NZQA Expiring unit standard
8407 version 9
Page 1 of 3
Title
Demonstrate knowledge of miscellaneous tannages
Level
4
Credits
Purpose
8
This unit standard is for people new to the leather industry or
those wishing to develop their technical skills in leather
manufacture.
People credited with this unit standard are able to demonstrate
knowledge of: miscellaneous tanning agents used in leather
manufacture; mechanisms of miscellaneous tannages;
miscellaneous tannage practices; and miscellaneous tanned
leather characteristics.
Classification
Leather Manufacturing > Leather Manufacture Technology
Available grade
Achieved and Merit
Explanatory notes
1
Version 3 of this unit standard introduced criteria for merit. Wherever a merit
requirement appears in this unit standard it assumes that the requirements for credit
have been met.
2
Definition
THPS refers to tetrakis hydroxymethyl phosphonium sulphate.
This unit standard is
expiring
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of miscellaneous tanning agents used in leather manufacture.
Evidence requirements
1.1
Miscellaneous non-mineral tanning agents are described in terms of their
chemical structure.
Credit
Merit
1.2
two, which may include but are not limited to any of – aldehyde,
oxazolidine, THPS, syntans.
plus one other.
Miscellaneous non-chrome mineral tanning agents are described in terms of
their structure.
Range
two of the following – aluminium, titanium, zirconium.
New Zealand Industry Training Organisation
SSB Code 101541
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
8407 version 9
Page 2 of 3
Outcome 2
Demonstrate knowledge of mechanisms of miscellaneous tannages.
Evidence requirements
2.1
Mechanisms of miscellaneous tannages are described in terms of the
interaction of the reagent with the skin system.
Credit
Merit
two of the following – aldehyde, cod oil, syntan, zirconium.
plus one other.
Outcome 3
Demonstrate knowledge of miscellaneous tannage practices.
Evidence requirements
3.1
Miscellaneous tannages are described in terms of process techniques and
conditions used in the tannery.
Credit
Merit
3.2
one of – aldehyde, oxazolidine, THPS, syntan, and one of –
aluminium, titanium, zirconium.
plus one from each group.
The description identifies oil tannage process used to produce finished chamois
leather from full substance pickled sheep pelts in terms of process techniques
and conditions used in the tannery.
Outcome 4
This unit standard is
Evidence requirements
expiring
4.1
Characteristics that different miscellaneous tannages impart to finished leathers
Demonstrate knowledge of miscellaneous tanned leather characteristics.
are described and related to suitability for different purposes.
Credit
Merit
three of the following – aldehyde, oxazolidine, THPS, cod oil,
syntan, aluminium, zirconium.
plus two others.
Replacement information
This unit standard has been replaced by unit standard
27903.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
New Zealand Industry Training Organisation
SSB Code 101541
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
8407 version 9
Page 3 of 3
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
24 September 1996
31 December 2015
Revision
2
16 September 1997
31 December 2015
Review
3
27 April 2000
31 December 2015
Revision
4
20 February 2002
31 December 2015
Revision
5
14 October 2004
31 December 2015
Review
6
14 December 2007
31 December 2015
Review
7
21 February 2013
31 December 2015
Rollover
8
20 March 2015
31 December 2017
Rollover
9
17 September 2015
31 December 2018
Consent and Moderation Requirements (CMR) reference
0185
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
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.
This unit standard is
expiring
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.
New Zealand Industry Training Organisation
SSB Code 101541
 New Zealand Qualifications Authority 2016