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Quality Control (QC)

ISO 9001:2008 Certified by Bureau Veritas

For more than 28 years or excellence, Sun Siam Co., Ltd. has a strong commitment on the quality of the products. Our lubricants are produced from imported high performance additives (from USA, Germany, UK, Switzerland, and etc.) and only new high quality base oils.

We are strict about the input materials and the specifications of our finish products. Base oils are subjected to test their viscosity and properties before feeded into the storage tankers.

In the manufacturing process, before filling process of finish products, the samples are collected for laboratory test which performed by Sun Siam Co., Ltd. in-house laboratory.

(Laboratory Room1, general properties)

Examples of laboratory equipments at Sun Siam Co., Ltd. Patumthani Factory;

      -  Viscometer Bath (viscosity at 40c, 100c, VI)
      -  X-Ray Fluorescence (XRF) Spectrometer
      -  Fourier Transform Infrared (FTIR) Spectrometer
      -  Automatic Tritator (TAN, TBN, RA, and etc.)
      -  Karl Fisher Coulometer (water content, ppm to 5%)
      -  Foaming test (sequence I, II, III)
      -  Automated Particle Counter (direct imaging)
      -  Density Meter (4 digits)
      -  Crackle test
      -  Penetrometer (grease consistency)
      -  pH meter
      -  Conductivity meter
      -  Copper strip / yellow metals corrosion test
      -  Cast iron chip corrosion test
      -  Fume hoods with scrubber
      -  Magnetic stirrers
      -  Precise digital weight scales / analytical scales (4 digits)
      -  Precise oven


X-Ray Fluorescence (XRF) Spectrometer
for additives and wear metals analysis

Fourier Transform Infrared (FTIR) Spectrometer

Constant temperature baths
(4 Viscometer baths at Pathumthani factory)

Foaming test (tendency/stability of sequence I, II, III)

Copper strip corrosion test (yellow metals corrosion)

Automatic Tritator (TAN, TBN, and etc.)

Karl Fisher Coulometer (water content 1ppm to 5%)

Density Meter cell (4 digits)

pH, Conductivity probes

Penetrometer cone (grease consistency)




In some cases, additional tests might be run by other institutions

such as SGS for RoHS (Restriction of Hazardous Substances) certifications.


ISO 9001:2008 Certification (2014, 2011)

Scope: "The Design, Development, and Manufacture of Lubricants"


ISO 9001:2000 Certification (2008, 2005)

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Sun Siam Co., Ltd. [Head office] : 325, 327, 329 Soi Pattanakarn 3 , Pattanakarn Rd., Suanluang , Bangkok 10250, THAILAND.
Tel: +66 2 7198662-4, +66 2 3192609-10 Fax: +66 2 7198173, +66 2 3183382
E-mail: ,  Copyright 2005-2014 ©  SUN SIAM CO., LTD.  All Right Reserved.