The purpose of this tender is to invite suitably qualified suppliers to submit proposals for the
procurement of a high-performance floor standing arc/ spark Optical Emission Spectrometer
(OES). The instrument is required at Mintek’s premises located at 200 Malibongwe Drive, Strydom
Park, Randburg.
BACKGROUND AND CONTEXT
Mintek’s Advanced Materials Discipline (AMD) at Mintek provides high-temperature research and
development services across a wide variety of commodities. The Discipline offers a wide range
of testing and demonstration services. The high-performance floor standing arc/spark optical
emission spectrometer (OES) will be a new analytical instrument for in-house chemical analysis
of prepared metal specimens from AMD’s research projects, industry, and academia. The
spectrometer will be used for research purposes and routine analysis of Ferrous and Base Metals
(C, P, Mg, Al, S, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Cd).
23. EVALUATION OF THE PROPOSAL
Tender proposals will be evaluated in accordance with the 80/20 preference point system, as
contemplated in the Preferential Procurement Regulations, 2022 pertaining to the Preferential
Procurement Policy Framework Act (PPPFA) (Act ).
24.1 Phase 1: Administrative Documents
Without limiting the generality of Mintek’s other critical requirements for this bid, a bidder(s) must
submit the documents listed in the table below. All documents must be completed and signed by
the duly authorised representative of the prospective bidder(s). A bidder’s proposal may be
disqualified for non-submission of any of the documents.
Administrative documents Tick if submitted
MTF 01: Financial Offer and Price Declaration Yes No
MTF 02: Price Yes No
MTF 03: Validity of Tender Price Yes No
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MTF 04: Form of Offer and Acceptance Yes No
MTF 05: Service Provider Declaration Form and Experience Yes No
MTF 06: Bank Details Form Yes No
SBD 6.1: Preference Points Claim Form in terms of the Preferential
Yes No
Procurement Regulations 2022
SBD 4: Bidder’s Disclosure Yes No
Central Supplier Database (CSD) Report Yes No
Joint Venture, Consortium, or Partnership agreement signed by all
Yes No
parties of agreement (if applicable)
24.2 Phase 2: Mandatory Technical
Bidder to complete the table below by indicating “yes” or “no” to confirm whether this requirement
is met and provide supporting evidence.
Supporting documentation or evidence should be attached to this document, if no evidence is
provided, it will be assumed that the specification cannot be met. The bidder’s response will be
validated against the supporting evidence to confirm the conformance of the proposed instrument
to the mandatory technical requirements.
Supporting documentation should take the form of technical specifications, datasheets, technical
drawings, brochures, etc. Supporting documents should have page numbers for ease of
reference.
BIDDER TO STATE REFERENCE
NO. COMPULSORY SPECIFICATIONS DOCUMENT & PAGE
YES OR NO
THE SPECTROMETER
The spectrometer must be a floor-
standing design i.e. should fit in a lab
1 Yes or No
room with typical laboratory door, height
and width.
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The spectrometer must have a gas filled
2 and pressure-stabilized UV optics for Yes or No
wavelength < 240 nm
The instrument must also consist of the
following:
• SIRCAL rare gas (Argon) purifier
for low levels of Nitrogen in Steel
3 and/or Oxygen in Pure copper Yes or No
applications.
• UPS (230V) 10 KVA for stable
power to the Instrument and All
accessories.
The spark OES analyser must have
different matrix calibration packages.
The analytical solution packages (ASPs)
must cover all major elements and alloy
groups. The ASPs must include full
4 element sets, calibrations, alloy groups, Yes or No
and standardisation samples. The
modules should be easily selectable and
upgradable for future expansion. An
auto selection of calibration modules is
required based on grade
The spectrometer must have full
capabilities including C, P, and S.
Should include the following pre-set
factory calibration programs optimised
5 Yes or No
for customer requirements:
Fe base: Fe-Orientation, Low Alloy
Steel, Free Cutting Steel, Cast Iron,
Carbon in nodular cast incl. Nitrogen,
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Cr-Cr/Ni Steel, Highspeed Steel, Fe-Mn
Steel and Fe-Ni-resist, Cr hard cast
Cu base: Cu-Orientation, Cu-pure,
Cu/Zn alloy, Cu/Zn/Ni alloys, Cu-
Cu/Sn/Pb alloy, Cu/Al alloy,
Cu/Be/Co/Ag alloy, Gunmetal, Cu/Ni
alloy.
