About Chemistry Section
·
The chemistry section has facilities and expertise to carry out
chemical analysis of metals and alloys and, corrosion testing.
Standard procedures meeting international standards are adopted to
ensure maximum reliability and accuracy of test results to meet the
customers' total satisfaction. The chemical analysis of metals and
alloys by optical emission spectrometer and atomic absorption
spectrophotometer is accredited by NABL
·
Can provide expert opinion on
corrosion related failures of industrial components.
·
Can provide expert opinion on conformity to specifications and the
classification of metallic materials based on their chemical composition.
·
The Chemistry section is also involved in research in the areas of surface engineering and
corrosion. |
|
Testing Services
·
Chemical analysis by Optical Emission
Spectrometer (Iron base, copper base, aluminium base and nickel base alloys)
·
Chemical analysis by Atomic Absorption
Spectrophotometer (Elements that can be analyzed include - Ag, Al, As, Au, B, Ba, Bi, Ca,
Cd, Co, Cr, Cu, Fe, Hg, K, Mn, Mo, Na, Ni, Pb, Sb, Si, Sn, Ti, V, W and Zn)
·
Corrosion testing
by immersion test and by potentiodynamic polarization test
·
Coating thickness
measurement for metallic and organic coatings on steel
| Major Facilities ·
Multi-channel
Potentiostat (ACM Instruments, UK)
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Potentiostat/Galvanostat
(ACM Instruments, UK)
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Flat cells for
corrosion studies (Wear and Friction Tech, India)
·
Fretting
corrosion test rig (Wear and Friction Tech, India)
·
Pulse plating
rectifier (Komal Scientific, India)
·
Atomic Absorption Spectrophotometer (GBC
Avanta, Australia)
·
Optical Emission Spectrometer (Spectrolab,
Germany)
·
UV Visible Spectrophotometer (Shimadzu,
Japan)
·
Flame Photometer (Systronics, India)
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DC rectifiers
(Testronix, India)
·
High voltage
rectifiers (Aplab, India)
·
Plating cells for
electro- and electroless deposition
·
High temperature
furnaces (Lenton, USA and Vecstar, UK)
·
Photoreactor
(Heber Scientific, India) |
 |
Testing charges (Excluding
service tax)
1. Analysis by optical emission spectrometer (OES)
Testing Charges : Rs. 200/- per element; Rs. 100/- per sample for
preparation
Nominal Testing time: 2-3 working days
Sample dimension requirements for analysis using OES
| Type of sample |
Required Dimensions |
| For Square Block |
Length: 3 cm minimum; 8 cm maximum
Breadth: 3 cm minimum; 8 cm maximum
Height: should not exceed 6 cm |
| For cylindrical blocks |
Diameter: 3 cm minimum; 10 cm maximum
Height: should not exceed 6 cm |
| For Flat Plates |
Length: 3 cm minimum; 8 cm maximum
Breadth: 3 cm minimum; 8 cm maximum
Thickness: not less than 2 mm; 6 cm max. |
|
2. Analysis by
Atomic Absorption Spectrophotometer:
Testing charges: Rs. 200/- per element; (For As, Ag and Au – Rs. 500/-)
Nominal testing time: 5 working days
Sample requirements : 5 - 10 g (drillings/granular/powder)
3. Analysis of samples by other
methods and that involves microwave digestion, fusion, etc.
Testing charges: Rs. 500/- per element
Nominal testing time: 1 to 5 radicals: 8 to 12 days; 10 radicals: 14 to 20 working days
Sample requirements: 10 - 25 gm. (powder - 100 mesh)
4. Corrosion testing
Testing charges: Rs. 1000/- per sample
Nominal testing time: 6-10 days
5. Coating thickness measurement
Testing charges: Rs. 500/- per sample
Nominal testing time: 1-2 days
Note: Add service tax (current rate: 12.36%)
along with the testing charges while remitting payment.
| Mode
of payment : Advance payment in full, DD in favor of NML Unit,
Chennai |
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