National Association of Testing Authorities, Australia
Scope of Accreditation
National Weighing & Instruments Pty Ltd (trading as NWI Calibration)
Site
Melbourne Laboratory
Accreditation No.
1960
Site No.
24814
Date of Accreditation
24 Apr 2020
Contact
Availability
Services available to external clients
Scope of Accreditation
ISO/IEC 17025 (2017)
- The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Calibration
| Service | Product | Determinant | Technique | Procedure | Limitations | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Mass - Determination of mass and calibration of weighing devices | Industrial mass standards | Mass | Gravimetric measurement against reference mass | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability with Calibration and Measurement Capability of -13 mg from 100 g to 2 kg 50 mg above 2 kg to 5 kg 0.16 g above 5 kg to 20 kg 12 g above 20 kg to 500 kg 20 g above 500 kg to 1000 kg | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Industrial weighing devices; Laboratory weighing devices; Precision laboratory balances | Mass | Gravimetric measurement against reference mass | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability Including on site calibrationswith Calibration and Measurement Capability of - Precision Balances 10 µg up to 1 g 13 µg above 1 g to 2 g 23 µg above 2 g to 10 g 27 µg above 10 g to 20 g 1 in 10⁶ or 44 µg (whichever is greater) above 20 g to 1.9 kg 2.1 mg above 1.9 kg to 2 kg 1.1 in 10⁶ or 2.7 mg ( whichever is greater) above 2 kg to 3 kg 1.2 in 10⁶ above 3 kg to 5 kg 2.5 in 10⁶ or 24 mg (whichever is greater) above 5 kg to 40 kg Industrial Balances 1.5 in 10⁵ or 1 mg (whichever is greater) from 1 g to 100 kg | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mass standards | Mass | Gravimetric measurement against reference mass | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Capability with Calibration and Measurement Capability of -7 µg from 1 mg to 5 mg 8 µg above 5 mg to 50 mg 9 µg above 50 mg 200 mg 10 µg above 200 mg to 500 mg 12 µg above 500 mg to 1 g 15 µg above 1 g to 2 g 30 µg above 2 g to 20 g 0.15 mg above 20 g to 200 g 2 mg above 200 g to 1000 g 3 mg above 1000 g to 2000 g 50 mg above 2000 g to 5000 g 80 mg above 5000 g to 10 000 g 0.13 g above 10 000 g to 20 000 g | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 and 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 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.
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Accreditation No.
1960
Site No.
24814
Print date
18 Dec 2025