Al base: Al – Orientation, Pure Al, Al-
Si/Mg – Alloys, Al-Cu- Alloys, Al-Mg-
Alloys, Al-Zn- Alloys
Zn base: Zn - Global, Primary Z and
remelted zinc, Zn/Al alloy (4%-15%),
Zn/Al (>15%), Zn/Al 2%, Zamak 2, 3, 5
The spectrometer's minimum spectral
range must be at least between 150 and
6 750 nm. Better (less than 150 and Yes or No
higher than 750) will be added
advantage
The system must include a dedicated
7 Yes or No
cooling mechanism for the electrode.
Routine maintenance without opening
8 Yes or No
instrument housing (front door)
The required consumables kit such as:
9 • Electrode tungsten/ d6.15x56/ Yes or No
double 90
MULTI-OPTIC-SYSTEM
35 CMOS detectors on the Rowland
10 Yes or No
circle with 750 mm focal length
Gas-filled and pressure-stabilised UV
11 Yes or No
optics for wavelength < 240 nm
Holographic master gratings:
12 Yes or No
3600 and 2400 grooves/mm
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Grating material: low thermal expansion
13 Yes or No
glass ceramics.
Full spectrum scan - Effective
wavelength range: 120-770 nm.
14 Yes or No
Separate optical system for
wavelengths >210 nm (Visible).
Reciprocal dispersion:
Optics 1: 3600 grooves/mm, 0.37
15 Yes or No
nm/mm. Optics 2: 2400 grooves/mm,
0.55 nm/mm
SPARK GENERATOR SOURCE
The spectrometer detector must have
very robust high-energy LDMOS
(laterally diffused metal-oxide
16 semiconductor). Fully digitalized Yes or No
plasma generator with digital discharge
definition, digital pulse generation, and
digital offline pulse control
Max. spark power 4 KW
17 Yes or No
Max. spark frequency 1000 Hz
18 Full spectrum coverage and iCAL 2.0 Yes or No
Industry-standard TCP/IP and USB
connections Integrated WebCheck tool
for instrument diagnosis. The digital
19 spark source should be matrix Yes or No
optimised with high-energy pre-
sparking to homogenise the sample
surface.
ELECTRICAL REQUIREMENTS
The instrument required should be
20 Yes or No
equipped with 198-253V, 50/60 Hz
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0.5 kVA power usage in standby mode /
21 Yes or No
maximum 1.0 kVA during spark mode
22 16 A slow-blow fuse required Yes or No
THE COMPUTER, OPERATING SYSTEM & THE SOFTWARE
The stationary metal analyzer must be
supplied with a standard computer
system monitor 22” (Minimum), Mono
Laser printer, PC stands for PC,
23 Yes or No
Monitor, and Printer. Installed with
Windows 11TM 64 Bit Professional
Operating System, keyboard, mouse,
and printer.
The computer must have an industry-
standard Intel or similar 3GHz processor
24 and 16 GB RAM. 500 GB SSD, Yes or No
Graphics adapter, USB ports, Audio
sound card, 2 Network adapters
The computer must have USB ports and
all serial connection ports to connect the
25 main instrument and other peripherals Yes or No
that are required for normal operation
and are controlled by the software.
The control software must be able to
apply spectral interference corrections
and background corrections post-
26 Yes or No
sample analysis, thus eliminating the
need to re-analyse the sample and
increase productivity.
The software must identify and record
27 Yes or No
errors to ensure that problems are
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resolved faster. The backup/restore tool
safeguards against data loss.
Be able to export results to PDF.
Possible for loading already stored
analytical results from Sample Result
Manager.
28 Possible to display the results of more Yes or No
than one sample simultaneously.
Be able to copy results to the Windows
clipboard (Data exchange to external
programs, i.e. MS Excel).
Additionally, an instrument software
must be installed with a calibration
module for Windows®. The instrument
must be equipped with an automatic
alloy/grade identification. The software
29 Yes or No
installed should cover the entire range of
applications and must be able to provide
maximum flexibility for analytical
requirements (concentration unit freely
selectable (%, ppm)).
The software should include features
such as:
• Setting of upper and lower limits
for each element for easy
process monitoring
30 • A single spark viewer and Yes or No
history chart for control samples
and standardisation. Possibility
for displaying results of more
than one sample
simultaneously. Automatic
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