
National Association of Testing Authorities, Australia
Scope of Accreditation
National Weighing & Instruments Pty Ltd (trading as NWI Calibration)
Site
Perth Laboratory (Precision Balances)
Accreditation No.
1960
Site No.
11714
Date of Accreditation
28 Jun 1996
Contact
Availability
Services available to external clients
Scope of Accreditation
ISO/IEC 17025 (2017)
Calibration
- The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
| Service | Product | Determinant | Technique | Procedure | Limitations | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mass - Determination of mass and calibration of weighing devices | Laboratory weighing devices; Precision laboratory balances | Mass | Gravimetric measurement against reference mass | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability Including on site calibrations | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Temperature metrology - Verification of controlled enclosures | Baths; Dry block heaters; Freezers; Furnaces; Incubators; Ovens | Spatial uniformity; Temperature; Temporal uniformity | Direct temperature measurement | In-house NWI SOP 4, SOP 91 AS 2853-1986 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability including on-site calibration | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Environmental chambers - Humidity | Humidity | By temperature and humidity measurement | In-house SOP 4 and 95 IEC 60068-3-6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability including on-site calibrationwith Calibration and Measurement Capability of - 2.0 % rh from 10 % rh to 95 % rh at the temperature of 23 ºC 2.3% rh from 10% rh to 95% rh at temperatures from 20 °C to 50 °C3.5% rh from 10% rh to 95% rh at temperatures above 50 °C to 90 °C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Environmental chambers - Temperature | Spatial uniformity; Temperature | Direct temperature measurement | In-house NWI SOP 4 and 95 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability including on-site calibrationwith Calibration and Measurement Capability of - 0.2 °C from -85 °C to 50 °C 0.6 °C above 50 °C to 200 °C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Medical refrigeration equipment | Spatial uniformity; Temperature | Direct temperature measurement | Six Monthly Tasks by AS 3864.2 section 3.6.1 and NWI SOP 12 Annual Tasks by AS 3864.2 section 3.7.1 and NWI SOP 12 Spatial Temperature distribution by method of AS 3864.2 Clause 3.8.3 and NWI SOP 4. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability Including on-site calibrationsSpatial uniformity with Calibration and measurement Capability of – 0.2°C from -85 °C to 15 °C Six-Monthly Tasks and Annual Tasks with Calibration and measurement Capability of – 0.1 ºC from -80 ºC to 15 ºC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The only data displayed is that deemed relevant and necessary for the clear description of the activities and services covered by the scope of accreditation.
Grey text appearing in a SoA is additional freetext providing further refinement or information on the data in the preceding line entry.
Accreditation No.
1960
Site No.
11714
Print date
07 Dec 2025