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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Philippines, NMLPHIL (National Metrology Laboratory of the Philippines)
| Matrix or material |
Analyte or component |
Dissemination range of measurement capability |
Range of certified values in reference materials |
| Mass fraction in µg/kg |
Relative expanded uncertainty in % |
Mass fraction in % |
Absolute expanded uncertainty in % |
| drinking water/ fresh water |
arsenic |
0.5 to 50 |
9.4 to 7.3 |
|
|
-
Mechanism for measurement service delivery :
Provision of reference values for both PT and RM samples, Measurement services
-
Approved on
20 July 2026
-
Institute service identifier : NMLPHIL/MIC/1
-
CMC ID :
APMP-QM-PH-00000R2P-1
| Matrix or material |
Analyte or component |
Dissemination range of measurement capability |
Range of certified values in reference materials |
| Mass fraction in µg/kg |
Relative expanded uncertainty in % |
Mass fraction in % |
Absolute expanded uncertainty in % |
| drinking water/ fresh water |
cadmium |
5 to 50 |
5.4 to 3.5 |
|
|
-
Uncertainty table CMC
{"row_1":{"col_1":"<strong>Source of uncertainty</strong>","col_2":"<strong contenteditable=\"true\">Typical value</strong>","col_3":"<strong>Standard uncertainty</strong>","col_4":"<strong>Unit</strong>","col_5":"<strong>Type</strong>"},"row_2":{"col_1":"Gravimetric Preparation of Standard","col_2":"0.26942","col_3":"0.00034","col_4":"µg/kg","col_5":"A"},"row_3":{"col_1":"Gravimetric Preparation of Sample","col_2":"40.0045","col_3":"0.00051","col_4":"g","col_5":"A"},"row_4":{"col_1":"Gravimetric Preparation of Solution","col_2":"80.0159","col_3":"0.00041","col_4":"g","col_5":"A"},"row_5":{"col_1":"Method Precision","col_2":"1","col_3":"0.00015","col_4":"n/a","col_5":"A"},"row_6":{"col_1":"Method Bias","col_2":"1.0401009","col_3":"0.009145514","col_4":"n/a","col_5":"B"}}
-
Uncertainty equation CRM :
-
Mechanism for measurement service delivery :
Provision of reference values for both PT and RM samples, Measurement services
-
Approved on
20 July 2026
-
Institute service identifier : NMLPHIL/MIC/2
-
CMC ID :
APMP-QM-PH-00000R2Q-1
| Matrix or material |
Analyte or component |
Dissemination range of measurement capability |
Range of certified values in reference materials |
| Mass fraction in mg/kg |
Relative expanded uncertainty in % |
Mass fraction in % |
Absolute expanded uncertainty in % |
| seafood |
lead |
0.09 to 10 |
1.5E1 to 5.5 |
|
|
-
Uncertainty table CMC
{"row_1":{"col_1":"<strong>Sources of Uncertainty</strong><br>","col_2":"<strong>Pb</strong><br><br>"},"row_2":{"col_1":"Weight of Sample<br><br>","col_2":"n.a.<br><br>"},"row_3":{"col_1":"Regression<br><br>","col_2":"78.90%"},"row_4":{"col_1":"Gravimetric Preparation of Standard<br><br>","col_2":"0.18%<br><br>"},"row_5":{"col_1":"Gravimetric Preparation of Pre-Digestion Sample<br><br>","col_2":"0.10%<br><br>"},"row_6":{"col_1":"Gravimetric Preparation of Post-Digestion Solution<br><br>","col_2":"0.00%<br><br>"},"row_7":{"col_1":"Method Precision<br><br>","col_2":"0.02%<br><br>"},"row_8":{"col_1":"Method Bias<br><br>","col_2":"20.80%<br><br>"},"row_9":{"col_1":"Moisture analysis","col_2":"<br>0.06%"}}
-
Uncertainty equation CRM :
-
Mechanism for measurement service delivery :
Provision of reference values for both PT and RM samples, Measurement services
-
Approved on
20 July 2026
-
Institute service identifier : NMLPHIL/MIC/4
-
CMC ID :
APMP-QM-PH-00000R2S-1
| Matrix or material |
Analyte or component |
Dissemination range of measurement capability |
Range of certified values in reference materials |
| Mass fraction in mg/kg |
Relative expanded uncertainty in % |
Mass fraction in % |
Absolute expanded uncertainty in % |
| seafood |
mercury |
0.05 to 5 |
1.4E1 to 1.0E1 |
|
|
-
Uncertainty table CMC
{"row_1":{"col_1":"<strong>Sources of Uncertainty</strong>","col_2":"Hg"},"row_2":{"col_1":"<br>Weight of Sample<br><br>","col_2":"0.07%<br><br>"},"row_3":{"col_1":"Regression<br><br>","col_2":"90.90%"},"row_4":{"col_1":"Gravimetric Preparation of Standard<br><br>","col_2":"0.37%<br><br>"},"row_5":{"col_1":"Gravimetric Preparation of Pre-Digestion Sample<br />\n ","col_2":"n.a.<br><br>"},"row_6":{"col_1":"Gravimetric Preparation of Post-Digestion Solution<br><br>","col_2":"n.a.<br>"},"row_7":{"col_1":"Method Precision<br><br>","col_2":"0.02%<br><br>"},"row_8":{"col_1":"Method Bias","col_2":"8.64%"},"row_9":{"col_1":"Moisture analysis","col_2":"0.02%<br>"}}
