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Unit of competency details

MSL974031 - Prepare, standardise and use solutions (Release 1)

Summary

Usage recommendation:
Current
Mapping:
MappingNotesDate
Supersedes and is equivalent to MSL974017 - Prepare, standardise and use solutions 19/Dec/2022

Release Status:
Current
Releases:
ReleaseRelease date
1 1 (this release) 20/Dec/2022


Classifications

SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 019909 Laboratory Technology  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 019909 Laboratory Technology  20/Dec/2022 
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Unit of competency

Modification History

Release 1. Supersedes and equivalent to MSL974017 Prepare, standardise and use solutions. Changes to Performance Criteria to remove requirements in relation to primary and secondary standards and indicators, equivalence points using indicators and graphical methods. Graphical methods removed from Foundation Skills. Superfluous terminology item removed from Knowledge Evidence and detail reduced in Assessment Conditions.

Application

This unit of competency describes the skills and knowledge to prepare, standardise and monitor the quality of solutions.

This unit of competency applies to laboratory technicians working in all industry sectors.

No licensing or certification requirements exist at the time of publication. However, regulations and/or external accreditation requirements for laboratory operations exist, so local requirements should be checked. Relevant legislation, industry standards and codes of practice within Australia must also be applied.

Pre-requisite Unit

Nil.

Competency Field

Testing

Elements and Performance Criteria

Elements 

Performance Criteria 

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare solutions

1.1 Select appropriate procedure for solution preparation

1.2 Select equipment, materials and solvent of specified purity

1.3 Measure appropriate quantities of reagents for solution preparation and record data

1.4 Select and assemble specified laboratory equipment and appropriate grade of glassware

1.5 Perform specified dilutions

1.6 Prepare solutions to achieve homogeneous mix of the specified concentration

1.7 Label and store solutions to maintain identity and stability

2. Standardise and use volumetric solutions

2.1 Assemble appropriate laboratory equipment

2.2 Standardise the solution to the required specified range and precision

2.3 Label and store solutions to maintain identity and stability

2.4 Use standard volumetric solutions to determine concentration of unknown solutions

3. Calculate and record data

3.1 Accurately calculate specified concentrations

3.2 Use authorised procedure if data is to be modified

3.3 Estimate and document uncertainty of measurement in accordance with workplace procedures

3.4 Record all relevant details in accordance with workplace procedures

3.5 Report concentration with appropriate units

4. Monitor the quality of laboratory solutions

4.1 Check solutions for visual deterioration and expiry date

4.2 Record details and label solutions in accordance with workplace procedures

5. Maintain a safe work environment

5.1 Use established safe work practices and personal protective equipment (PPE) to ensure personal safety and that of other laboratory personnel

5.2 Clean up spills using appropriate techniques to protect personnel, work area and environment

5.3 Minimise generation of waste and environmental impacts

5.4 Ensure the safe collection of laboratory and hazardous waste for subsequent disposal

5.5 Store equipment and reagents in accordance with workplace procedures

Foundation Skills

This section describes those language, literacy, numeracy and employment skills that are essential to performance.

  • Numeracy skills to:
  • select and use primary and secondary standards and indicators
  • determine equivalence points using indicators
  • calculate the concentration of the solution with appropriate units and uncertainties given the chemical reaction for the titration
  • recognise control results that are not within an acceptable range.

Other foundation skills essential to performance are explicit in the performance criteria of this unit

Unit Mapping Information

Supersedes and is equivalent to MSL974017 Prepare, standardise and use solutions.

Links

MSL Laboratory Operations Companion Volume Implementation Guide is available from VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=5c63a03b-4a6b-4ae5-9560-1e3c5f462baa

 

Assessment requirements

Modification History

Release 1. Supersedes and equivalent to MSL974017 Prepare, standardise and use solutions. Changes to Performance Criteria to remove requirements in relation to primary and secondary standards and indicators, equivalence points using indicators and graphical methods. Graphical methods removed from Foundation Skills. Superfluous terminology item removed from Knowledge Evidence and detail reduced in Assessment Conditions.

Performance Evidence

There must be evidence the candidate has completed the tasks outlined in the elements and performance criteria of this unit, and:

  • prepared and standardised at least 3 different solutions in accordance with workplace procedures.

Knowledge Evidence

There must be evidence the candidate has knowledge of:

  • chemical symbols and atomic mass
  • scientific terminology for different types of solutions
  • what affects solubility
  • formulae for calculating concentration % w/w, % w/v, % v/v, ppm (mg/L)
  • moles and molarity
  • the chemistry of acids, bases, buffers and redox reactions
  • concepts of metrology, including:
  • all measurements are estimates
  • precision, accuracy and significant figures
  • sources of error, uncertainty and repeatability
  • traceability
  • reactions used for standardisation and desirable characteristics
  • function and use of basic laboratory equipment
  • grades of glassware, reagents and their use
  • established safe work practices, including:
  • use of personal protective equipment (PPE)
  • correctly labelling reagents and hazardous materials
  • handling and storing hazardous material and equipment in accordance with labels, safety data sheets (SDS), manufacturer instructions, and workplace procedures and regulations
  • regular cleaning and/or decontamination of equipment and work areas
  • prompt clean-up of spills in accordance workplace procedures
  • awareness of environmental sustainability issues as they relate to the work task.

Assessment Conditions

Skills must have been demonstrated in the workplace or in a simulated environment that reflects workplace conditions and contingencies. The following conditions must be met for this unit:

  • use of suitable facilities, equipment and resources, including:
  • a standard laboratory equipped with appropriate reagents and equipment to prepare and standardise solutions
  • containers and storage facilities
  • workplace procedures.

Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.

Links

MSL Laboratory Operations Companion Volume Implementation Guide is available from VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=5c63a03b-4a6b-4ae5-9560-1e3c5f462baa