results from all participants.
xR = 3.39872 mol/kg uR = 0.00019 mol/kg
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in mol/kg:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence where Ui = 2 ((1 - (2/m)ui2 + uR2))1/2 where m is the number of results contributing to the KCRV (see section 9 of the CCQM-K96.2023 Final report).
CCQM-K96.2023
MEASURAND Amount content of oxidants expressed as potassium dichromate
NOMINAL VALUE 3.4 mol/kg
xi result of measurement reported by laboratory i, Labi
ui combined standard uncertainty of xi
kLabi coverage factor reported by laboratory i,
ULabi expanded uncertainty of xi at 95 % level of confidence where ULabi= kLabiui
| Labi | xi | ULabi | kLabi | |
| mol/kg | mol/kg | |||
| CENAM | 3.397167 | 0.000307 | 2.1 | |
| INMETRO | 3.397473 | 0.003850 | 2.1 | |
| KRISS | 3.399055 | 0.000273 | 2.8 | |
| NIM | 3.398623 | 0.000242 | 2.0 | |
| NMIJ | 3.398872 | 0.000314 | 2.0 | |
| SMU | 3.398815 | 0.000129 | 2.0 |
