Assessment Requirements for MSL973026 Prepare working solutions

Release: 1

Assessment Requirements for MSL973026 Prepare working solutions

Modification History

Release 1. Supersedes and equivalent to MSL973014 Prepare working solutions. Very minor changes to Performance Criteria. Clarification provided in Performance Evidence about what constitutes a different solution. Changes to Knowledge Evidence for clarity and to provide information about required scope and depth of knowledge required.

Performance Evidence

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

safely prepared at least 5 different correctly labelled working solutions, including calculation of the quantities involved and any dilutions required (note: the 5 different solutions may be different because of substance, concentration or method of preparation)

checked existing stocks of working solutions and identified those unfit for use.

Knowledge Evidence

There must be evidence the candidate has knowledge of:

basic measurement concepts, including repeatability, precision, accuracy and significant figures

working solutions prepared in the job role, including:

purpose

common names

chemical formulae

preparation procedures

international system of units (SI)

concentration terms, including % w/w, % w/v, % v/v, ppm (mg/L) and molarity

basic features of acids, bases, salts, buffers and neutralisation

what affects solubility

difference between aqueous and organic solutions

basic aspects of the periodic table, including:

what it is

what information it can provide and how that information can be used

symbol system

difference between elements and compounds

calculations required to prepare specified amounts of solutions of specified concentration

use of safety data sheets (SDS) and workplace procedures for preparing, handling and disposing of solutions and cleaning up spillages

environmental sustainability issues as they relate to the work task

legal, ethical and work health and safety (WHS) requirements specific 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

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