18569 Demonstrate Knowledge of Depilation Chemistry and Depilatory Paint Preparation Used

Guidance Information

Legislation relevant to this unit standard includes but is not limited to – Hazardous Substances and New Organisms Act 1996, Health and Safetyat Work Act 2015, Resource Management Act 1991.

Outcomes and performance criteria

Outcome 1

Demonstrate knowledge of the mechanism of sulphide depilationused in leather manufacture.

Performance criteria

1.1The constituents of a sulphide based depilatory paint are explained in terms of their function.

1.2The chemical reaction involved in wool loosening is described in terms of using a sulphide depilatory.

Outcome 2

Demonstrate knowledge of the preparation of a sulphide depilatory paint used in leather manufacture.

Performance criteria

2.1The process used to make a sulphide depilatory paint is described in terms of equipment and procedure.

Rangeprocedure includes but is not limited to – sulphide solution preparation, paint formulation.

2.2The procedure used to control the make-up of a depilatory paint is described in terms of measurements and measuring equipment.

Outcome 3

Demonstrate knowledge of the reasons why depilatory paint formulations are varied in leather manufacture.

Performance criteria

3.1Different paint formulations are described in terms of reasons for variance.

3.2An overnight paint and aQuikpul paint are compared in terms of formulation, advantages and risks.

Status information and last date for assessment for superseded versions

This CMR can be accessed at

Please note

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Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.

Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.

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