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Answers to the most common questions about particle analysis and our products

  • What is the difference between IBR sample bottles "Clean", "Super Clean" and "Ultra Clean"?

    IBR sample bottles “Ultra Clean” meet the ISO 5884 and have a cleanliness according to ISO 4406 11/9/6. The suitability and control of the cleaning procedure for the sample bottles is in accordance with ISO 3722. The cleanliness degree is continuously monitored and confirmed by a certificate. A secondary contamination by the sample bottle according to ISO 5884 can be excluded.

    IBR sample bottles “Ultra Clean” are the prerequisite for an accurate oil analysis. 

    IBR sample bottles "Super Clean" have an average cleanliness according to ISO 4406 13/9/8. There is no continuous check of the cleanliness degree. The IBR sample bottles "Clean" and "Super Clean" are suitable for all types of analyses, e.g. for chemical-physical oil analyses, where an undefined cleanliness degree of the sample bottles does not severely distort the analysis result. 

    IBR sample bottles "Clean" and "Super Clean" are the clearly more affordable alternative compared to IBR sample bottles “Ultra Clean”.

  • When will IBR sample bottles "Clean", "Super Clean" and "Ultra Clean" be used?

    The desired analysis result determines the use of IBR sample bottles "Clean", "Super Clean" and “Ultra Clean”.

    For an accurate particle analysis, IBR sample bottles “Ultra Clean” according to ISO 5884 are mandatory. More information about particle analysis can be found here.

    For chemical-physical analyses, IBR sample bottles "Clean" and "Super Clean" can also be used.

    Whether oil producers, engineering companies or filter, wind turbine, construction machinery and hydraulic system manufacturers - IBR sample bottles are used in tribological tests and in all areas where an accurate analysis result is important.

  • Why are sample bottles made of high-quality glass used?

    The goal of any oil analysis is to determine the condition of the fluid used accurately and without interference.

    The advantages of glass bottles for an exact analysis:

    • The surface of glass bottles is smoother than that of plastic bottles. Very small particles cannot adhere to the surface.
    • Plastic bottles affect the result of the analysis by the electrostatic attraction and the abrasion when closing the bottles.
    • ISO 5884 requires a glass bottle.


    Further advantages of glass bottles compared to plastic bottles:

    • Glass bottles are temperature, oil, acid and alkali resistant.
    • Glass bottles are particularly easy to recycle.
  • Why are high-quality polypropylene caps with lip seals used?

    High-quality polypropylene caps with lip seal guarantee a cleanliness according to ISO 5884 after cleaning and a secure closure. In addition, they are temperature-resistant, break-resistant and have no abrasion when closing the sample bottles.

    Due to the distance between lid and insert, lids with inserts do not meet the high requirements of ISO 5884. In addition, an insert can fray and affect the analysis result.

  • When and why should an oil analysis be done?

    Contamination of the oils used can already be present in the system before installation. It can arise from the system during assembly, form during operation or be introduced from the outside into the system.

    Even fresh oils often have insufficient cleanliness. They should therefore be analysed before integration into the system to avoid contamination by filling.

    The qualitative oil analysis gives important information about the water content and the oil condition in addition to the quantitative particle analysis. 

    The oil analysis should be carried out:

    • In case of an increase of particles in order to determine the cause 
    • After the initial commissioning of systems
    • After processing components in the system
    • After repair of components in the system
    • The oil before filling into the system
    • According to the specifications of the manufacturer
    • To optimize the oil change intervals
  • What requirements must sample bottles comply with according to ISO 5884?

    ISO 5884 was developed for the aerospace industry to guarantee an accurate and replicable analysis result.

    ISO 5884 prescribes the procedure for sampling and determination of solid impurities in hydraulic fluids.

    Some criteria of ISO 5884 (shortened) for sample bottles, the cleaning process and the cleanliness are:

    Section 6: Sample bottles

    • The sample bottles must be made of glass.
    • The closure cap must be produced in a way that it cannot cause contamination

    Section 7.4: Suitability and control of the cleaning process

    • The cleaned sample bottles must be checked according to ISO 3722

    Section 9.1.1: Cleanliness of bottles according to ISO 5884

    • For 100 ml test liquid, less than 500 particles with 5?m and less than 200 particles with 10?m
  • The most common classifications for the cleanliness of oils

    The most common classifications for the cleanliness of oil are used for coding the number of particles.

    The standards use a numerical key for the degree of solid particle contamination.

    • ISO 4406, three classes: 
      >   4 µm
      >   6 µm
      > 14 µm

    • NAS 1638, five classes: 
        5 - 15 µm
      15 - 25 µm
      25 - 50 µm
      50 - 100 µm
      > 100 µm are replaced by SAE AS 4059 Aerospace Fluid Power

    • SAE AS 4059, six classes:
      A (>   4 µm)
      B (>   6 µm)
      C (> 14 µm)
      D (> 21 µm)
      E (> 38 µm)
      F (> 70 µm)
  • In which areas are the IBR sample bottles used?

    IBR sample bottles are suitable for all oil analyses in areas where an accurate, replicable result must be achieved - whether in laboratories or tribological research laboratories, for oil, hydraulic system and particle equipment manufacturers or for filter, wind turbine, aircraft and construction machinery manufacturers.