-
Uncertainty equation CRM :
-
Mechanism for measurement service delivery :
Provision of reference values for both PT and RM samples, Measurement services
-
Approved on
20 July 2026
-
Institute service identifier : NMLPHIL/MIC/3
-
CMC ID :
APMP-QM-PH-00000R2R-1
Mass ,
Mass
:
100 g
Mass standard
Absolute expanded uncertainty
:
0.16 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/14
CMC ID :
APMP-M-PH-000006DZ-1
Mass ,
Mass
:
5 g
Mass standard
Absolute expanded uncertainty
:
5.0E-2 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/10
CMC ID :
APMP-M-PH-000006DV-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
0 °C to 90 °C
Temperature sensor with display unit
Absolute expanded uncertainty
:
3.0E1 mK
Comparison in liquid bath
IPRT (Hyteresis included) and thermistor sensors, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /DT
CMC ID :
APMP-T-PH-0000076O-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
90 °C to 250 °C
IPRT
Absolute expanded uncertainty
:
3.0E1 mK
Comparison in liquid bath
Hysteresis included, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /IPRT
CMC ID :
APMP-T-PH-0000076L-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
0 °C
IPRT
Absolute expanded uncertainty
:
1.0E1 mK
Comparison in ice bath
Hysteresis included, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /IPRT
CMC ID :
APMP-T-PH-0000076M-1
Mass ,
Mass
:
200 mg
Mass standard
Absolute expanded uncertainty
:
2.0E-2 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/6
CMC ID :
APMP-M-PH-000006DR-1
Mass ,
Mass
:
500 mg
Mass standard
Absolute expanded uncertainty
:
2.5E-2 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/7
CMC ID :
APMP-M-PH-000006DS-1
Mass ,
Mass
:
10 mg
Mass standard
Absolute expanded uncertainty
:
8.0E-3 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/2
CMC ID :
APMP-M-PH-000006DN-1
Mass ,
Mass
:
5 kg
Mass standard
Absolute expanded uncertainty
:
8 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/19
CMC ID :
APMP-M-PH-000006E4-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
90 °C to 250 °C
Temperature sensor with display unit
Absolute expanded uncertainty
:
3.0E1 mK
Comparison in liquid bath
IPRT (Hyteresis included) and thermistor sensors, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /DT
CMC ID :
APMP-T-PH-0000076P-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-30 °C to 0 °C
Temperature sensor with display unit
Absolute expanded uncertainty
:
3.0E1 mK
Comparison in liquid bath
IPRT (Hyteresis included) and thermistor sensors, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /DT
CMC ID :
APMP-T-PH-0000076N-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-30 °C to 0 °C
Liquid-in-glass thermometer
Absolute expanded uncertainty
:
4.5E1 mK
Comparison in liquid bath
Total, Mercury-filled, Graduation 0.05 °C, Points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /LIGT
CMC ID :
APMP-T-PH-0000076Q-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-30 °C to 0 °C
IPRT
Absolute expanded uncertainty
:
2.5E1 mK
Comparison in liquid bath
Hysteresis included, points only
Approved on 10 November 2015
Institute service identifier : NMLPHIL /IPRT
CMC ID :
APMP-T-PH-0000076J-1
Pressure ,
Gauge pressure: liquid medium
:
1.25 MPa to 100 MPa
Pressure gauge
Absolute expanded uncertainty
:
4.1E2 Pa to 8.3E3 Pa
1.1E-04P
8.3E-05P P, pressure in Pa
1.1E-04P but not less than 410 Pa for P : 1.25 MPa to 6.8 MPa
8.3E-05P but not less than 630 Pa for P : >6.8 to 100 MPa
Direct comparison with pressure standard
Pressure Balance
Approved on 22 August 2022
CMC ID :
APMP-M-PH-00000KIT-1
Mass ,
Mass
:
100 mg
Mass standard
Absolute expanded uncertainty
:
1.8E-2 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/5
CMC ID :
APMP-M-PH-000006DQ-1
Mass ,
Mass
:
50 mg
Mass standard
Absolute expanded uncertainty
:
1.2E-2 mg
Comparison in air
Approved on 18 December 2013
Institute service identifier : NMLPHIL/TSWT/4
CMC ID :
APMP-M-PH-000006DP-1
